Owners, contractors, engineering companies involved in pipeline projects
- North America
- Canada
- Accent Engineering Consultants
- Access Pipeline
- Aecon construction
- AIC Trinidad
- Air products Canada
- Allseas Canada
- AltaGas
- Altex Energy
- Alton Natural Gas Storage
- Antrim Energy
- Apache Canada
- ArctiGas Resources
- ArctiGas Resources Corp
- ASL Environmental Sciences
- ATCO Group
- Athabasca
- Atlantic Gas Engineers
- Aux Sable Canada
- Banister Pipeline
- Barrick
- BC Hydro
- Black Crek Well Services
- Blackbird Energy
- BP Canada Energy
- Cacouna Energy Project
- Calvalley Petroleum
- Canada Hibernia Holding Corp (CHHC)
- Canadian Natural Ressources
- Canadian Superior Energy
- Canatec
- Cartier Pipeline and Company,(Cartier)
- Cenovus Energy Inc.
- Chesapeake Gold Corp.
- Chinook Energy Inc
- Colt Engineering
- Colt KBR
- ConocoPhillips Canada
- Corridor Resources
- Cuervo Resources
- Devon Canada Corporation
- Diamond Works
- Dover Petroleum (DP)
- Eaglewood Energy Inc.
- Emera
- Enbridge
- Enbridge Bakken Pipeline Company Inc.
- Enbridge Gas Distribution
- Enbridge Income Fund
- Enbridge Pipelines (Athabasca)
- Enbridge Pipelines (Westspur)
- EnCana Corporation
- EnCana Ekwan Pipeline
- Enhance Energy
- EOG Resources Canada
- Epsilon Energy Ltd
- Exile Resources
- ExxonMobil Canada
- FCCL Partnership.
- Foothills Pipe Lines
- Fort Chicago Energy Partners
- Fort Hills Energy
- Fortis
- Galveston LNG
- Gaz M?tro
- Gaz Metropolitain
- Gazoduq
- Geoglobal Resources
- Gibson Energy
- Golder Associates(Canada)
- Heartland Pipeline GP
- Heritage Gas
- Hibernia Management and Development Company Ltd. (HMDC)
- Husky Energy
- Husky Oil Operations (HOOL)
- Imperial Oil Resources (IMO)
- IMV Projects Atlantic
- Inter Pipeline
- KERN Energy Partners Fund (KEP)
- Keyera
- Keystone Pipeline partnerships
- Kinder Morgan Canada (formerly Terasen Pipelines)
- Kitimat Clean
- Kitimat LNG
- Kitsault Energy
- Ledcor Pipeline (LPL)
- Louisbourg Pipelines
- Mackenzie Delta Producers Group
- Mackenzie Valley Aboriginal Pipeline
- Macro Industries Inc.
- Maple LNG
- Maritimes & Northeast Pipeline (M&NP)
- MEG Energy
- Michels Canada Co.
- Midwest
- Morgan Stanley
- Nalcor Energy Oil & Gas
- New Millenium Iron (NML)
- Nexen
- North American Construction (NACG)
- North American Energy Partners (NAEP)
- North American Pipeline Inc.
- NOVA Gas Transmission (NGTL)
- NovaGold
- Oceanic Iron Ore
- OPTI Canada
- Oryx Petroleum
- Pacific Northern Gas (PNG)
- Pacific Trail Pipelines Limited Partnership
- PanCanadian Petroleum (became EnCana)
- Pembina
- Pennant Energy
- Petro Kazakhstan
- Petro Rubiales Energy Corp
- Petro-Canada
- Plains Midstream
- Provident Energy
- R.B. Somerville
- RMP
- Royal Petroleum Corporation
- SaskEnergy
- Scotia Capital
- Seabridge Gold
- SemCAMS
- Shell Canada
- SNC Lavalin Group
- Somerville Co.
- Spectra Energy Transmission West
- Starks Gas Storage, L.L.C.;
- Steel Reef
- Steelhead LNG
- Storm Ventures International Inc
- Suncor Energy
- Sunstone Projects
- Synergas Technologies Inc.
- Talisman Energy
- Taylor NGL
- TC Energy
- Techint E&C Inc.
- Technip Canada
- Teck
- Telvent
- Terasen Gas
- Terasen group
- Terasen International
- Tidewater
- Trans Africa Pipeline (TAP)
- Trans Mountain Pipe Line
- Trans Qu?bec & Maritimes Pipeline
- Trans-Northern (TNPI)
- TransAlta
- TransCanada Alaska Midstream
- TransCanada Keystone Pipeline
- TransGas
- Trow Consulting Engineers
- Ultramar
- Union Gas
- UTS Energy Corp
- Vancouver Airport Fuel Facilities Corporation (VAFFC)
- Vantage Pipeline Canada Inc.
- Vaughan Engineering
- VECO Canada
- Veresen
- Waschuk Pipe Line Construction Limited
- Westcoast Energy
- Willbros Canada
- Willbros Midwest Pipeline Construction (Canada)
- USA
- 3Bear Energy
- A&L Underground
- AB Resources
- Abercrombie Pipeline Services
- Acadian Gas LLC
- Acadian Gas Pipeline
- Access Midstream Partners
- Ace Pipeline
- Advanced Pipeline Service Inc
- Advantage Pipeline
- AECOM
- AES Corporation
- AES Ocean Express
- AGL Resources
- AIG Highstar Capital
- Air Products and Chemicals
- Alaska Continental Pipeline
- Alaska Gasline Development Corporation
- Alaska Gasline Port Authority (AGPA)
- Alaska Natural Gas Transportation System (ANGTS)
- Alcoa
- Alex E. Paris Contracting Co.
- Algonquin Gas Transmission
- Alinda Capital Partners LLC
- Alliance Pipeline
- Alliance Wood Group Engineering
- Alliant Energy
- Alpha Oil & Gas Services
- Alta Mesa Resources
- Amberjack Pipeline
- AMBO
- Amec Paragon
- Amerada Hess
- Ameren
- American Energy Partners
- American Midstream
- Anadarko Energy Services
- Anadarko Petroleum
- Andeavor Logistics
- ANR Pipeline
- Anschutz Overseas Corp
- Antero Resources
- AntOro Resources
- Apache
- Apex Pipeline Services
- APICO
- Appalachian Pipeline Contractors
- Applied Consultants
- Aqua America
- Aquila
- Aquila Gas Pipeline
- ARB
- ARB Midstream
- ArcLight
- Arctic Resources (ARC)
- Arizona Clean Fuels Yuma
- Arizona Natural Gas Storage LLC (ANGS)
- Arizona Pipeline
- ARK Engineering
- Arlington Storage
- Arrecefe Management
- Aspen Pipeline
- ASRC Energy Services
- Associated Pipe Line Contractors
- ATI Petroleum
- Atlanta Gas and Light
- Atlas Pipeline Mid-Continent
- Atlas Pipeline Partners
- Atmos Energy
- Atmos Pipeline & Storage
- ATP Oil & Gas Corporation (ATP)
- Avista
- Azure Midstream
- B Miller Excavating
- Babcock Eagleton
- Bakken Oil Express
- BakkenLink
- Baltimore Gas and Electric (BGE)
- Banister Pipeline Construction
- Bank Information Center
- Barnard Construction
- Barnard Pipeline
- Bay Gas Storage
- Bay Ltd
- BE&K
- Bear Energy
- Bear Tracker Energy (BTE)
- Bechtel
- Beowulf Energy
- Berkshire Hathaway
- Berkshire Hathaway Energy
- BGE (Baltimore Gas & Electric)
- Bi-Con Services
- Big Inch Fabricators
- Big Warrior
- Bison Pipeline LLC
- Black Bear Midstream
- Black Hills
- Blue Flame Pipeline
- Blue Racer Midstream
- Blueknight Energy Partners
- Bluestone Pipeline Co (or Bluestone Gathering)
- Bluewater Industries
- Boan Contracting
- Boardwalk Pipelines
- Boots Smith
- Bottom Line Services
- BP Alaska LNG
- BP America
- BP Pipelines (North America)
- BPZ Energy
- Bracewell & Giuliani LLP (Houston office)
- Bracewell & Giuliani LLP (San Antonio office)
- Bradwood Landing
- Brazos Midstream
- BRB Contractors
- Bridger Pipeline LLC
- Bristol Environmental and Engineering Services
- Bruce Allen Pipeline Contractor
- Buckeye Partners
- Buckeye Pipe Line
- Buckhorn
- Bulk Oil Offshore Transfer System (BOOTS)
- Burlington Ressources
- C.J. Hughes
- Cabot Oil & Gas Corporation
- Cadeville Gas Storage LLC
- Cadiz
- Cadwalader, Wickersham & Taft
- Caelus Energy
- Caiman Eastern Midstream
- Caiman Energy
- Cal Dive International, Inc.
- Calais Pipeline Company, LLC
- CalEnergy Gas (Australia)
- Calhoun LNG
- Caliber Midstream
- California American Water (Cal-Am)
- Calnev Pipeline
- Calypso U.S. Pipeline
- Cameron Interstate Pipeline
- Can-Fed Construction
- Canyon Midstream
- Cardinal Gas Storage Partners
- Cardinal Midstream
- Cardinal Pipeline Company
- Carl Smith Pipeline
- Carnian Energy
- Cascade Natural Gas
- Castleton Commodities International (CCI)
- CBC Pipeline
- Cedar Ridge
- CenterPoint Energy
- CenterPoint Energy Field Services, Inc. (CEFS)
- Central New York Oil and Gas (CNYOG)
- Central Valley Gas Storage
- Centurion Pipeline
- CH2M Hill
- Chaparral Pipeline
- Cheniere
- Chesapeake Energy
- Chesapeake Energy Marketing
- Chesapeake Utilities
- Chevron
- Chevron Pipe Line Company
- Chevron USA
- Cheyenne Plains Gas Pipeline
- Chief Gathering LLC
- Chief Oil & Gas LLC
- Chroma Energy
- CHS
- Citigroup
- Citizens Gas & Coke Utility
- City of Aurora, Colorado
- City of Huntington Beach
- City of Presidio (Texas)
- City of Wichita (Kansas)
- Clarksville Gas & Water Department (CGW)
- Clean Gas
- Clough, Harbour & Associates (CHA)
- CMS Energy
- Cogent Midstream
- Colbran Valley Gas Gathering LLC (CVGG)
- Collins Pipeline
- Colonial Pipeline
- Colorado Interstate Gas (CIG)
- Columbia Gas of Ohio
- Columbia Pipeline Group
- Compass Pass Pipeline
- Concho Resources
- Conduit Capital Partners, LLC
- ConocoPhillips
- ConocoPhillips Alaska LNG
- CONSOL Energy
- Consolidated Edison
- Consumers Energy
- Contango Oil & Gas
- Cook Inlet Region (CIRI)
- Copano Energy
- Coronado Energy
- Coronado Pipeline Company
- Costar Midstream
- CountryMark
- Cowboy Pipeline
- Crestwood Midstream
- Crimson Midstream
- Cronus Technology, Inc. (CTI)
- Cross Timbers Oil (XTO Energy Inc.)
- CrossCountry Energy
- Crystal Energy
- Dallas Water Utilities
- Dart Energy Corp
- Dart Oil and Gas
- DCP Midstream
- Deep Flex
- Deep Gulf Energy (DGE)
- Dekalb-Cherokee Counties Gas District
- Delta Gulf
- Denali - The Alaska Gas Pipeline
- Denbury Resources (DNR)
- DEnergy
- Department of Energy Washington DC
- Desert Crossing Gas Storage and Transportation System
- Destin Pipeline
- Devon Energy (DVN)
- Devon Gas Services
- Diamond K Corporation
- Discovery Gas Transmission
- Discovery Natural Resources
- Discovery Producer Services
- Discovery System
- Distrigas of Massachusetts (DOMAC)
- DKRW Energy
- Dominion
- Dominion Carolina Gas Transmission
- Dominion Exploration & Production
- Dominion Transmission
- Doris
- Double Eagle Pipeline LLC
- Dow Chemical
- Downeast LNG
- Downeast Pipeline
- Driver Pipeline
- DRKW Energy
- DTE Energy
- DUCO Inc.
- Duke Energy
- Duke Energy Field Services
- Duke Energy Gas Transmission (DEGT)
- Duncan Energy Partners
- Dynegy Midstream Services
- Eagle Ford Gathering (EFG)
- Eagle Ford Midstream (EFM)
- Eagle LNG
- Eagle Rock Energy Partners
- EagleClaw Midstream
- Earth Energy & Environment
- East Bay Municipal Utility District (EBMUD)
- East Cheyenne Gas Storage, LLC
- East Resources, Inc.
- East Tennessee Natural Gas
- Eastern Shore Natural Gas Company (ESNG)
- ECI (Engineers Construction)
- Ecology and Environment (E & E)
- EGPI Firecreek
- El Paso Blue Atlantic US
- El Paso Corporation
- El Paso Eastern Pipeline Group
- El Paso Energy International
- El Paso Midstream Group
- El Paso Natural Gas Company
- El Paso Pipeline Partners
- Elba Express Company
- EM Energy Pipeline Pennsylvania
- Emats.
- EmKey Gathering LLC
- Empire District Electric Company
- Empire Pipeline Inc.
- Empire State Pipeline and Empire Pipeline
- EMS Pipeline
- EN Engineering
- Enable Gas Transmission
- Enable Midstream Partners
- Enbridge Energy Management
- Enbridge Energy Partners
- Enbridge Offshore Pipelines
- Enbridge Pipelines LLC (USA)
- Enbridge US
- EnCana Gulf of Mexico
- EnCana Oil & Gas (USA)
- Endeavour International (OER)
- Endymion Pipeline Company
- Energia Cura
- Energy & Minerals Group (EMG)
- Energy Corporation of America (ECA)
- Energy Resource Technology (ERT)
- Energy Services South
- Energy Transfer
- Energy Transfer Fuel
- EnergySouth Midstream
- ENglobal Corporation
- ENGlobal Engineering
- Enhanced Oil Resources
- ENI US
- EnLink Midstream
- ENMWUA (Eastern New Mexico Water Utility Authority)
- Enogen
- Enogex
- Enstar Natural Gas
- Entegra Gas Pipeline
- Enterprise Products
- Enterprise Texas Pipeline
- Entrega Gas Pipeline
- EOG Resources
- EPED B Company
- EPED Holding Company
- EPIC
- EQT
- EQT Midstream
- Equilon Pipeline
- Equitable Resources
- Equitrans
- ETC Tiger Pipeline Company
- Eureka Hunter Pipeline
- Eversource Energy
- EVX
- EXCEL Midstream
- Excelerate Energy
- Exim Bank
- Explorer Pipeline
- Exterran
- ExxonMobil
- ExxonMobil Alaska LNG
- ExxonMobil Chemical
- ExxonMobil Middle East Gas Marketing
- ExxonMobil Middle East Gas Marketing Limited
- ExxonMobil Pipeline
- F-W oil Exploration
- F-W Oil Interests
- Fairbanks Pipeline Company
- Fairway Energy
- Falcon Gas Storage
- Far East Energy
- Fayetteville Express Pipeline
- Felix Energy
- Ferguson Construction Company
- Fidelity Exploration & Production
- Fieldwood Energy
- Firecreek Petroleum
- First Reserve (FRIEF)
- Flint Hills Resources
- Florida Gas Transmission (FGT)
- Florida Gas Transmission Company (FGT)
- Florida Power & Light (FPL)
- Floridian Natural Gas Storage Company (FGS)
- Fluor Corporation
- Fluor Daniel
- Fluor Energy & Chemicals business group.
- FMC Technologies
- Foltz Welding
- Forest Oil Corporation (FST)
- Fort Union Gas Gathering,
- Foster Wheeler Upstream
- Freebird Gas Storage
- Freeport LNG Development
- Freeport-McMoRan Energy
- Front Range Pipeline
- Frontier
- FSI Energy
- FX Energy
- Gabe's Construction
- Garney Construction
- Gas Transmission Northwest (GTN System)
- Gateway Pipeline
- Gavilon Midstream
- GE Commercial Finance
- GE Energy
- GE Energy Financial Services
- GE Oil & Gas
- Gemini Midstream
- Genesis Energy
- Georgia Power
- Geosouthern Operating II
- Gill Ranch Storage
- Global Industries
- Global Industries Offshore
- Global LNG
- Global Offshore International (GOIL)
- Global Offshore International L.L.C.
- Global Partners LP
- Global Petroleum and Energy Group
- Global Pipeline Partners (GPP)
- Golden Pass
- Golden Triangle Storage
- Golden Valley Electric Association (GVEA)
- Golder Associates (USA)
- Goodnight Midstream
- Govind Development
- Granherne
- Great Basin Energy Development
- Greater Minnesota Synergy, Inc., (GMS)
- Greater Minnesota Transmission (GMT)
- Greenbrier Pipeline
- Greencore Pipeline Company
- Greenfield Energy Centre
- GreenHunter Resources
- Gregory & Cook Construction
- Guardian Pipeline
- GUEU Consortium
- Gulf Coast Connector
- Gulf Coast Partners
- Gulf Crossing Pipeline
- Gulf Interstate Engineering (GIE)
- Gulf South
- Gulf United Energy (GLFE)
- Gulfport Energy Corp
- Gulfstream Natural Gas System
- GulfTerra Energy Partners
- H&S Constructors
- H.C. Price
- Hackberry LNG Terminal
- Halcon
- Halliburton
- Harpole Construction
- Harvest Pipeline
- Heartland gas Pipeline
- Helix Energy Solutions (Helix)
- Henkels & McCoy
- Hess Corporation
- Hess Energy Marketing
- Hiland Crude
- Hiland Partners
- Hilcorp Energy Company
- Holland Engineering
- Holloman
- Holly Corporation
- Holly Energy Partners
- Horizon Marine Construction
- Horizon Offshore
- Horizon Offshore Contractors
- Houston Pipe Line Company
- Howard Energy Partners (HEP)
- Hunt Oil
- Hydro Gulf of Mexico
- ICON Midstream
- Indianhead Pipeline Services
- Inergy
- Inergy Midstream
- InfraSource
- Ingleside Energy Center
- Insituform Technologies
- Intec Engineering
- Intecsea Engineering
- Intecsea, Inc., USA
- Inter-American Development Bank
- InterCon Construcion
- InterOil
- Interstate Power & Light
- IPS Engineering
- Ironwood Midstream
- Iroquois Gas Transmission System
- Iroquois Pipeline Operating
- Islander East Pipeline Company
- Isramco Inc.
- ITC Pipeline Company
- J Wood Contracting
- J. Ray McDermott
- J7 Contractors
- Jacobs Engineering
- JoMax Construction
- JP Energy
- JP Energy Partners
- Jupiter
- Kaiser-Frontier
- KBR
- Kennebec Valley Gas
- Kern River Gas Transmission
- Kerr-McGee
- KeySpan Corp.
- KeySpan Energy Delivery
- Kinder Morgan
- Kinder Morgan CO2
- Kinder Morgan Interstate Gas Transmission
- Kinder Morgan Louisiana Pipeline (KMLP)
- Kinley construction
- Klickitat PUD
- Koch Pipeline Company
- Kosmos Energy
- KS Energy Sevices
- L.A. Pipeline Construction Co
- Lake Charles Express (LCE)
- Lakehead Pipeline Partners
- Laney Directional Drilling
- Laredo Energy
- Laser Northeast Gathering Company
- Laser Northeast Gathering LLC.
- Latex Construction
- Laurel Mountain Midstream
- Leaf River Energy Center
- Leder One Energy LLC
- Liberty Gas Storage
- Liberty Utilities
- Linde Corporation
- LLOG Deepwater Development
- LLOG Exploration Offshore
- Loews Corporation
- Lone Star
- Lonestar Midstream
- Louis Dreyfus Highbridge Energy, LLC
- Louis Dreyfus Pipeline
- Lower Valley Energy
- LS Power
- M2 Midstream
- M3 Midstream (?Momentum?)
- Magellan Midstream Partners
- Magellan Midstream Pipeline
- Magnum Energy
- Magnum Gas Storage
- Magnum Hunter Resources Corporation
- Maine Natural Gas
- Major Pipeline
- Malcolm Pirnie
- Mapstone Financial Group
- Marathon Oil Corporation
- Marathon Petroleum Corporation (MPC)
- Marathon Pipe Line
- Mardi Gras Transportation System
- Mariner Energy
- MarkWest Energy
- MarkWest Liberty Midstream & Resourses
- MarkWest Pioneer
- Marubeni Offshore Production (USA)
- MasTec
- McDermott International
- McMoRan Exploration
- MCN Energy
- MCS Kenny
- MDU Resources
- Medallion Midstream
- MEHC Alaska Gas Transmission (MAGTC)
- Mentor Subsea Technology Services
- Merchant Energy Partners, LLC
- Meridien Energy
- Meritage Midstream Services
- MG Dyess
- Michael Baker Corporation
- MichCon Storage & Transportation Services
- Michels Corporation
- Michels Pipeline Construction
- Michigan Consolidated Gas (MichCon)
- Mid-America Pipeline Company (MAPL)
- Mid-Atlantic Express, LLC
- Mid-Ohio Pipeline Services
- Midcoast Energy
- Midcontinent Express Pipeline (MEP)
- Midwest Underground Inc.
- Midwest Underground Technology
- Midwestern Contractors
- Midwestern Gas Transmission
- Millennium Pipeline Company
- Miller Energy Resources
- Miller Pipeline Corporation
- Milwaukee Metropolitan Sewerage District (MMSD)
- Minnesota Ltd.
- Minnesota Pipe Line Company
- Mirage Energy
- Mississippi Hub
- MoBay storage Hub
- Monarch
- Montana-Dakota Utilities
- Monterra Energy
- Mountain Gathering
- Mountaineer Gas
- Mountaineer Keystone
- MPG Pipelines Contractors
- MPLX
- MSi Kenny
- Murphy Bros.
- Murphy Oil
- NAmerico
- Napp-Grecco
- National Fuel Gas
- National Fuel Gas Supply
- Natural Gas Pipeline Company of America (NGPL)
- Navigator
- Navitas
- Nebraska Resources Company (NRC),
- Neptune LNG
- NET Mexico Pipeline
- Net Midstream
- New Jersey Natural Gas (NJNG)
- New Jersey Resources (NJR)
- Newfield Exploration Company
- Newpek LLC
- Nexant
- NextDecade
- NextEra
- NGL Energy Partners
- NGS Energy
- Nicor
- NIPSCO (Northern Indiana Public Service Company)
- NiSource
- NiSource Midstream
- NJR Pipeline Company
- Noble Energy
- Noble Midstream
- North Baja Pipeline
- North Coast Gas Transmission
- North Dakota Pipeline Company (NDPC)
- North Star Energy
- North Texas Municipal Water District (NTMWD)
- Northern Border Pipeline Co
- Northern Natural Gas
- Northern Route Gas Pipeline Corporation
- Northern Star Natural Gas
- NorthStar Midstream
- Northwest Innovation Works
- Northwest Pipeline
- NorthWestern Energy
- Nova Chemicals Corporation
- NRG Energy
- Nuevo Midstream
- NUI
- NuStar
- Nuverra Environmental Solutions
- NW Natural
- NYSEG (New York State Electric and Gas Corporation)
- Oasis Petroleum
- Occidental of Elk Hills Inc
- Occidental Oil and Gas
- Occidental Permian
- Occidental Petroleum (OXY)
- OGE Energy
- Oiltanking Holding Americas
- Okaloosa Gas
- Okemah Construction
- Oneok Partners
- OPE
- Orbit Gas Storage
- Oregon LNG
- Oregon Pipeline Company
- Oryx Midstream Services
- Otis Eastern Services
- Over & Under Piping Contractors
- Overland Pass Pipeline Company
- Overseas Private Investment Corporation (OPIC)
- Overthrust
- Ozark Gas Transmission
- Pacific Energy Partners
- Pacific Star Energy
- Pacific Tank & Pipeline
- Pacific Texas Pipeline
- Paiute
- Palomar Gas Transmission
- Panhandle Eastern Pipe Line Company
- Panhandle Energy
- Paradigm Energy
- Paragon Engineering Services
- Parnon Gathering
- Parnon Holding
- Parsons E&C
- Paso Norte Pipeline Group
- Patterson & Wilder Construction
- Pearl Crossing Pipeline
- Pegasus International
- Penn Virginia Resource Partners
- Pennant Midstream
- PennEast
- Pentex Alaska Natural Gas Company
- Peoples Gas
- Peregrine Midstream Partners LLC
- Permico Energia
- Pete Gould & Sons
- Petrobras America (PAI)
- Petrohawk Energy Corporation
- PG&E (Pacific Gas and Electric Company)
- Phenix Pipeline USA
- Phillips 66
- Phillips and Jordan
- Piedmont Natural Gas
- Pilgrim Pipeline
- Pine Prairie Energy Center
- Pioneer Natural Resources
- Pipe Line Constructors
- Pipeline Systems Incorporated (PSI)
- Pirtle Energy Services
- Plains All American Pipeline (PAA)
- Plains Pipeline
- Plains Resources (PLX)
- Plantation Pipe Line
- PNM Energy
- POET Ethanol Products
- Point Comfort Pipeline Company
- Port Arthur Pipeline
- Port Dolphin Energy
- Poseidon Oil Pipeline
- Poseidon Water
- Poten & Partners
- Power Up
- Praxair
- Precision Pipeline
- Price Gregory International
- Primoris Services Corp.
- Progress Energy
- Progressive Pipeline
- Project Consulting Services (PCS)
- ProLiance Energy
- Prospector Pipeline
- Proteus Oil Pipeline Company
- PSEG
- PSNC Energy
- Puget sound Energy
- Pumpco
- PVR Midstream
- PVR Partners
- Q3 Contracting
- QEP Resources
- Quanta Services
- Quantum Energy Partners
- Questar Corporation
- Questar Gas Management
- Questar Overthrust PipelineCompany
- Questar Pipeline Company
- Quicksilver Resources
- Quintana
- Quoddy Bay
- R.L. Coolsaet Construction
- Radon & Ishizumi
- Range Resources
- Rangeland Energy
- Red Lake Gas Storage
- Regency Energy
- Regency Gas Services
- Regency Interstate Gas
- Reliance Eagleford Upstream Holding
- Rendezvous Gas Services Company
- Resource Environmental Solutions LLC (RES)
- RH energytrans
- Rice Energy
- Rimrock Midstream
- Ritter Construction
- Rockford Corp.
- Rockies Express Pipeline
- Rocky Mountain Pipeline System
- Rodenberg Diversified LLC
- Rose Rock Midstream
- Rosetta Resources Inc.
- Ross, Marsh & Foster
- Ryckman Creek Resources
- S J Louisnstruction of Texas
- Saddle Butte Pipeline
- Saipem America
- Salt Creek Midstream
- San Jacinto River Authority (SJRA)
- San Mateo Midstream
- San Patricio Pipeline
- Sanchez Energy
- Sanpete Water Conservancy District (SWCD)
- Savage Services
- Sawgrass Storage
- SAWS (San Antonio Water System)
- SCG Pipeline
- Schmid Pipeline Construction
- SDG&E (San Diego Gas & Electric)
- SeaCoast Gas Transmission LLC
- Seaway
- Select Energy Services
- SEMCO Gas
- SemCrude Pipeline
- SemGroup
- Seminole Energy Services, LLC
- Sempra Energy
- Sempra Pipelines & Storage
- Sempra U.S. Gas & Power
- SG Interests
- SG Resources Mississippi
- SGR Holdings
- Shaw Group Inc.
- Sheehan Pipe Line Construction
- Shell Gas Transmission
- Shell Gulf of Mexico
- Shell Offshore Inc.
- Shell Oil
- Shell Pipeline Company
- Sierra Pacific Power Company
- Silver Creek Midstream
- Sinclair Oil
- Skanska USA
- Sky Petroleum, Inc.
- Slaterdome
- Small Ventures USA
- Snelson Cos
- SoCalGas (Southern California Gas Company)
- Somerset Gas Transmission
- Sonora Pipeline
- Sonora Terminal and Pipeline Company
- South Jersey Gas
- South Jersey Industries (SJI)
- Southcross Energy
- Southeast Keathley Canyon Pipeline Co. (SEKCO)
- Southern Company
- Southern Natural Gas
- Southern Pipeline Construction
- Southern Star
- Southern Union
- Southwest Gas
- Southwest Pipeline Contractor
- Southwestern Energy Company
- Spectra Energy
- Spire
- Sprint Pipeline Services LP
- St Lawrence Gas Company (Enbridge)
- St Louis Natural Gas Pipeline
- ST Pipeline
- St. Lawrence Gas
- Stakeholder Midstream
- Statoil Gulf of Mexico
- Statoil Natural Gas
- Sterling Construction
- Sterling Energy
- Stingray Pipeline Company
- Stonehenge
- Strike Construction
- Subsea 7 Inc. (USA)
- SUEZ Energy North America (SENA)
- Suez LNG
- Summit Midstream Partners
- Summit Natural Gas of Maine
- Sun Pipeline CO
- SunCoast Energy Corporation
- Sunland Construction
- Sunoco Logistics Partners
- Sunoco Pipeline
- Superior Appalachian Pipeline Company
- Superior Oil and Gas
- Superior Pipeline Company
- Supply Corporation
- Sutherland Weston Marketing Communications
- Swift Energy Company
- SWN Southwestern Energy
- Syntroleum
- Talen Energy
- Tall Oak Midstream
- Tallgrass Energy
- Tanner Construction
- Targa Resources
- Tarrant Regional Water District
- TD Williamson
- Technip Offshore (Houston)
- Technip USA
- TECO Energy Inc.
- Tellepsen Industrial
- Tellurian
- Tenaska
- Tennessee Gas Pipeline
- Tennessee Pipeline Construction
- Teppco O/S Port System
- Teppco Partners
- Texaco
- Texas Eastern Transmission
- Texas Gas Transmission (TGT)
- TexStar
- The Alaska Natural Gas Development Authority (ANGDA)
- The Los Angeles Department of Water and Power
- The Peoples Gas Light and Coke
- The Public Service Commission of Wisconsin
- Tidelands Oil & Gas Corp
- Tioga Pipeline Company
- Tomahawk Pipeline Construction
- Torch Offshore
- Toreador Resources Corporation
- Total E&P USA
- Total Gas & Power North America
- Total Holdings Usa, Inc.
- Trafigura
- Trans Texas Gas
- Transco (Transcontinental Gas Pipe Line)
- TransMontaigne Partners (TLP)
- Transwestern Pipeline Company
- Tres Palacios Gas Storage LLC
- Tri-Comm
- Triad Western Construction
- Triangle
- Tricor Ten Section Hub
- Trigon EPC
- Trigon-Sheehan
- Trinity CO2 LLC
- Trinity Pipeline L P
- TriStar Constructors
- Triton Gathering
- Troy Construction
- Trunkline Gas
- Tug Hill Operating
- Tuscarora Gas Transmission
- Two Rivers Pipeline & Construction
- U.S. Department of Energy
- U.S. Pipeline (USPL)
- UGI Corporation
- Ultra Resources
- UNEV Pipeline
- United LNG
- United Pipeline Systems
- United Piping Inc (UPI)
- Universal Ensco
- Unocal
- Unocal Midstream & Trade (UMT)
- URS
- US Army Corps of Engineers
- US Bureau of Reclamation (Upper Colorado Region)
- US Infrastructure (USI)
- Utah Division of Water Ressources
- Utility Line Services
- VAALCO Gabon Etame Inc.
- Valero
- Valero Energy
- Valley Energy
- Vaquero Midstream
- Veco Corporation
- Vector Pipeline
- Vector Pipeline Partnership
- Vectren Corp
- Velocity Midstream
- Venture Global LNG
- Vermont Gas
- Viking GasTransmission
- Vista del Sol Pipeline
- W&T Offshore
- Walter Oil & Gas
- Washington Gas Light
- Washington Group International
- Washington Suburban Sanitary Commission (WSSC)
- WBI Energy
- We Energies
- Weatherford International
- Weeks Marine
- Welded Construction
- WesPac Pipelines
- West Texas Gulf Pipe Line
- West Texas LPG Pipeline
- Western Frontier Pipeline
- Western Gas
- Western Refining
- WGL Holdings
- WHC
- White River Hub, LLC
- WhiteWater Midstream
- Wilco Pipelines Contractors
- Willbros
- Willbros Engineers
- Willbros RPI
- Williams
- Williams Gas Pipeline
- Williams Midstream
- Williams Ohio Valley Midstream
- Williams Partners
- Williston Basin Interstate Pipeline
- Winkler Services
- Wolf Midstream Partners
- Wolverine Pipe Line
- Wood Group
- Wood Group Mustang
- World Bank
- Wyatt Construction Company, Inc.
- Wyco Development
- Wyoming Interstate Company (WIC)
- Wyoming Natural Gas Pipeline Authority (WNGPA)
- Xcel Energy
- XcL
- XTO Energy
- Xtreem Environmental Solutions
- Yankee Gas Services Co.
- Zachry Construction
- Canada
- Latin and Central America
- Argentina
- Argentine Government
- Bridas
- Conta
- Electroingenier
- Emgasud
- Enargas
- Enarsa
- Gobierno Provincial de Salta
- IECSA
- Naci?n Fideicomisos
- Pluspetrol
- Refinor refinery
- Sipetrol
- Skanska Latin America
- Tecgas
- Techint
- Tecpetrol
- Transportadora de Gas del Norte (TGN)
- Transportadora de Gas del Sur (TGS)
- Bahamas
- Borco Intl
- Hawksbill Creek LNG
- Murphy West Africa
- Barbados
- Barbados National Oil Company Limited (BNOC)
- Bermuda
- ConocoPhillips Sabah
- Bolivia
- Conpropet
- Government of Bolivia - Ministry of Hydrocarbons and Energy
- IST
- Serpetbol
- Transredes
- YPFB Transport S.A (formerly Transredes SA)
- Brazil
- Brenco (Brazilian Renewable Energy Company)
- Camargo Correa
- Comgas
- Construcoes e Com?rcio Camargo Correa (CCCC)
- Copersucar
- CPA Trading
- Crystalsev
- El Paso Energy International do Brasil
- Ferrous
- Gasmig
- Gaspetro
- Ipiranga
- Logum
- Nova Transportadora do Nordeste (NTN)
- Nova Transportadora do Sudeste (NTS)
- Odebrecht
- Odebrecht TransPort
- Papa Terra
- Parnaiba Gas Natural
- PDET Offshore S.A
- Petrobras
- PMCC Projetos de Transporte de ?lcool S.A
- Samarco
- Shell Brasila
- Subsea 7 do Brasil
- Technip Engenharia
- TGBC (Transportadora de Gas Brasil Central)
- Transportadora Urucu-Manaus
- TSB (Transportadora Sul Brasileira de Gas)
- Uniduto
- Vale
- Chile
- Codelco
- Ecogas
- Electroandina
- ENAP (Empresa Nacional del Petr?leo)
- Colombia
- Canacol Energy
- Ecopetrol
- Ismocol
- Oleoducto Bicentenario de Colombia
- Pacific Rubiales
- PDVSA Gas (Columbia)
- Petroleros Asociados
- Promigas
- TGI Transportadora de Gas Internacional
- TransGas de Occidente
- Ecuador
- Petroecuador
- Mexico
- Arendal
- Carso Infraestructura y Construccion (CICSA)
- CFE (Comision Federal de Electricidad)
- Cia. Mexicana de Gas Natural (MGN)
- Energia Mayakan
- Fermaca
- Gasoducto del R
- Global Offshore Mexico
- Grupo Carso
- Grupo Clisa
- Grupo El Paso
- HOC Offshore
- IEnova
- Pemex
- Pemex Exploration & Production (PEP)
- Pemex-Gas y Petroqumica Bsica
- PMI
- Proxima Gas
- Sonora Pacific Mexico
- Sonora Terminal and Pipeline, S. de R.L. de C.V.
- Tamaulipas state water commission CEAT
- Tarahumara Pipeline
- Techint Mexico
- Terranova Energia
- United Pipeline de Mexico (UPM)
- Nicaragua
- Amydes
- Oleoductos Premier of Nicaragua
- Paraguay
- Petropar
- Peru
- Congas Peru
- Consorcio Terminales GMP - Oiltanking
- Edelnor
- Grana y Montero
- Kuntur Transportadora de Gas
- Peru LNG S.R.L.
- Petroperu
- Pluspetrol Peru
- ProIinversion
- ProInversion
- Transportadora de Gas del Peru (TGP)
- Puerto Rico
- Puerto Rico Electric Power Authority (PREPA)
- Puerto Rico Government
- Trinidad and Tobago
- BG Trinidad and Tobago
- BP Trinidad and Tobago (BPTT)
- Eastern Caribbean Gas Pipeline Company (ECGPC)
- Guardian Holdings
- Intra Carabbean Gas Pipeline (IGPPC)
- Intra Caribbean Pipeline Company
- National Gas Company of Trinidad and Tobago (NGC)
- Uruguay
- Ancap
- Venezuela
- PDVSA (Petroleos de Venezuela)
- PDVSA Gas (Venezuela)
- Petrocaribe
- Sinorgas
- Virgin Islands
- EastCoast Transmission and Marketing
- WAPA (Water and Power Authority)
- Argentina
- Europe
- Armenia
- Armenia Ministry of Energy
- ZAO Armrosgazprom
- Austria
- EVN
- EVN Netz
- Habau
- ILF Consulting Engineers
- Nabucco Gas Pipeline International
- OMV
- Tauerngasleitung
- Azerbaijan
- Azerbaijan International Operating (AIOC)
- Azfen
- BP Exploration (Caspian Sea)
- BP Shah Deniz Exploration
- BTC
- EBRD Office in Baku
- McDermott Caspian Contractors
- SOCAR
- South Caucasus Pipeline
- Belarus
- Gomeltransneft Druzhba
- Slavkaliy
- Belgium
- De Halve Maan
- Denys
- Distrigaz
- EXMAR
- Fluxys
- Fluxys 2
- Freshfields Bruckhaus Deringer
- Suez Energy International (SEI)
- Tractebel Engineering
- Tractebel Group
- Tractebel Industry Engineering
- Bosnia
- BH-Gas
- Bulgaria
- Bulgargaz
- Bulgarian Energy Holding
- Bulgartransgaz EAD
- Gastek BG AD
- ICGB AD
- Technoexportstroy
- Thraki
- Channel Islands
- Heritage Oil
- Kentz Corporation Limited
- Panocean
- Croatia
- Inagip
- Janaf Plc
- Plinacro
- Cyprus
- DEFA
- Czech Republic
- MERO
- NET4GAS
- RWE Transgas
- Denmark
- A.P. Moller-Maersk
- COWI Consulting
- Danish Energy Agency
- Danish Oil and Natural Gas (DONG)
- Denerco Oil
- Denerco Petroleum
- Dong Energy
- Energi E2
- Energinet
- Hovedstadsregionens Naturgas (HNG)
- Maersk Oil
- Maersk Oil & Gas
- NKT Flexibles
- Ramboll
- Texaco Denmark
- Estonia
- Eesti Gaas
- Elering
- Finland
- Baltic Connector Oy
- Fortum Oy
- Gasum
- Skanska Tekra
- YIT Building Systems
- France
- Agence Francaise de Developpement (AFD)
- Air Liquide
- Air Products
- BOURBON
- Bouygues
- Coflexip Stena Offshore
- Colas Group
- Doris Engineering
- Electricite de France (EDF)
- Engie
- Entrepose Contracting
- Eureteq
- GRTgaz
- Maurel et Prom
- Paragon Litwin (France)
- Perenco
- Ponticelli
- Safege
- SAGESS
- Saipem France
- Serimax
- Sofregaz
- Spiecapag
- Starstroi
- Stolt Offshore (France)
- Suez
- Suez Environnement
- TechnipFMC
- TIGF
- Total
- Unaoil
- Vallourec
- Veolia
- Vinci Construction Grands Projets
- Georgia
- GOGC (Georgian Oil and Gas Corporation)
- Germany
- ASM (Allseas Marine GmbH & Co. KG)
- BASF
- bayernets
- Bonatti Rohrleitungsbau
- Buna Sow Leuna Olefinverbund (BSL)
- Bunde-Etzel-Pipelinegesellschaft mbH & Co. KG
- Concord Power NORDAL
- DEA
- Dresdner Bank
- E.ON
- Etzel Pipeline (BEP)
- Europipe
- EWE ENERGIE AG
- GASCADE
- KfW (Kreditanstalt f?r Wiederaufbau)
- Linde
- Max Streicher
- Nord Stream AG
- Nord-West Oelleitung
- OCAP group - Linde AG
- OPAL NEL Transport GmbH
- Open Grid Europe
- PPS Pipeline Systems (Germany)
- PPS Pipeline Systems (UK)
- Roneg AG
- RWE
- RWE Dea
- Salzgitter Mannesmann Line Pipe
- Siemens AG
- STG-International
- Trans Europa Naturgas Pipeline
- Verbundnetz Gas AG (VNG)
- Wintershall
- Greece
- C&M Engineering
- Consolidated Contractors International Co. (CCIC)
- DEPA
- DESFA
- Greece government
- Hellenic Petroleum
- IGI Poseidon
- Prometheus Gas
- Transbalkan Pipeline Company (TBC)
- Hungary
- FGSZ Natural Gas Transmission
- MOL Hungarian Oil and Gas
- MVM (Magyar Villamos Muvek)
- Orszagos Villamostavvezetek (OVIT)
- South Stream Hungary Zrt
- Ireland
- Bord Gais Energy
- Circle Oil
- ESB International
- Fingleton White & Co.
- Gas Networks Ireland
- Irish Water
- Petroceltic
- Petroneft Resources Plc
- Shannon LNG
- Shell E&P Ireland
- Statoil Exploration (Ireland)
- Italy
- ABB Italia
- ABB Lummus Global
- Agip
- Agip Gas
- Bonatti
- Burns
- Edison
- Enel
- Enelpower
- Enereco
- ENI
- Eos Energia
- Galsi
- Ghizzoni
- Hera Trading
- Infrastrutture Trasporto Gas (ITG)
- Mediterranean Oil & Gas
- Progemisa
- Romana Costruzioni
- Saipem
- Sarpi
- Sfirz
- SICIM
- Sinergia S.R.L.
- Snam Rete Gas
- Snamprogetti
- Socotherm
- Tamoil Italia
- Techfem Quality Control
- Technip Italy
- TMPC, Transmediterranean Pipeline Company
- Total Italy
- Latvia
- Latvijas Gaze
- Liechtenstein
- Caspro Pipeline Service AG
- Lithuania
- Lietuvos Dujos
- Luxembourg
- Creos
- European Investment Bank (EIB)
- Macedonia
- GA-MA
- MER JSC Skopje
- Malta
- Enemalta
- Monaco
- Single Buoy Moorings (SBM)
- Netherlands
- 4Gas
- ABN AMRO Bank
- Allseas
- Arcadis
- BBL
- Blue Stream Pipeline Company
- Bluewater
- CB&I
- Chicago Bridge & Iron Company N.V.
- Dyas UK Limited
- EBN - Energie Beheer Nederland
- El Paso El Sauz
- Eni Gas & Power LNG Australia
- Gastransport Services (GTS)
- Gasunie
- Greenstream
- Heerema Marine Contractors
- Lummus Technology
- Nacap
- Petroplus Africa
- Royal Boskalis Westminster
- Royal Vopak
- SBM Offshore
- Sea Trucks (STG)
- Shell (Royal Dutch Shell)
- Shell Exploration and Production (Oil and Natural Gas)
- Shell Nederland
- Shell Sakhalin Holdings
- Tebodin Consultants & Engineers
- Total E&P Nederland
- Trans Balkan Pipeline
- Tulip Oil
- Visser & Smit Hanab
- Vitol
- VTTI (Vitol Tank Terminals International)
- Wintershall Noordzee
- Norway
- Agility Group
- Aker Solutions
- Amerada Hess Norge
- BP Norge
- Cecon
- ConocoPhillips Norske
- Det norske oljeselskap
- DNO ASA
- Dong Norge AS
- Emas AMC
- Eni Norge
- Equinor
- Esso Exploration and Production Norway
- Esso Norge
- Fantoft Process Technologies
- Gassco
- Gaz de France Norge
- GDF Suez E&P Norge
- H?egh LNG
- Hydro Oil & Energy (Hydro)
- IKM Gruppen AS
- Norsk Hydro ASA
- Norske Conoco
- Norske Shell
- Ocean Installer
- Petoro
- Ramboll Norway
- RWE Dea Norge
- Sevan Marine
- Shell Norge
- Skanled Group
- Stolt Offshore Norway
- Subsea 7 Norway
- Svenska Petroleum Exploration (SPAB)
- Talisman Energy Norge A.S.
- Technip Norge
- Total E&P Norge
- Total Norge
- Poland
- Gaz-System
- GAZOPROJEKT
- PBG S.A.
- Pern Przyjazn
- PGNiG SA
- PKN Orlen
- Polish Oil and Gas (POGC)
- Sarmatia consortium
- Sarmatia ICC
- STALPROFIL
- ZRUG
- ZRUG Zabrze
- Portugal
- Galp
- GALP-Explora??o e Produ?
- Petrogal
- REN (Redes Energeticas Nacionais)
- Saibos
- Romania
- Black Sea Oil & Gas (BSOG)
- Grup Servicii Petroliere
- Romgaz
- Transgaz (Romania)
- Russia
- Bumi Armada Caspian LLC.
- Caspian Pipeline Consortium (CPC)
- ChelPipe
- Chevron Neftegaz Inc.
- Daltransgaz
- East Siberian Gas Company
- Exxon Neftegaz
- ExxonMobil Russia
- Gazprom
- Gazprom Invest Vostok
- Gazprom Mezhregiongaz
- Giprovostokneft
- Imperial Energy
- Interros
- Itera
- Lukoil
- Lukoil-Neftegasstroy (LNGS)
- Lukoil-Nizhnevolzhskneft
- Mezhregiontruboprovodstroy (MRTS
- MRK-Engineering
- Novatek
- Promstroi Group
- Rosneft
- Rostec
- Rusia Petroleum
- Sakhalin Energy Investment
- Sevmorneftegaz
- Sibneft
- Sovcomflot
- Stroygazmontazh
- Stroytransgaz
- Surgutneftegaz
- Tatneft
- TNK-BP
- Transneft
- Transnefteprodukt
- TsUP VSTO
- Tyumen Oil Co.
- Vankorneft
- Verkhnechonskneftegas (VCNG)
- VNIIST Oil and Gas Engineering Company
- Vostoknefteprovod
- Yamalgasinvest
- Yukos
- Zakneftegaz-Prometery
- Zarubezhneft
- Serbia
- Naftna Industrija Srbija (NIS)
- Slavija Internacional
- Srbijagas
- Slovakia
- Bratislava - Schwechat Pipeline (BSP) company
- Euroframe
- Eustream
- Transpetrol
- Slovenia
- Petrol
- Plinovodi
- Spain
- Actividades de Construccion y Servicios (ACS )
- Cepsa
- Cobra
- Compania Espanola de Petroleos S.A (CEPSA)
- Compania Logistica de Hidrocarburos (CLH)
- Dragados Industrial
- Dragados Offshore
- Elecnor
- Enagas
- Endesa
- Endesa Gas
- Fomento de Construcciones y Contratas (FCC)
- Iberdrola
- Lloyd's Register Espa
- Naturgas Energia
- Nesco
- Repsol
- Repsol YPF
- Tecnicas Reunidas
- Union Fenosa Gas (UFG)
- Valoriza Agua
- Sweden
- Goteborg Energi
- Lundin Petroleum
- Lunds Energi
- Oresundskraft
- Skanska AB
- Sydkraft
- Switzerland
- ABB
- Addax Petroleum
- Axpo AG
- Boskalis-Tideway Offshore
- Foster Wheeler AG
- Gaznat SA
- Global Engineering and Construction Group
- KPMG
- Latsis Group
- North European Gas Pipeline Company (NEGPC)
- Shtokman Development AG
- Zeromax
- Turkey
- Botas
- Calik Energy
- Department of EU Investments
- Erciyas
- ERKO Group of Companies.
- Fernas Insaat
- GAMA Power Systems Engineering and Contracting
- Genel Energy
- Gunsayil
- Mapa Construction and Trading Co. Inc.
- STFA Construction
- SU-YAPI ENGINEERING
- Tapco Company
- Tekfen Contruction
- Trans-Anatolian Pipeline Company (TAPCO)
- Transbalkan Construction
- Turang Transit Transportation
- Turcas
- Turkey Government
- Turkish government
- Turkish Petroleum (TPAO)
- Turusgas
- Yuksel
- Zorlu Group
- Ukraine
- Gastransit
- Naftogaz Ukrainy
- Ukrgazpromstroi
- Ukrtransgas AC
- Ukrtransnafta
- Yuzhniigiprogaz
- United Kingdom
- 2Co Energy
- Afren Energy
- Amec Foster Wheeler
- Anglo American
- Antrim Ressources
- Apache North Sea
- BG Group
- BG International
- Bibby Offshore (BOL)
- BJ Process and Pipeline Services
- BOW Valley Petroleum (UK) Limited
- BP
- BP Amoco
- BP Exploration (Angola)
- BP Exploration and Production
- BP Exploration Operating Company
- BP Global Investments
- Burlington Resources Irish Sea
- Cairn Energy
- Caspian Energy Company (CEC)
- Centrica
- Centrica Energy Upstream
- Centrica Resources
- Ceona
- ConocoPhillips (UK)
- Costain
- CSL
- CTC Marine Projects
- Dana Petroleum
- Delta Oil Company
- Dominion Energy Plc
- Dyon UK
- E.ON Ruhrgas UK E&P
- Energean
- ENI UK
- ENI ULX
- ERBD
- Ernst & Young
- Esso Exploration & Production UK
- Fairfield Energy
- Firmus Energy
- Fluor (UK)
- Foster Wheeler Energy Limited (UK)
- Fugro group
- Gaffney, Cline (UK)
- Gateway Storage - Stag Energy Development Co.
- GDF Britain
- Genesis Oil and Gas Consultants
- Halcrow Group
- Independent Pipelines
- Invensys
- IPA Energy Consulting
- Iraq Petroleum Company
- Ithaca Energy
- J P Kenny
- Jee
- John Wood Group PLC
- Joseph Gallagher Ltd (JGL)
- KBR Europe
- Kvaerner E & C Uk
- Lamprell
- Land & Marine Project Engineering
- Lasmo (TNS)
- LNG Impel
- Mace Group
- Max Petroleum
- Mobil North Sea
- MOC Exploration (U.K.) Limited
- Mott MacDonald
- Murphy Petroleum
- National Grid
- Nelson Resources Limited
- Neptune Energy
- Northern Ireland Water
- Paladin Expro
- Paladin Ressources
- Parsons Brinckerhoff
- Penspen
- Petro-Canada UK
- Petrofac
- Phoenix Energy Holdings
- Pipeline Systems Engineering
- Portland Gas
- Premier Oil
- Primeline Energy Holdings
- Ramco Seven Heads
- Rift Oil
- Rio Tinto
- Roc Oil (GB) Limited
- RPS Energy
- RWE Dea UK
- Saipem UK
- Salamander Energy
- Sasol Chevron
- Senergy Survey & GeoEngineering
- Serica Energy
- Shell Expro
- Shell UK
- Sirius Minerals
- SLP Engineering Ltd
- Soco International Plc
- Solo Oil (SOLO)
- Sound Energy
- Star Energy
- Stolt Offshore (UK)
- Subsea 7
- Talisman Energy (UK)
- TAQA Bratani Limited
- Technip Offshore UK
- Tecnoconsult International (UK)
- Teknica
- Total E&P UK Plc
- Transco UK (Transcontinental Gas Pipe Line)
- TTL Engineering Consultants
- Tullow Oil
- United Utilities
- Valiant Petroleum plc
- Venture Production
- Victoria Oil and Gas
- Wessex Water
- White Stream Pipeline Company
- Xodus Group
- Zhaiykmunai
- Armenia
- Africa
- Algeria
- Agence Nationale des Barrages et Transferts (ANBT)
- BP Algeria
- Cosider
- Cosider Travaux Publics
- ENAC Etp Nationale de Canalisation
- GCB (The National Company of Civil engineering and Building)
- Groupement Berkine
- Kanaghaz
- Lead Contracting & Trading
- Minist?re des Ressources en Eau
- R?gion Transport Ouest (RTO) - Sonatrach Dept.
- Sonatrach
- Sonelgaz
- Angola
- Angola Drilling
- Angola LNG Limited
- BP Angola
- Cabinda Gulf Oil (CABGOC)
- Eni Angola Exploration
- Esso Exploration Angola
- Petrogal Angola
- Sonangol
- Sonangol Pesquisa e Producao
- Statoil Angola
- Total Angola
- Total E&P Angola
- Benin
- Societe Beninoise de Gas (SoBeGaz)
- Botswana
- Water Utilities Corporation (WUC)
- Cameroon
- Austen Maritime
- Expro Group
- Petroleum Products Pipeline SA (3PL)
- Societe Nationale des Hydrocarbures (SNH)
- Chad
- Societe des Hydrocarbures du Tchad (SHT)
- Congo Brazzaville (RD)
- Chevron Congo Overseas
- SNPC (Societe Nationale des Petroles du Congo)
- Total E&P Congo
- Zanaga Iron Ore Company
- Congo Kinshasa (RDC)
- Ministry of Oil (Minist?re des hydrocarbures)
- Egypt
- Arab Company for Oil & Gas Pipelines (ACOG)
- Arab Contractors
- Arabian Gas
- BG Egypt
- Burullus Gas
- EGAS
- Egyptian Contracting Company
- Egyptian General Petroleum (EGPC)
- ENPPI
- EPEG (Egypt)
- Natural Gas Vehicles (NGVC) Egypt
- Nile Valley Gas (NVGC)
- Orient Gas Co.
- Petrobel
- Petrojet
- Petroleum Projects & Technical Consultations (PETROJET)
- Pharaonic Petroleum
- Equatorial Guinea
- Ministry of Mines, Industry, and Energy
- Gabon
- Perenco Gabon S.A.
- Total Gabon
- Ghana
- Ghana National Gas Company (Ghana Gas)
- Ghana National Petroleum Company (GNPC)
- Volta River Authority
- WAPCo (West African Gas Pipeline Company)
- Ivory Coast
- Compagnie Ivoirienne de Production d'Electricite (CIPREL)
- Petroci
- Ranger Oil Cote d'Ivoire
- Kenya
- Kenya government - Ministry of Environment and Mineral Resources
- KPC (Kenya Pipeline Company)
- Runji & Partners
- Libya
- Azzawiya Oil Refining Company
- Brega Petroleum Marketing Company
- Jointgaz
- Mellitah Oil & Gas
- National Oil Company of Libya (NOC)
- Tamoil Libya
- Madagascar
- Ambatovy Minerals (AMSA)
- Dynatec Madagascar (DMSA)
- Mauritania
- SMH Societe Mauritanienne des Hydrocarbures
- Mauritius
- Horizon Marinenstruction (Mauritius)
- Morocco
- Metragaz
- Office Ch?rifien des Phosphates (OCP)
- Office Nationale de l'Eau Potable (ONEP)
- Onhym
- Mozambique
- Companhia Mocambicana de Hidrocarbonetos (CMH)
- ENH (Empresa Nacional de Hidrocarbonatos)
- Instituto de Gestao das Participacoes do Estado (IGEPE)
- Matola Gas Company (MGC)
- Nacala Development Corridor
- Petr?leos de Mo?ambique (Petromoc)
- Namibia
- Namcor
- NamPower
- Shell Namibia
- Niger
- Minist?re de l'Energie et du P?trole de Niger
- Nigeria
- Atlas International Engineering Services Nigeria
- Baywood Continental
- Belbop Nigeria
- Chevron Nigeria
- Dangote Group
- East Horizon Gas Company (EHGC)
- Elf Petroleum Nigeria
- Esso Exploration and Production Nigeria
- Fode
- Global Pipeline Plus Nigeria
- Global Pipelines Plus Nigeria
- KAZTEC Engineering Limited (KEL)
- Mobil Producing Nigeria
- Nestoil
- Nigeria Gas Company (NGC)
- Nigerian Agip Exploration
- Nigerian Agip Oil Company (NAOC)
- Nigerian National Petroleum (NNPC)
- Oando Energy Resources
- Oando Gas and Power
- Pan Ocean Oil Corporation
- SAPETRO (South Atlantic Petroleum)
- Septa Energy Limited
- Shell Nigeria E&P Company (SNEPCO)
- Shell Petroleum Development Company of Nigeria (SPDC)
- Technip Offshore Nigeria
- Total E&P Nigeria
- Total Upstream Nigeria Limited (TUPNI)
- West African client
- Willbros West Africa (WWAI)
- Zakhem Construction Nigeria
- South Africa
- Banque de developpement de l'Afrique australe (BRAFO)
- Basali Ba Liseli Resources
- Black Rhino
- Central Energy Fund (CEF)
- Forest Exploration International
- Foster Wheeler South Africa
- Gigajoule
- Group Five
- iGAS
- Mangaung Metropolitan Municipality
- Petro SA
- Petroline
- Petronet (South Africa)
- PetroSA
- PIC (Public Investment Corporation)
- Renergen
- ROMPCO
- SacOil
- Sappi
- Sasol (South Africa)
- Shearwater Construction
- Sunbird Energy
- Transnet
- VGI Consulting
- WBHO Construction
- South Sudan
- Government of South Sudan
- Ministry of Energy and Mining of South Sudan
- Ministry of Petroleum and Mining of South Sudan
- Sudan
- Petrodar Operating Company
- Sudanese government
- Tanzania
- Aminex
- COWI Tanzania Limited
- East African Community (EAC)
- Orca Exploration Group
- Songas
- Tanzania Petroleum Development Corporation (TPDC)
- Tanzania Ports Authority
- Tanzanian and Italian Petroleum Refining(Tiper)
- Wentworth Resources
- Togo
- Societe Togolaise de Gaz
- Tunisia
- Banque de l'Habitat (BH)
- BG Tunisia
- British Gas Tunisia Limited (BGT)
- Entreprise Tunisienne D'Activit?s P?troli?res (ETAP)
- National Sanitation Utility (ONAS)
- Sergaz
- Societe Tunisienne de l'Electricite et du Gaz (STEG)
- Sotugat (Societe Tunisienne du Gazoduc Trans-tunisien)
- Tunisian Government
- Uganda
- Madhvani International
- Shell Uganda
- Tamoil East Africa
- Uganda Government
- Zambia
- Tazama Pipeline
- Zimbabwe
- Zimbabwe government - Ministry of Power and Energy development
- Algeria
- Middle East
- Bahrain
- Bahrain Ministry of Works (MoW)
- Bahrain National Gas Company (Banagas)
- Bahrain Natural Oil & Gas Authority (NOGA)
- BAPCO (Bahrain Petroleum Company)
- Egypt
- Arab Company for Oil & Gas Pipelines (ACOG)
- Arab Contractors
- Arabian Gas
- BG Egypt
- Burullus Gas
- EGAS
- Egyptian Contracting Company
- Egyptian General Petroleum (EGPC)
- ENPPI
- EPEG (Egypt)
- Natural Gas Vehicles (NGVC) Egypt
- Nile Valley Gas (NVGC)
- Orient Gas Co.
- Petrobel
- Petrojet
- Petroleum Projects & Technical Consultations (PETROJET)
- Pharaonic Petroleum
- Iran
- Iran's Gas Transmission Company (IGTC)
- Iranian Gas Engineering and Development Co. (IGEDC)
- Iranian Gas Storage Company (IGSC)
- Iranian Offshore Engineering and Construction (IOEC)
- Iranian Oil (IOC)
- Khatam Al Anbia
- Naftiran Intertrade Company (NICO)
- National Iranian Gas Company (NIGC)
- National Iranian Gas Export Company (NIGEC)
- National Iranian Oil Company (NIOC)
- National Iranian Oil Engineering & Construction (NIOEC)
- National Petrochemical Company (NPC)
- OEIC (Oil Industries' Engineering and Construction)
- Pars Oil and Gas Company (POGC)
- Payandan
- Petroiran
- PetroIran Development Company (PEDCO)
- Petroleum Engineering and Development Company (PEDEC)
- Petropars Company
- Sunir
- Toossab
- Water Supply from Persian Gulf Company (Wasco)
- Iraq
- BOOT project companies
- Genel Enerji A.S
- INOQ (Iraqi National Oil Company)
- Iraq Petroleum Company (IPC)
- Kar Group
- Kurdish Natural Resources Ministry
- Ministry of Municipalities and Public Works of Republic of Iraq
- Ministry of Oil (Iraq)
- Missan Oil Company (MOC)
- North Oil Company
- Oil Pipelines Company (OPC)
- Qaiwan Group
- South Oil Company (SOC)
- State Company for Oil Projects (SCOP)
- Taq Taq Operatingmpany (TTOPCO)
- Israel
- Avner Oil Exploration
- Delek Energy
- Eastern Mediterranean Gas (EMG)
- Israel Electric (IEC)
- Israel Natural Gas Lines
- Ministry of National Infrastructures
- Natural Gas Pipelines Company
- Jordan
- Jordan Ministry of Energy and Mineral Resources
- Ministry of Water and Irrigation (Jordan)
- Kuwait
- ABB Engineering Technologies Company
- Al Ghanim International
- Al Khadda International
- Al-Nahar Industrial Trading & Contracting Company
- Arabi Enertech
- Burhan International Construction
- Combined Group Contracting (CGC)
- Heavy Engineering Industries & Ship build Co (Heisco)
- Heavy Engineering Industries & Shipbuilding (KSC) (HEISCO)
- Joint Operations (Kuwait Gulf Oil Co. Saudi Arabia Texaco)
- Kharafi National
- Kuwait Controls Company
- Kuwait Energy Company
- Kuwait Ministry of Electricity & Water (MEW)
- Kuwait Ministry of Energy
- Kuwait Ministry of Public Works
- Kuwait National Petroleum Company (KNPC)
- Kuwait Oil Company (KOC)
- Kuwait Petroleum Corporation (KPC)
- Mechanical Engineering & Controls Company (MECC)
- Ministry of Public Works (MPW)
- Mushrif Trading & Contracting
- Saudi Arabian Chevron
- Lebanon
- Contracting & Trading (CAT)
- Council for Development and Reconstruction (CDR)
- Ministry of Energy and Water of Lebanon
- Zakhem International
- Oman
- Al Hassan Engineering Company (AHEC)
- Al Watanyiah United Engineering & Contracting
- Al-Baraka Oilfield Services
- Galfar Engineering & Contracting
- Gulf Petrochemical Services and Trading
- Haya Water
- Minister Regional Municipalities and Environment and Water Resources
- Ministry of Regional Municipalities and Water Resources
- Ministry of Water Resources of Oman
- Occidental Mukhaizna
- Occidental of Oman
- Octal Petrochemicals LLC FZC
- Oman Construction (TOCO)
- Oman Gas Company (OGC)
- Oman Methanol Company
- Oman Ministry of Electricity and Water (MEW)
- Oman Oil Company (OOC)
- Oman Petrochemical Industries Corporation (OPIC)
- Oman Refinery (ORC)
- Oman Waste Water Service Company (OWSC)
- Orpic (Oman Oil Refineries and Petroleum Industries)
- PDO (Petroleum Development of Oman)
- Public Authority for Electricity and Water (PAEW)
- Talal al-Zawawi Enterprise
- Towell Infrastructure Projects Company LLC
- Palestinian Territories
- Palestinian Authority (PNA)
- Qatar
- AAW & Partners LLC (Oman Office)
- Black Cat
- Chevron Phillips Chemical International Qatar Holdings
- Combined Group Co. For Trading & Contracting W.L.L.
- Doha International Airport
- Doha Public Works Authority
- Laffan Refinery Co.
- Maersk Oil Qatar
- Noor Oil and Industrial Technology Limited (NOIT)
- Public Works Authority (Ashghal)
- Qatar Chemical (Q-Chem)
- Qatar Chemical Company II (Q-Chem II)
- Qatar General Electricity and Water Corporation (Kahramaa)
- Qatar Jet Fuel Company
- Qatar Kentz WLL
- Qatar Ministry of Energy and Industry
- Qatar Petrochemical Company (QAPCO)
- Qatar Petroleum (QP)
- Qatar Public Works Authority (Ashghal)
- Qatar Shell GTL
- Qatargas Operating Company
- Qatari Diar
- Qatofin Company (Q.S.C.) (Qatofin)
- QDVC
- Ras Laffan LNG Company (RASGAS)
- Rasgas
- Venessia Group
- Saudi Arabia
- Al Jehat Company (JATCO)
- Al-Rashid Trading & Contracting Company (RTCC)
- Al-Rushaid Group
- Al-Suwaih Agricultural Trading Company
- Ali Al-Qarnei Al-Razqei Contracting Co.
- Arkad
- Aziz European Pipe Company
- Dar Al Riyadh Engineering Consultants (Al Khobar)
- Dar Al-Riyadh
- Dayim Punj Lloyd Construction Contracting
- Denys Arabia
- Faysal M Qahtani Sons Company (FMQ)
- Foster Wheeler Arabia
- Gama Al - Moushegah Arabia
- Global Al Rushaid Offshorempany
- Goverment of Tabuk Region
- Gulf Consolidated Contractors
- HAK Group
- KAD Construction
- King Fahd University of Petroleum & Minerals
- KJO (Al Khafji Joint Operations)
- Kuwait Gulf Oil Company (KGOC)
- Maaden
- McDermott Arabia
- Metal Services for Trading & Contracting
- National Water Company
- Nesma & Partners Contracting
- RHM
- Royal Commission for Jubail and Yanbu (The)
- Sadara
- Saudi Arabia Ministry of Agriculture and Water
- Saudi Arabia Ministry of Electricity and Water
- Saudi Arabia Ministry of municipal and rural affairs
- Saudi Arabia Ministry of Water and Electricity
- Saudi Aramco
- Saudi Electricity Company (SEC)
- SRAK (South Rub Al-Khali Limited)
- Suedrohrbau Saudi Arabia
- SWCC
- Tamimi Company
- Valentine Maritime
- Worley Petrocon Arabia
- Syria
- EAMGCC
- Hesco
- Syrian Gas Company (SGC)
- Syrian Petroleum (SPC)
- Turkey
- Botas
- Calik Energy
- Department of EU Investments
- Erciyas
- ERKO Group of Companies.
- Fernas Insaat
- GAMA Power Systems Engineering and Contracting
- Genel Energy
- Gunsayil
- Mapa Construction and Trading Co. Inc.
- STFA Construction
- SU-YAPI ENGINEERING
- Tapco Company
- Tekfen Contruction
- Trans-Anatolian Pipeline Company (TAPCO)
- Transbalkan Construction
- Turang Transit Transportation
- Turcas
- Turkey Government
- Turkish government
- Turkish Petroleum (TPAO)
- Turusgas
- Yuksel
- Zorlu Group
- UAE
- Abu Dhabi Company for Onshore Oil Operations (ADCO)
- Abu Dhabi Future Energy Company (Masdar)
- Abu Dhabi Gas Development Company Limited
- Abu Dhabi Gas Industries (GASCO)
- Abu Dhabi Marine Operating Co. (ADMA-OPCO)
- Abu Dhabi Municipality
- Abu Dhabi National Energy Company (TAQA)
- Abu Dhabi National Oil Company (ADNOC)
- Abu Dhabi Sewerage Services Company (ADSSC)
- Abu Dhabi Water & Electricity Authority (ADWEA)
- Adnoc Distribution
- Al Huda Contracting
- Al Jaber Energy services (AJES)
- Al Khareef General Contracting & Maintenance Company
- Al Ryum Cont. & Gen. Transport Est.
- Al Wasit Road Contracting
- Albanna Engineering
- Arabtec Engineering Services
- Arabtec Holding PJSC
- Atlantis (UAQ)
- CMS International Power Company
- Costain Abu Dhabi
- Crescent Petroleum
- Dana Gas
- DEWA (Dubai Electricity and Water Authority)
- Dodsal Engineering & Construction
- Dolphin Energy (DEL)
- Dragon Oil Plc
- Dubai Municipality
- Dubai Petroleum Establishment (DPE)
- Dubai Supply Authority (DUSUP)
- Dutco McConnell Dowell
- Elixier
- Emirates General Petroleum Co. (Emarat)
- Emirates National Oil Company (Enoc)
- Emirates Petroleum Products Company (EPPCO)
- Essar Projects (EPL)
- Federal Electricity & Water Authority (FEWA)
- Fugro Survey (Middle East)
- Fujairah Refinerympany (FRCL)
- GASCO
- Gulf Petrochemical Services (GPS)
- Hamriyah Free Zone (HFZ)
- HLG (Habtoor Leighton Group)
- International Petroleum Investment Company (IPIC)
- IPTF, Fujairah, FZC
- J. Ray McDermott Middle East
- JGC Middle East FZE
- Likpin
- Lindenberg Emirates
- Maritime Industrial Services (MIS)
- Mubadala Petroleum
- National Petroleum Construction Company (NPCC)
- Nico International
- Petro Gas FZE
- RAK Petroleum
- Ras Al Khaimah Oil & Gas Commission
- Ras al-Khaimah Gas Company (Rakgas)
- Sharjah Electricity and Water Authority (Sewa)
- Sharjah Pipeline (SPC)
- Shell Trading Middle East Limited
- Stone & Webster International
- Subtec Middle East Limited (DubaiI Branch)
- Takreer Company
- Tebodin Middle East
- Topaz Energy and Marine
- Transco UAE (Abu Dhabi Transmission and Despatch Company)
- UAE Offsets Group (UOG)
- United Gas Transmissions Company (UGTC)
- Vopak Horizon Fujairah
- Zadco (Zakum Development Company)
- Zakum Development Company (ZADCO)
- Yemen
- Hawk International
- Ministry of Oil and Minerals
- Yemen Gas Company
- Yemen Liquefied Natural Gas (YLNG)
- Yemen Petroleum and Gas Company
- Yemen Petroleum Co.
- Yemen Resource Limited
- Bahrain
- Asia
- Afghanistan
- Afghan Gas Enterprise
- Azerbaijan
- Azerbaijan International Operating (AIOC)
- Azfen
- BP Exploration (Caspian Sea)
- BP Shah Deniz Exploration
- BTC
- EBRD Office in Baku
- McDermott Caspian Contractors
- SOCAR
- South Caucasus Pipeline
- Bangladesh
- Bangladesh Mineral Oil & Gas Corporation (BMOGC)
- Bangladesh Petroleum Corporation (BPC)
- Energy and Mineral Resources Division (EMRD)
- Gas Transmission (GTCL)
- Mohona Holdings
- Petrobangla
- Brunei
- Brunei National Petroleum Company
- China
- Beijing Gas Group
- Beijing Major Project Office
- China Communications Construction Company (CCCC)
- China Development Bank
- China Metallurgical Construction Group Corporation
- China National Oil and Gas Exploration and Development (CNODC).
- China Petrochemical Corporation
- China Petroleum Engineering & Construction (CPECC)
- China Petroleum Pipeline Engineering (CPPE)
- China State Construction Engineering Corporation (CSCEC)
- China United Coalbed Methane (CUCBM)
- Chinese National Oil and Gas Corporation (CNOGC)
- CNOOC (China National Offshore Oil Corp.)
- CNPC (China National Petroleum Corporation)
- ConocoPhillips China (COPC)
- CPPB (China Petroleum Pipeline Bureau)
- Datang International Power Generation
- DQE
- Economic Development Bureau of Xiamen
- GIL Mauritius Holdings
- Guangdong Dapeng LNG Company
- Guangdong Yuedian Group
- Honbridge
- HuanQiu Contracting and Engineering
- Husky Oil China
- Kunlun Energy
- MCC International Trading
- Offshore Oil Engineering Co.
- Ordos Zhongran Shi Da Gas Investment Company
- Panyu Chu Kong Steel Pipe
- Petrochina
- POLY - GCL
- PowerChina (Power Construction Corporation of China)
- Shaanxi provinces government
- Shandong Dongming Petrochemical Group
- Shell Exploration (China)
- Shenergy Group
- Shengli Engineering & Consulting (SLECC)
- Sichuan Petroleum Construction Engineering Corporation
- Sinochem Corporation
- Sinohydro
- Sinopec
- Sinopec International
- Tian Lun Group
- Trans-Asia Gas Pipeline Company
- Xinwen Mining Group
- Yanchang Petroleum
- Yantai Jereh
- Hong Kong
- Castle Peak Power Company Limited
- China Gas
- China Light and Power Holdings
- CLP Holdings
- Hongkong Electric Company (HEC)
- Yangkou Port Company
- India
- Adani Gas
- Advance Stimul Consortium
- Amitabhj
- Assam Gas Company (AGCL)
- Bharat Petroleum
- British Gas Exploration and Production India
- Cairn India
- Chennai Petroleum (CPCL)
- Delhi Jal Board
- Engineers India (EIL)
- Essar Constructions
- Essar Oil
- Focus Energy
- GAIL (Gas Authority of India)
- Gammon India
- Gas Transportation and Infrastructure (GTICL)
- GKC
- Great Eastern Energy Corporation (GEECL)
- Gujarat State Petroleum (GSPC)
- Gujarat State Petronet (GSPL)
- Guru Gobind Singh Refineries
- H-Energy
- Hindustan Oil Exploration
- Hindustan Petroleum Corporation (HPCL)
- IL&FS Engineering Services
- Indian Oil Corporation (IOCL)
- Indian Strategic Petroleum Reserves Limited (ISPRL)
- Jaihind Projects
- Kalpataru Infrastructure
- Kalpataru Power Transmission
- Karnataka State Industrial Investment & Development Corp. (KSIIDC)
- Kochi Refineries
- Kolhapur Municipal Corporation (KMC)
- L&T's pipeline engineering centre
- L&T-RAMB?LL Consulting Engineers
- Larsen & Toubro
- Leighton International
- Leighton Welspun
- Mahanagar Gas Limited
- Maharashtra Industrial Development (MIDC)
- Major Indian oil and gas operator.
- Mecon
- Mittal Investments
- NMDC Limited
- Numaligarh Refinery Limited (NRL)
- ONGC (Oil and Natural Gas Corporation)
- ONGC Vitdesh (OVL)
- Petronet India (PIL)
- Pune Municipal Corporation (PMC)
- Punj Lloyd
- Reliance Gas Transportation Infrastructure (RGTIL)
- Reliance Industries (RIL)
- Reliance Petroleum (RPL)
- Secon
- South Asia Gas Enterprise (SAGE)
- Tata Steel
- Tripura Natural Gas Company Limited-
- Indonesia
- Bakrie Brothers
- Bayu Buana Gemilang (BBG),
- BP Berau
- BP Indonesia
- BPH Migas
- Conoco Indonesia
- Indonesia Government
- Medco Energi Internasional
- Nacap Indonesia
- Nippon Steel Construction Indonesia (NISCONI)
- NuTech Dinamika Semesta
- Pam Jaya
- PC Muriah Ltd
- Pertamina
- Pertamina Gas
- Perusahaan Daerah Pertambangan Dan Energi Gas (PDPDE)
- Perusahaan Gas Negara (PGN)
- Perusahaan Listrik Negara (PLN)
- Premier Oil Natuna Sea
- Punj Lloyd Indonesia
- Rekayasa Industri (REKIND)
- Saipem Indonesia
- Sempec Indonesia
- Synergy
- Total E&P Indonesia
- Total Indonesia
- Transportasi Gas Indonesia (Transgasindo)
- Tripatra Engineers & Consultants
- WorleyParsons Indonesia
- Japan
- Abu Dhabi Oil Company (ADOC)
- Chiyoda
- Indonesia Petroleum (INPEX)
- Inpex
- Itochu Corporation
- Japan Bank for International (JBIC)
- Japan National Oil Corporation (JNOC)
- Japan Oil Development Co. (JODCO)
- Japan Petroleum Exploration (Japex)
- Japan Pipeline Development and Operation (JPDO)
- JFE Engineering Corporation
- JFE Steel Corporation
- JGC
- JGC Corporation
- Kanematsu Corporation
- Kansai Electric Power Co. (Kepco)
- LNG Japan
- Marubeni Corporation
- Marubeni Oil and Gas Inc.
- Mitsubishi
- Mitsui & Co
- Mitsui Oil Exploration (MOECO)
- Moeco Vietnam Petroleum
- Nippon Oil
- Nippon Oil Exploration Berau
- Nippon Steel
- Nippon Steel & Sumikin Engineering Co., Ltd.
- NJS Consulting Engineers
- Osaka Gas
- Overseas Petroleum Corporation (OPC)
- Sakhalin Oil and Gas Development (Sodeco)
- Shizuoka Gas
- Sojitz Corporation
- Taihei Dengyo Kaisha
- Teikoku Oil
- Tokyo Electric Power Co. (TEPCO)
- Tokyo Gas
- Toyo Engineering
- Toyota Tsusho Corporation
- Kazakhstan
- Agip KCO
- Asia Gas Pipeline (AGP)
- ExxonMobil Kazakhstan
- KazMunaiGas (Kazakh oil and gas)
- KazStroyServices Plc
- KazTransGas
- KazTransOil
- MunaiTas
- North Caspian Operating Company (NCOC)
- Zhaikmunai
- Laos
- PetroLao
- Malaysia
- Alam Maritim
- Asia Consortium Petroleum Engineering and Gas
- Barmada McDermott (BMD)
- Bumi Armada
- Carigali-PTTEP Operating
- Dialog E&C
- Dialog Group
- Distinct Objective Sdn Bhd (DOSB)
- Enmac Sekutu Sdn Bhd
- ExxonMobil Exploration and Production Malaysia (EMEPMI)
- Gas Malaysia
- I'DA World Group Sdn Bhd
- Joint Development Area (JDA) Malaysia-Thailand.
- Kebabangan Petroleum Operating Company (KPOC)
- Kencana HL
- Leighton Asia (Southern)
- Leighton Offshore
- Malaysia Marine and Heavy Engineering Holdings (MHB)
- Merapoh
- Ministry of Energy, Green Technology and Water
- Ministry of Finance Malaysia
- Murphy Sabah Oil
- Nacap Asia Pacific (Malaysia)
- Petro-Pipe (Sabah) Sdn Bhd
- Petronas
- Petrosab Logistik
- Ramunia Holding
- Ranhill Berhad
- Real Offshore Installation
- Sabah Shell Petroleum
- Saipem Asia
- Sapura Energy
- SapuraAcergy (Subsea 7)
- SapuraCrest Petroleum
- SapuraKencana
- Sarawak Shell Berhad
- Shell Oil and Gas Malaysia Llc
- Sime Engineering Services
- Tl Offshore (M) Sdn Bhd
- Trans-Peninsula Petroleum (TPP),
- Wah Seong Corporation Berhad
- Myanmar
- Geocomp Myanmar
- Myanma Oil & Gas Enterprise (MOGE)
- Native Power Technology
- SMART Technical Services
- Nepal
- Nepal Oil Corporation (NOC)
- Pakistan
- Capital Development Authority (CDA)
- Crescent Group
- Frontier Works Organization (FWO)
- Inter State Gas Systems (ISGS)
- Mol Pakistan Oil & Gas Co.
- National Engineering Services Pakistan (NESPAK)
- Pak-Arab Refinery (PARCO)
- Pakistan Petroleum Ministry
- Pakistan State Oil
- Sui Northern Gas Pipelines (SNGPL)
- Sui Southern Gas Company (SSGC)
- Philippines
- Asian Development Bank (ADB)
- Philippine National Oil (PNOC)
- Shell Philippines Exploration
- Russia
- Bumi Armada Caspian LLC.
- Caspian Pipeline Consortium (CPC)
- ChelPipe
- Chevron Neftegaz Inc.
- Daltransgaz
- East Siberian Gas Company
- Exxon Neftegaz
- ExxonMobil Russia
- Gazprom
- Gazprom Invest Vostok
- Gazprom Mezhregiongaz
- Giprovostokneft
- Imperial Energy
- Interros
- Itera
- Lukoil
- Lukoil-Neftegasstroy (LNGS)
- Lukoil-Nizhnevolzhskneft
- Mezhregiontruboprovodstroy (MRTS
- MRK-Engineering
- Novatek
- Promstroi Group
- Rosneft
- Rostec
- Rusia Petroleum
- Sakhalin Energy Investment
- Sevmorneftegaz
- Sibneft
- Sovcomflot
- Stroygazmontazh
- Stroytransgaz
- Surgutneftegaz
- Tatneft
- TNK-BP
- Transneft
- Transnefteprodukt
- TsUP VSTO
- Tyumen Oil Co.
- Vankorneft
- Verkhnechonskneftegas (VCNG)
- VNIIST Oil and Gas Engineering Company
- Vostoknefteprovod
- Yamalgasinvest
- Yukos
- Zakneftegaz-Prometery
- Zarubezhneft
- Singapore
- BP Asia Pacific
- Britoil
- EOC
- Federal International (2000)
- Gaffney Cline (Singapour)
- Global Industries Asia Pacific
- Global Process System (GPS)
- Hallin Marine Subsea International
- J. Ray McDermott Far East
- Keppel Seghers Engineering Singapore
- Kvaerner E&C Singapore
- PowerGas
- Shell Gas & Power Asia Pacific
- Singapore Petroleum Company
- SMOE
- Swiber Holdings
- South Korea
- ACE Engineering
- Daelim industrial
- Daewoo Engineering & Construction
- Daewoo International Corporation
- Daewoo Shipbuilding & Marine Engineering
- Dilem Company
- Dongah Tec
- GS Engineering & Construction Corp.
- Hanwha Engineering and Construction Company
- Hyundai Asan Corporation
- Hyundai Corporation
- Hyundai Engineering & Construction (HEC)
- Hyundai Heavy Industries
- KOGAS (Korea Gas Corporation)
- KOMIPO (Korea Midland Power)
- Korea National Oil (KNOC)
- Korea Western Power Co.
- Korean Water Resources Corporation (KWRC)
- KoRus Gas
- KOSPO (Korea Southern Power)
- Sambunstruction
- Samsung Engineering
- Samsung Heavy Industries
- SK Corporation
- SKEC
- STX Heavy Industries
- Sri Lanka
- Ceylon Petroleum Storage Terminals
- National Water Supply & Drainage Board (Sri Lanka)
- Sierra Construction (Sri Lanka)
- Taiwan
- Chinese Petroleum Corporation (CPC)
- Water Resources Agency (Taiwan)
- Thailand
- Amerada Hess Thailand
- APICO Thailand
- Bangkok Aviation Fuel Services (BAFS)
- Biggas Technology
- CH.Karnchang Public Company
- Chevron Offshore (Thailand)
- Chevron Thailand Exploration and Production
- Clough (Thailand)
- Cuel
- ExxonMobil Exploration and Production Khorat
- FPT (Fuel Pipeline Transportation)
- Global Industries Offshore (Thailand)
- Gulf Energy
- McConnell Dowell Constructors Thai
- Nacap Asia Pacific (Thailand)
- NuCoastal (Thailand) (NTL)
- Pearl Oil (Thailand)
- PTT (Petroleum Authority of Thailand)
- PTT Exploration and Production (PTTEP)
- PTT Publicmpany
- PTTEP Hoan-Vu Company Limited or PTTEP HV
- PTTEP Thailand
- Sukhothai Petroleum
- Suvarnabhumi International Airport (SBIA)
- Taksina Pipeline
- Thappline (Thai Petroleum Pipeline)
- Trans Thai-Malaysia (Thailand) - Trans Thai-Malaysia (Malaysia)
- Turkmenistan
- TurkmenGaz
- Turkmenneftegazstroi
- Uzbekistan
- Asia Trans Gas
- Bukhara Samarkand Water Supply Project
- Uzbekneftegaz
- Vietnam
- BP Vietnam
- Chevron Vietnam
- Hoan Vu Joint Operating Company (HVJOC)
- Japan Vietnam Petroleum (JVPC)
- Petro Vietnam Gas Investment and Construction
- Petroleum Technical & Services Company (PTSC)
- PetroVietnam
- PetroVietnam Exploitation and Production (PVEP)
- PetroVietnam Gas Company (PV Gas)
- PetroVietnam Gas Investment and Construction
- Petrovietnam Technical Services (PTSC)
- PTSC Mechanical and Construction (PTSC M&C),
- Soco Vietnam
- Vietsovpetro
- Afghanistan
- Australasia
- Australia
- ABB Australia
- Abigroup
- ACTEW Corporation
- AGL Energy
- AGL-Petronas Consortium
- AJ Lucas Group
- Alcan Gove
- Alinta Energy
- ANZ Infrastructure Services (ANZIS)
- Anzon Australia
- APA Group
- Apache Energy
- Apache Northwest
- APT
- AquaSure
- Arc Energy
- Armidale Regional Council
- Arrow Energy
- Atteris Enginerring
- Aurox Resources
- Ausenco
- AusNet Services
- Australia Pacific LNG (APLNG).
- Australian Gas Infrastructure Group (AGIG)
- Australian Gas Light Company (AGL)
- Australian Gas Networks
- Australian Government Water Fund
- Australian National Power (ANP)
- Australian Pipeline Trust (APT)
- AWE (Australian Worldwide Exploration)
- Baraka Petroleum
- Barwon Water
- Basin Oil
- Bathurst Regional Council
- Beach Energy
- Bega Valley Shire Council
- Benaris International
- BHP Billiton
- Blue Energy
- Bow Energy
- BP Developments Australia
- Broken Hill Proprietary Company (BHP)
- Built Environs
- Burns and Roe Worley
- Central Petroleum
- Central Tablelands Water (CTW)
- Chevron Australia
- CITIC Pacific Mining
- Clough
- Clough Engineering
- Clough Projects International
- Clough Sea Trucks Joint Venture
- Coliban Water
- Comdain Civil Constructions
- ConocoPhillips Australia
- Consolidated Contractors Australia
- Cooper Energy
- Cue Energy
- DBP Development Group (DDG)
- Deerubbin WaterFutures Consortium
- Delco Australia
- Delta Electricity
- Diona
- Diversified Construction Corporation
- Drillsearch Energy
- DUET Group
- East Australian Pipeline Ltd
- East Coast Pipeline (ECP)
- Eastern Star Gas (ESG)
- EGS Survey Australia (EGS)
- Elk Petroleum
- Empire Oil and Gas
- Energy World Corporation (EWC)
- Enertrade
- Eos Joint Venture
- Epic Energy
- ERM Power
- Esperance Pipeline (EPC)
- Esso Australia Resources
- Esso Highlands
- Exergen
- Exoma Energy
- Foster Wheeler Energy Limited (Australia)
- Fugro Survey, Australia
- FutureFlow
- Galilee Energy
- GHD
- Gladstone Area Water Board
- Gladstone Pacific Nickel
- GLNG joint venture
- Global Offshore
- Gold Road Resources
- Gordon Joint Venture
- Gosford-Wyong Council Water Authority
- Goulburn Mulwaree Council
- Goulburn-Murray Water
- Goverment of Victoria - Department of Transport
- Government of Victoria
- Government of Western Australia
- Grange Resources
- Greenfield Technical Services
- Greenhouse Gas Abatement Program
- Gunns
- GWMWater
- Hastings Diversified Utilities Fund (HDF)
- Highlands Pacific
- Horizon Oil Limited
- Hunter Gas Pipeline
- Icon Energy
- Inpex Browse
- Intecsea Australia - Intecsea
- J P Kenny (Perth)
- Jacka Resources Limited
- Japan Australia LNG (MIMI)
- Jemena
- John Holland
- Karoon Gas Australia
- Kellogg Joint Venture
- Land Access & Management Services (LAMS)
- Leed Engineering and Construction
- Leigh Creek Energy Limited (LCK)
- Leighton Contractors
- Leighton Holdings
- Linc Energy
- LinkWater
- Liquefied Natural Gas Limited
- Liquid Niugini Gas
- Lower Murray Water
- Marengo Mining
- Maunsell AECOM
- McConnell Dowell
- McConnell Dowell Constructors (Aust)
- McCoy Engineering
- Melbourne Water
- Metgasco
- Mineral Resources Limited (MRL)
- Ministry for Climate Change, Energy Efficiency and Water
- Mitchell Water
- Mitsui E&P Australia
- Mittwell Energy
- Monadelphous
- Mount Gibson Iron
- MPC Kinetic
- Nacap Australia
- New South Wales Office of Water
- New Standard Exploration
- Newcrest Mining
- NewGen Power
- Nexus Energy
- Northern Territory Government (Australia)
- NT Gas
- OMV - Australia (Basin Oil)
- Origin Energy
- OSD Energy Services
- Pacific Aluminium
- Pan Pacific Petroleum (PPP)
- Peedamullah Petroleum
- Petronas Australia
- Petsec Energy
- Phosphate Australia
- Pipeline Systems Intl
- PTTEP Australasia (PTTEP AA)
- Queensland Curtis LNG Project
- Queensland Gas Company (QGC)
- Queensland Government
- Real Energy
- Red Sky Energy
- Rialto Energy
- Rockhampton Regional Council
- SA Water
- Santos
- Santos (Sampang)
- Senex Energy
- Shell Development (Australia)
- Sinclair Knight Merz.
- Snow Hydro
- South Australia Water Corporation
- South Australian Government
- South East Australia (SEA)
- Southern Downs Regional Council (Australia)
- Southern Seawater Alliance Consortium (SSWA)
- Spiecapag Lucas
- Sunshine Coast Regional Council (Queensland)
- SunWater
- Sydney Water
- Tap Oil
- Tasmanian Irrigation Development Board
- Technip Chiyoda Fluor Joint Venture
- Technip Oceania
- Transfield Services (Australia)
- Trinity Gas Resources
- United Infrastructure
- URS Corporation Australia
- Valmec
- Victorian Water Trust
- Water Corporation of Western Australia (The)
- Water Delivery Alliance
- WDS
- Wood Group Kenny
- Wood Group Wagners
- Woodside Energy
- Woodside Petroleum
- Worley Pipelines & Terminals
- WorleyParsons
- New Zealand
- Amuri Irrigation Co (AIC)
- Natural Gas Corporation of New Zealand (NGC)
- Nelson City Council
- New Zealand Oil & Gas (NZOG)
- Tauranga City
- Vector Limited
- Papua New Guinea
- Mineral Resources Development (MRDC)
- Oil Search
- Orogen Minerals (OML)
- Petromin PNG
- Australia
