tablissements Maurel & Prom

A.I.S. Resources Limited A2D Technologies Abbot Group plc Abington Ventures Inc.
Abraxas Energy Partners, L.P.
Abu Dhabi National Oil Company
Action Energy Inc.
Aera Energy LLC
Afren plc
AKITA Drilling Ltd. [AKTAF.PK]
AltaCanada Energy Corp.
American Natural Energy Corporation [ANRUF.PK]
Amerisur Resources PLC
Aminex PLC
Anadarko Algeria Company, LLC
Analytical Surveys, Inc. [ANLT.OB]
Antrim Energy Inc.
Apache North Sea Limited
Apex Resources Group, Inc. [APXR.OB]
Approach Resources Inc.
Arcis Corporation
Arctos Petroleum Corp.
Arena Resources, Inc. [ARD]
Ascent Energy Inc.
Aspen Group Resources Corporation [ASRPF.PK]
Atlas America, Inc. [ATLS]
Atlas Energy Resources, LLC [ATN]
Atlas Pipeline Holdings, L.P. [AHD]
Atwood Oceanics, Inc. [ATW]
Aurado Energy Inc.
Avalon Oil & Gas, Inc. [AOGN.OB]

Belden & Blake Corporation Big Sky Energy Corporation [BSKO.PK] Bill Barrett Corporation [BBG] Birchcliff Energy Ltd.
Black Rock Oil & Gas Plc
Blue Ridge Group, Inc.
Bois d'Arc Energy, Inc. [BDE]
Bonavista Energy Trust
Bow Valley Energy Ltd.
BP (China) Holdings Limited
BP Brasil Ltda
BP Exploration Operating Company Limited
BP NGL
BP Sakhalin
BPI Energy Holdings, Inc. [BPG]
BPZ Energy, Inc. [BZP]
BreitBurn Energy Partners L.P. [BBEP]
Brek Energy Corporation [BREK.PK]
Bridge Resources Corporation
Bronco Drilling Company, Inc. [BRNC]
BUE Marine Limited
Buffalo Resources Corp.
Burmis Energy Inc.
Burren Energy plc

C & C Technologies, Inc. Cairn Energy PLC Calfrac Well Services Ltd. CAMAC Holdings, Inc.
Canadex Resources Limited
Canadian Oil Sands Trust [COSWF.PK]
Canadian Superior Energy Inc. [SNG]
Cano Petroleum, Inc. [CFW]
Capco Energy, Inc. [CGYN.PK]
Celtic Exploration Ltd.
Centurion Energy International Inc.
Century Energy Ltd. [CEYFF.PK]
CEP International Petroleum Ltd.
Chaparral Energy, Inc.
Cheniere Energy, Inc. [LNG]
Chevron U.K. Ltd
Cheyenne Energy Inc.
China National Petroleum Corporation
China North East Petroleum Holdings Limited [CNEH.OB]
China Oilfield Services Limited
Chugach Alaska Corporation
CityView Corporation Limited [CTVWF.OB]
CNPC (Hong Kong) Limited [CKKHF.PK]
CNX Gas Corporation [CXG]
Cobra Venture Corporation
Compton Petroleum Corporation [CMZ]
Concho Resources Inc. [CXO]
Connacher Oil and Gas Limited
ConocoPhillips Alaska, Inc.
Constellation Energy Partners LLC [CEP]
Continental Resources, Inc. [CLR]
Corridor Resources Inc.
Crescent Point Energy Trust
Curlew Lake Resources Inc. [CWLXF.PK]
CYGAM Energy Inc.
Cygnus Oil and Gas Corporation [CYNS.PK]
Cyries Energy Inc.

Dakota Gasification Company Dana Petroleum plc Deep Well Oil & Gas, Inc. [DWOG.PK] Deer Creek Energy Limited
Defiant Resources Corporation
Derek Oil & Gas Corporation [DRKOF.PK]
Desire Petroleum plc
Destiny Resource Services Corp.
Diamond Offshore Drilling, Inc. [DO]
Diaz Resources Ltd.
Dolphin Drilling Ltd.
Doyon, Limited
Dragon Oil PLC
Drilcorp Energy Ltd.
Drillers Technology Corp.
Dune Energy, Inc. [DNE]
Duvernay Oil Corp.

E4 Energy Inc. ECL Group PLC Eden Energy Corp. [EDNE.OB] Ellora Energy Inc.
Emerald Energy Plc
Empiric Energy, Inc. [EPRC.PK]
EnCana Oil & Gas (USA) Inc.
Encore Energy Partners LP
EnCore Oil plc
Endev Energy Inc.
Energy Corporation of America
Energy Exploration Technologies Inc. [ENXTF.OB]
Enerplus Resources Fund [ERF]
ENSCO International Incorporated [ESV]
Ensign Energy Services Inc. [ESVIF.PK]
Ensign United States Drilling Inc.
Enterra Energy Trust [ENT]
Equus Energy Corporation
Eurogas Corporation
EV Energy Partners, L.P. [EVEP]
Exxel Energy Corp.

Fairborne Energy Trust FairWest Energy Corporation Falcon Oil & Gas Ltd. Faroe Petroleum plc
First Calgary Petroleums Ltd.
Flagship Energy Inc. [FGSPF.PK]
Flint Hills Resources, LP
Fortress Energy Inc.
Fred. Olsen Energy ASA
Fugro N.V.

Gary-Williams Energy Corporation Gastar Exploration Ltd. [GST] GE Oil & Gas Gemini Energy Corp.
Gentry Resources Ltd.
GEOCAN Energy Inc.
GeoGlobal Resources Inc. [GGR]
GeoMet, Inc. [GMET]
Geophysical Consultants Limited
GeoTomo LLC
Global Energy Development PLC
Global Geophysical Services, Inc.
GlobalSantaFe Corporation [GSF]
Grant Geophysical, Inc.
Great Plains Exploration Inc.
Grey Wolf, Inc. [GW]
GSV, Inc. [GSVI.OB]
Guardian Exploration Inc.
Gulf Island Fabrication, Inc. [GIFI]
Gulfside Minerals Ltd.

Habanero Resources Inc. Heartland Oil and Gas Corp. [HTOG.OB] Helmerich & Payne International Drilling Co. Helmerich & Payne, Inc. [HP]
Hercules Offshore, Inc. [HERO]
Heritage Oil Corporation
Hess Limited
Highpine Oil & Gas Limited
Hiland Holdings GP, LP [HPGP]
Hiland Partners, LP [HLND]
Howard Energy Corp.
Hunt Consolidated Inc.
Hunt Oil Company
Husky Energy Inc.
Hyperdynamics Corporation [HDY]

INPEX Holdings Inc. Iteration Energy Ltd. Ivanhoe Energy Inc. [IVAN]

Jacobs Financial Group, Inc. [JFGI.OB] Japan Petroleum Exploration Co. Ltd. JED Oil Inc. [JDO] JKX Oil and Gas plc

Kaiser-Francis Oil Company KCA DEUTAG Drilling Limited Key Energy Services, Inc. [KEGS.PK] Kodiak Oil & Gas Corp. [KOG]
Kuwait Petroleum Corporation

Legacy Reserves LP [LGCY] LiteWave Corp. [LTWV.OB] LongBow Resources Inc. Lundin Petroleum AB

Mahalo Energy Ltd. Marathon Oil Company Marathon Oil UK Ltd. Mariner Energy, Inc. [ME]
MarkWest Energy Partners, L.P. [MWE]
Marubeni Corporation [MARUF.PK]
Masters Energy Inc.
Matador Resources Company
Maverick Minerals Corporation [MVRM.PK]
Melrose Resources plc
Merit Energy Company
Metalore Resources Limited
Midnight Oil Exploration Ltd.
Milagro Energy Inc.
Miller Petroleum, Inc. [MILL.PK]
Montello Resources Ltd.
Murphy Exploration & Production Company - International
Murphy Exploration & Production Company - USA
Mustang Fuel Corporation
MV Oil Trust [MVO]
Mystique Energy, Inc.

Nabors Drilling USA, LP Nabors Industries Ltd. [NBR] Nabors Well Services NATCO Group Inc. [NTG]
National Iranian Oil Company
National Oil Corporation
National Onshore LP
Ness Energy International, Inc. [NESS.PK]
Nexen Inc. [NXY]
NGAS Resources, Inc. [NGAS]
Nicklos Drilling Company
Niko Resources Ltd.
Noble Corporation [NE]
Noble Drilling (U.S.) Inc.
Norsk Hydro ASA [NHY]
North West Oil Group Inc.
NuTech Energy Alliance Corporation
NuVista Energy Ltd.

OAO Gazprom OAO Novatek OAO Rosneft Oil Company Occidental Oil and Gas Corporation
Occidental Permian, Ltd.
Ocean Rig ASA [OCNRF.PK]
Oil & Natural Gas Corporation Limited
Oil and Gas Development Company Limited
Oil Search Limited
Oilexco Incorporated
OJSC Surgutneftegas [SGTZY.PK]

Pacific Energy Resources Ltd. Pan Andean Resources PLC Pangea Petroleum Corporation [PAPO.OB] Paradigm Geotechnology B.V.
Paradigm Ltd.
Paramount Resources Ltd.
Parker Drilling Company [PKD]
Patterson-UTI Energy, Inc. [PTEN]
Peak Energy Services Trust
Pebercan Inc.
Pengrowth Energy Trust [PGH]
Peregrine Energy Ltd.
Perusahaan Pertambangan Minyak Dan Gas Bumi Negara
Petrel Resources plc
Petro Rubiales Energy Corp.
Petro-Hunt, L.L.C.
Petrobank Energy and Resources Ltd.
Petrobras America Inc.
Petroceltic International plc
PetroKazakhstan Inc.
Petrol Industries, Inc. [PTLD.PK]
Petroleum Geo-Services ASA [PGSVY.PK]
Petrosearch Energy Corporation [PTSG.OB]
Petsec Energy Ltd [PSJEY.PK]
Peyto Energy Trust
Phoenix Technology Income Fund
Pinnacle Gas Resources, Inc. [PINN]
Pioneer Drilling Company [PDC]
Pioneer Oil and Gas
Pioneer Southwest Energy Partners L.P.
Point North Energy Ltd.
Portrush Petroleum Corporation [PRRPF.OB]
PRB Energy, Inc. [PRB]
Premier Oil plc
Pride International, Inc. [PDE]
Providence Resources, Inc. [PVRS.OB]
Pulse Data Inc.
PYR Energy Corporation
Pyramid Oil Company

Quest Energy Partners, L.P. Quest Resource Corporation [QRCP] Questar Market Resources, Inc. Questerre Energy Corporation
Quicksilver Gas Services LP [KGS]

Ramco Energy plc Regal Petroleum plc Rex Energy Corporation Rider Resources Ltd.
Rival Energy Ltd.
Rock Energy Inc.
Rocky Old Man Energy Inc.
Rolland Energy Inc.
Rolling Thunder Exploration Ltd.
Rosemore, Inc.
Rowan Companies, Inc. [RDC]
RSX Energy Inc.
RWE-DEA Aktiengesellschaft fr Mineraloel und Chemie

Sabretooth Energy Ltd. Saipem S.p.A. Sakhalin Energy Investment Company Ltd. Samson Investment Company
Samson Oil and Gas USA, Inc
SandRidge Energy, Inc.
Santos Ltd [STOSY]
Saxon Energy Services Inc.
Secunda International Limited
Sefton Resources, Inc. [SFNRF.PK]
Seitel, Inc.
Seneca Resources Corporation
Serica Energy Corporation
Sharon Energy Ltd.
Shell Canada Limited
Shell Exploration & Production Company
Signa Engineering Corp.
SNRG Corporation [SNRG.PK]
SOCO International plc
Softrock Minerals Ltd.
Sonsub Inc.
Sound Energy Trust
Spectrum Energy and Information Technology Ltd.
Sperry Drilling Services
Statoil ASA [STO]
Sterling Energy plc
Sterling Resources Ltd.
Storm Cat Energy Corporation [SCU]
Strata Oil & Gas Inc. [SOIGF.OB]
Stratford American Corporation
Stratic Energy Corporation
Stylus Energy Inc.
Sundance Resources, Inc.
Sure Energy Inc.
Surge Global Energy, Inc. [SRGG.OB]
Syncrude Canada Ltd.

TBX Resources, Inc. [TBXC.PK] Teikoku Oil Co., Ltd. Tengasco, Inc. [TGC] Terax Energy, Inc. [TEXG.OB]
Teton Energy Corporation [TEC]
Texalta Petroleum Ltd.
TG World Energy Corp.
TGS-NOPEC Geophysical Company ASA
The Scotia Group, Inc.
THUMS Long Beach Company
Titan Logix Corp.
TODCO
Torque Energy Inc.
Total Energy Services Trust
TRAFINA Energy Ltd.
TransAtlantic Petroleum Corp.
Transmeridian Exploration, Inc. [TMY]
Transocean Inc. [RIG]
Trek Resources, Inc.
Tri-Valley Corporation [TIV]
Trican Well Service Ltd.
Trident Resources Corp.
Triple 8 Energy Ltd.
TriStar Oil & Gas Ltd.
Trivello Ventures Inc. [TRVEF.PK]
True Energy Trust
TrueStar Petroleum Corporation
Tullow Oil plc
Tuscany Energy Ltd.

Union Drilling, Inc. [UDRL] Unit Corporation [UNT] United Heritage Corporation [UHCP] UTS Energy Corporation

Vanguard Natural Resources, LLC Venoco, Inc. [VQ] Venture Production plc Vermilion Energy Trust
VTEX Energy, Inc. [VXEN.PK]

W&T Offshore, Inc. [WTI] West Energy Ltd. Westbow Energy Inc. Western Oil Sands Inc.
WesternGeco
Westside Energy Corporation, Inc. [WHT]
Whiting Petroleum Corporation [WLL]
Windsor Energy Resources, Inc.
Winstar Resources, Ltd.
Wintershall Holding AG
Woodside Petroleum Ltd. [WOPEF.PK]

XinAo Gas Holdings Limited

Yangarra Resources Ltd. Yoho Resources Inc.

Zapata Energy Corporation

Abraxas Petroleum Corporation [ABP] Allegheny Energy Supply Company, LLC Altek Power Corporation [APKKF.PK] Altex Industries, Inc. [ALTX.OB] AmerGen Energy Company, LLC
American Oil & Gas, Inc. [AEZ]
Americas Power Partners, Inc. [APPN.PK]
Anadarko Petroleum Corporation [APC]
Apache Corporation [APA]
Apco Argentina Inc. [APAGF]
Aspen Exploration Corporation [ASPN.OB]
ATP Oil & Gas Corporation [ATPG]
Aurora Oil & Gas Corporation [AOG]
Avenue Group, Inc. [AVNU.OB]

Barnwell Industries, Inc. [BRN] Basic Earth Science Systems, Inc. [BSIC.OB] Bayou City Exploration, Inc. [BYCX.OB] Berry Petroleum Company [BRY] Blue Dolphin Energy Company [BDCO]
Boralex Inc.
Brigham Exploration Company [BEXP]
British Energy Group plc [BEYGF.PK]
Brookfield Power Corporation

Cabot Oil & Gas Corporation [COG] Callon Petroleum Company [CPE] Calpine Corporation Canadian Hydro Developers, Inc. [CHDVF.PK] Canadian Natural Resources Limited [CNQ]
CanArgo Energy Corporation [CNR]
Carrizo Oil & Gas, Inc. [CRZO]
Chesapeake Energy Corporation [CHK]
China HuaNeng Group
China Petroleum & Chemical Corporation [SNP]
Cimarex Energy Co. [XEC]
CKX Lands, Inc. [CKX]
Clayton Williams Energy, Inc. [CWEI]
CNOOC Limited [CEO]
Coast Mountain Power Corp.
Cogentrix Energy, Inc.
Comstock Resources, Inc. [CRK]
Constellation Generation Group, LLC
Contango Oil & Gas Company [MCF]
Continental Energy Corporation [CPPXF.OB]
Covanta Energy Corporation
CREDO Petroleum Corporation [CRED]
Crimson Exploration, Inc. [CXPO.OB]
Crosstex Energy, L.P. [XTEX]

Datang International Power Generation Company Limited [DIPGF.PK] Delta Petroleum Corporation [DPTR] Denbury Resources Inc. [DNR] Devon Energy Corporation [DVN] Double Eagle Petroleum Co. [DBLE]
Drax Group plc [DRXGF.PK]

Edge Petroleum Corporation [EPEX] Edison Mission Energy Edison S.p.A. Electric Energy, Inc. Empire Energy Corporation International [EEGC.OB]
Enbridge Energy Management, L.L.C. [EEQ]
EnCana Corporation [ECA]
Encore Acquisition Company [EAC]
Endeavour International Corporation [END]
Energy Partners, Ltd. [EPL]
Enterprise Products Partners L.P. [EPD]
EOG Resources, Inc. [EOG]
ERHC Energy Inc. [ERHE.OB]
Evolution Petroleum Corporation [EPM]
EXCO Resources, Inc. [XCO]

Far East Energy Corporation [FEEC.OB] FEC Resources, Inc. [FECOF.OB] FieldPoint Petroleum Corporation [FPP] Forest Oil Corporation [FST]

Galaxy Energy Corporation [GAX] Gasco Energy, Inc. [GSX] GeoPetro Resources Company [GPR] GeoResources, Inc. [GEOI] GMX Resources Inc. [GMXR]
Goodrich Petroleum Corporation [GDP]
Gulfport Energy Corporation [GPOR]

Hallador Petroleum Company [HPCO.OB] Harvest Natural Resources, Inc. [HNR] HKN, Inc. [HKN] Houston American Energy Corp. [HUSA]

Indeck Energy Services, Inc. InterGen International Power plc [IPRPY.PK] Isramco, Inc. [ISRL]

Linn Energy, LLC [LINE]

Magellan Petroleum Corporation [MPET] Martin Midstream Partners L.P. [MMLP] Matrix Energy Services Corporation [MXES.OB] Maxim Power Corp. [MXGFF.PK] McMoRan Exploration Co. [MMR]
Mexco Energy Corporation [MXC]
Midwest Generation, LLC

National Energy Group, Inc. [NEGI.OB] Newfield Exploration Company [NFX] Noble Energy, Inc. [NBL]

Oakridge Energy, Inc. [OAKR.OB] Occidental Petroleum Corporation [OXY]

Panhandle Oil and Gas Inc. [PHX] Parallel Petroleum Corporation [PLLL] Penn Virginia Corporation [PVA] Petrohawk Energy Corporation [HK] PetroQuest Energy, Inc. [PQ]
Pioneer Natural Resources Company [PXD]
Plains Exploration and Production Company [PXP]
Pogo Producing Company [PPP]
PPL Generation, LLC
PPL Montana LLC
PPM Energy, Inc.
Premier Power Limited
PrimeEnergy Corporation [PNRG]
PSEG Energy Holdings L.L.C.
PSEG Power LLC

Questar Corporation [STR] Quicksilver Resources Inc. [KWK]

Range Resources Corporation [RRC] Rocky Mountain Minerals, Inc. [RMMI.OB] Rosetta Resources Inc. [ROSE] Royale Energy, Inc. [ROYL]

Sempra Generation Southern Power Company Southwestern Energy Company [SWN] Spindletop Oil & Gas Co. [SPND.OB] St. Mary Land & Exploration Company [SM]
Standard Energy Corporation [STDE.OB]
Stone Energy Corporation [SGY]
STP Nuclear Operating Company
Suncor Energy Inc. [SU]
Swift Energy Company [SFY]
Synex International Inc.

Talisman Energy Inc. [TLM] Texas Vanguard Oil Company [TVOC.OB] The Meridian Resource Corporation [TMR] The Reserve Petroleum Company [RSRV.OB] Toreador Resources Corporation [TRGL]
TransAlta Power, L.P.
TransGlobe Energy Corporation [TGA]
TXCO Resources Inc. [TXCO]

Ultra Petroleum Corp. [UPL]

VAALCO Energy, Inc. [EGY]

XTO Energy Inc. [XTO]

Amalie Oil Company, Inc. American Agip Company, Inc.

BG Group plc [BRG] BP Lubricants USA, Inc. BP p.l.c. [BP]

Castrol India Limited Center Oil Company Chevron Corporation [CVX] City Service Valcon, LLC. ConocoPhillips [COP] Consolidated Beacon Resources Ltd.
Coulson Oil Company, Inc.

Eni S.p.A. [E] Exxon Mobil Corporation [XOM]

George E. Warren Corporation Getty Petroleum Marketing Inc. Golden Gate Petroleum Greenergy International Limited Gulf Oil Limited Partnership

Haycock Petroleum Co.

J.A.M. Distributing Company

LG Group Lykins Companies, Inc.

Merrimac Energy Group MFA Oil Company

Petrobras Distribuidora S.A. Petrobras Energa Participaciones S.A. [PZE] PetroChina Company Limited [PTR] Petroleum Traders Corporation

Ramos Oil Company, Inc. Redwood Coast Petroleum, Inc. Repsol YPF, S.A. [REP] RKA Petroleum Companies, LLC

Sprague Energy Corp. Sun Coast Resources Inc.

Taylor Oil Co., Inc. Texor Petroleum Company, Inc. The Hollingsworth Companies The SoCo Group, Inc. The Valvoline Company Thomas Petroleum Company, Inc.
TOTAL S.A. [TOT]
Truman Arnold Companies

U.S. Oil Co., Inc.

Vanguard Petroleum Corporation

Warren Equities, Inc.

Able Energy, Inc. [ABLE.PK] Acergy S.A. [ACGY] Aker Kvrner ASA [AKKVF.PK] All Star Gas Corporation Allied Resources, Inc. [ALOD.OB] Allis-Chalmers Energy Inc. [ALY] AltaGas Income Trust [ATGFF.PK] Arctic Slope Regional Corporation
ASRC Energy Services
Austral Pacific Energy Ltd. [AEN]
Aygaz A.S.

Baker Atlas Baker Hughes Incorporated [BHI] Basic Energy Services, Inc. [BAS] Bayside Fuel Oil Depot Corporation Beasley Enterprises, Inc. Beck Suppliers, Inc. Benit Fuel Sales and Service Inc. BJ Services Company [BJS]
Blarney Castle Oil and Propane Co.
Blast Energy Services, Inc. [BESV.OB]
Blue Rhino
Bolt Technology Corporation [BTJ]
Boots & Coots International Well Control, Inc. [WEL]
BOURBON
BP France

C-Tech Energy Services Inc. Cal Dive International, Inc. [DVR] Cameron International Corporation [CAM] CARBO Ceramics Inc. [CRR] Carroll Independent Fuel Co. Caspian Services, Inc. [CSSV.OB] Castle Oil Corporation CCR Technologies Ltd. [CCRJF.PK]
CDM Resource Partners, L.P.
CGGVeritas [CGV]
Challenger International Inc.
Chemoil Corporation
Chevron Pipe Line Company
China Aviation Oil (Singapore) Corporation Ltd [CAOLF.PK]
CMS Gas Transmission Company
Complete Production Services, Inc. [CPX]
Compressco, Inc.
Compressor Systems, Inc.
Core Laboratories N.V. [CLB]
Crystal Flash Energy
Cudd Pressure Control, Inc.
Cudd Pumping Services

Dawson Geophysical Company [DWSN] DEVIN International, Inc. Diamondback Energy Services, Inc. Diversified Industries Ltd. Dixie Gas & Oil Corporation Dril-Quip, Inc. [DRQ]

E1 Corp. Eaton Oil Tools, Inc. Edeco Petroleum Services Limited EGPI Firecreek, Inc. [EFCR.OB] Energas Resources, Inc. [EGSR.OB] Eni Lasmo Plc Equitable Supply Company Equitrans, LP
Eveready Income Fund
Expro International Group PLC
Exterran Holdings, Inc. [EXH]
Exterran Partners, L.P. [EXLP]

Fabricom Fabricom GTI Farm & Home Oil Company Farstad Oil, Inc. Flint Energy Services Ltd. FMC Technologies, Inc. [FTI] Frank's Casing Crew & Rental Tools, Inc. FX Energy, Inc. [FXEN]

Gaffney, Cline & Associates Ltd. Garneau Inc. Grant Prideco, Inc. [GRP] Griffith Energy Services, Inc GulfMark Offshore, Inc. [GLF]

Halliburton Company [HAL] Helix Energy Solutions Group, Inc. [HLX] HOP Energy, LLC Hughes Christensen Company Hunting PLC

Infinity Energy Resources, Inc. [IFNY] Innicor Subsurface Technologies Inc. Itochu Enex Co., Ltd.

J-W Operating Company J. Ray McDermott, S.A. John Wood Group PLC

Kiewit Offshore Services, Ltd. Kinder Morgan, Inc. Korea Gas Corporation

Leffler Energy Lufkin Industries, Inc. [LUFK]

MarkWest Hydrocarbon, Inc. [MWP] Marquard & Bahls AG Martin Resource Management, Inc. Meenan Oil Co., L.P. MercFuel, Inc. Mirabito Fuel Group Monument Resources, Inc. [MNMN.OB] Mullen Group Income Fund

NACG Holdings Inc. [NOA] National Oilwell Varco, Inc. [NOV] Natural Gas Services Group, Inc. [NGS] Newpark Mats & Integrated Services, LLC Newpark Resources, Inc. [NR] NOCO Energy Corp. NQL Energy Services Inc. NWF Group plc

Oceaneering International, Inc. [OII] OGE Enogex Partners L.P. Oil States International, Inc. [OIS] OMNI Energy Services Corp. [OMNI] OPTI Canada Inc. OYO Geospace Corporation

Panva Gas Holdings Limited Particle Drilling Technologies, Inc. [PDRT] Pe Ben Oilfield Services L.P. Peak USA Energy Services Ltd. Petro Holdings, Inc. Petrofac Facilities Management Ltd. PetroLiance LLC Petron Industries Inc.
Pettit Oil Company
Pipeline Engineering & Supply Co. Ltd.
Precision Drilling Trust [PDS]
Premier Pipe, L.P.
PTT Exploration and Production Public Company Limited [PTXLF.PK]

Quarles Petroleum Incorporated

Red Man Pipe & Supply Company Rogers Oil Tool Services Royal Vopak N.V. RPC, Inc. [RES] Rubis

Santa Holding Company Savanna Energy Services Corp. SBM Offshore N.V. SC Fuels Schlumberger Limited [SLB] ShawCor Ltd. Shell Global Solutions International BV Shipley Energy Company
SHV Holdings N.V.
Siem Offshore Inc.
Sippin Energy Products
SK Gas
SMF Energy Corporation [FUEL]
Smith International, Inc. [SII]
Sondex plc
Sparrows Offshore Services Limited
SPM Flow Control, Inc.
Stag Geological Services Limited
Stallion Oilfield Services Ltd.
Stewart & Stevenson LLC
Stuyvesant Fuel Service Corporation
Subsea 7 Inc.
Superior Energy Services, Inc. [SPN]
Superior Offshore International, Inc. [DEEP]
Superior Plus Income Fund
Superior Well Services, Inc. [SWSI]

T. D. Williamson, Inc. Technicoil Corporation Technip UK Limited (Aberdeen) TerraVest Income Fund Tesco Corporation [TESO] TETRA Technologies, Inc. [TTI] TGC Industries, Inc. [TGE] The Wills Group, Inc.
Tidelands Oil & Gas Corporation [TIDE.OB]
Titan Petrochemicals Group Limited
TransMontaigne Inc.
Tribute Resources Inc.
Trico Marine Services, Inc. [TRMA]
Tristream Energy, LLC.

Vesco Oil Corporation Vetco Gray Vulcan Energy Corporation

W-H Energy Services, Inc. [WHQ] Warren Resources, Inc. [WRES] Watson Petroleum Ltd. Weatherford International Ltd. [WFT] Webber Energy Fuels Wenzel Downhole Tools Ltd. Western States International, Inc. Wild Well Control, Inc.
Willbros Group, Inc. [WG]
Wilson
Wilson Oil, Inc.
Wood Group ESP, Inc.
Wood Group Pressure Control, L.P.
Woodfin Oil Company

Zedi Inc.

Alliance Pipeline Alyeska Pipeline Service Company ANR Pipeline Company
Atlas Pipeline Partners, L.P. [APL]

Boardwalk Pipeline Partners, LP [BWP] Bridgeline Holdings, L.P. British Pipeline Agency Ltd.
Buckeye GP Holdings L.P. [BGH]
Buckeye Partners, L.P. [BPL]
Buckeye Pipe Line Company, L.P.

Cheniere Energy Partners, L.P. [CQP] Clean Energy Fuels Corp. [CLNE] Colonial Pipeline Company
Colorado Interstate Gas Company
Columbia Gas Transmission Corp.
Columbia Gulf Transmission Co.
Companhia de Gs de So Paulo
Copano Energy, L.L.C. [CPNO]
CrossCountry Energy, LLC

DCP Midstream Partners, LP [DPM] Distrigas S.A. Dominion Transmission, Inc.
Duncan Energy Partners L.P. [DEP]

E.ON Ruhrgas AG El Paso Corporation [EP] El Paso Pipeline Partners, L.P.
Enags, S.A. [ENGGF.PK]
Enbridge (U.S.) Inc.
Enbridge Energy Partners, L.P. [EEP]
Enbridge Inc. [ENB]
Energy Transfer Equity, L.P. [ETE]
Energy Transfer Partners, L.P. [ETP]
Enogex, Inc.
ExxonMobil Pipeline Company

Florida Gas Transmission Company Fluxys SA Fort Chicago Energy Partners L.P. [FCGYF.PK]

Gas Transmission Northwest Corporation Gateway Energy Corporation [GNRG.OB] Gendis Inc.
Genesis Energy, L.P. [GEL]
Great Lakes Gas Transmission Company
Gulf South Pipeline Company, LP
Gulfstream Natural Gas System, L.L.C.

Holly Energy Partners, L.P. [HEP]

Iroquois Gas Transmission System L.P. Iroquois Pipeline Operating Company

Jayhawk Pipeline, L.L.C.

Kinder Morgan Canada Kinder Morgan Energy Partners, L.P. [KMP] Kinder Morgan Management, LLC [KMR]

Magellan Midstream Holdings, L.P. [MGG] Magellan Midstream Partners, L.P. [MMP]

N.V. Nederlandse Gasunie North Baja Pipeline LLC Northern Natural Gas Company
Northwest Pipeline Corporation
NuStar Energy L.P. [NS]
NuStar GP Holdings, LLC [NSH]

Olympic Pipe Line Company ONEOK Partners, L.P. [OKS]

Panhandle Eastern Pipe Line Company, LP Panhandle Energy Plains All American Pipeline, L.P. [PAA]
Plains GP Holdings, L.P.
Plantation Pipe Line Company

Questar Pipeline Company

Regency Energy Partners LP [RGNC]

SemGroup Energy Partners, L.P. SemGroup, L.P. Shell Pipeline Company, LP
Southern Natural Gas Company
Spectra Energy Corp [SE]
Spectra Energy Partners, LP [SEP]
Sunoco Logistics Partners L.P. [SXL]

Targa Resources Partners LP [NGLS] TC PipeLines, LP [TCLP] TEPPCO Partners, L.P. [TPP]
Texas Gas Transmission, LLC
The Williams Companies, Inc. [WMB]
Transcontinental Gas Pipe Line Corporation
TransMontaigne Partners L.P. [TLP]
Transneft
Transportadora Brasileira Gasoduto Bolvia-Brasil S.A.

U.S. Gas Transmission

Vector Pipeline L.P.

Williams Gas Pipeline, LLC Williston Basin Interstate Pipeline Company Wolverine Pipe Line Company

1st NRG Corp [NPTUE.OB]

Air BP Limited Alon USA Energy, Inc. [ALJ]
Apex Oil Company, Inc.
APS Energy Services Company, Inc.
APX Inc.
Arabian American Development Company [ARSD.OB]
AVIN OIL AVENEP S.A.

Berry-Hinckley Industries Better Biodiesel, Inc. [BBDS.OB]
Bharat Petroleum Corporation Limited
Big West Oil, LLC
BizzEnergy Ltd
Bongaigaon Refinery & Petrochemicals Limited
BP Marine Limited
BP Prudhoe Bay Royalty Trust [BPT]
Bri-Chem Corp.

Caltex Australia Limited Calumet Specialty Products Partners, L.P. [CLMT]
Camfin SpA
Catlettsburg Refining, LLC
Centrica plc [CPYYF.PK]
Chennai Petroleum Corporation Limited
Cheshire Oil Company, Inc.
Chevron Products Company
Chevron U.S.A. Inc.
China Petrochemical Corporation
Chinese Petroleum Corporation
CITGO Petroleum Corporation
CITGO Refining and Chemicals Company, L.P.
Colonial Group Inc.
Commercial Energy of Montana, Inc.
Compaa Espaola de Petrleos, S.A.
Companhia Brasileira de Petrleo Ipiranga
Companhia Logstica de Combustveis, S.A.
Consolidated Edison Solutions, Inc.
Constellation NewEnergy, Inc.
Cosmo Oil Company, Limited [CMOOF.PK]
CPL Industries Limited
Crosstex Energy, Inc. [XTXI]
Crown Central LLC
CVR Energy, Inc.

Delek Group Ltd. Delek US Holdings, Inc. [DK]
Delta Fuel Company, Inc.
Direct Energy
Direct Energy Texas

E.ON UK plc Eagle Rock Energy Partners, L.P. [EROC]
Ecotricity
EDF Energy plc
Electrabel S.A.
Empresa Colombiana de Petrleos
Empresas Copec S.A.
Energetix, Inc.
ENMAX Corporation
Enporion, Inc.
Enterprise GP Holdings L.P. [EPE]
EPCOR Utilities Inc.
ERG S.p.A.
Esso Petroleum Company Limited
Esso S.A.F.
ExxonMobil International Limited

First Choice Power, Inc. Formosa Petrochemical Corporation
Frontier El Dorado Refining Company
Frontier Oil Corporation [FTO]
Frontier Refining & Marketing Inc.

Galp Energia SGPS, S.A. Gestore del Mercato Elettrico S.p.A.
Gexa Energy, L.P.
Gibunco Group
Good Energy Group PLC
Green Energy (UK) Plc
Green Mountain Energy Company
GS Caltex Corporation
Guttman Oil Company

Hellenic Petroleum S.A. Hess Corporation [HES]
Hindustan Petroleum Corporation Limited
Holly Corporation [HOC]
HOVENSA, L.L.C.

IBP Co. Limited ICE Futures
Idemitsu Kosan Co., Ltd.
Imperial Oil Limited [IMO]
Indian Oil Corporation Limited [IOC.NS]
Integrys Energy Services, Inc.
InterOil Corporation [IOC]
Irving Oil Corporation
Irving Oil Limited

J. R. Rix & Sons Limited J.D. Streett & Company, Inc.

KBC Advanced Technologies plc Koch Industries, Inc.
Kochi Refineries Limited

LOOP LLC

Mangalore Refinery and Petrochemicals Limited Marathon Oil Corporation [MRO]
Marathon Petroleum Company LLC
Maxum Petroleum Holdings, Inc.
Midstream Fuel Service LLC
MOL Magyar Olaj-s Gzipari Nyrt.
Motiva Enterprises LLC
Motor Oil (Hellas) Corinth Refineries S. A.
Murphy Oil Corporation [MUR]

National Cooperative Refinery Association Navajo Refining Company, LP
Neste Oil Corporation
NewGen Technologies, Inc. [NWGN.OB]
Nigerian National Petroleum Corporation
Nippon Mining Holdings, Inc.
Nippon Oil Corporation
Nova Biosource Fuels, Inc. [NBF]

OAO Gazprom Neft OAO LUKOIL [LUKOY.PK]
OAO Tatneft
OAO TNK-BP Holding
Oil Refineries Limited
OMV Aktiengesellschaft [OMVKY.PK]
ONEOK Energy Services Company
Oxbow Carbon & Minerals
Oxbow Corporation

Pakistan State Oil Company Limited Paramount Petroleum Corporation
PDV America, Inc.
Peninsula Petroleum Ltd.
Pepco Energy Services, Inc.
PETRLEO BRASILEIRO S.A. - PETROBRAS [PBR]
Petrleos de Venezuela S.A.
Petrleos Mexicanos
Petro Star, Inc.
Petro-Canada [PCZ]
Petrol Ofisi A.S.
Petroleum Development Corporation [PETD]
Petroleum Marketers, Inc.
Petroleum Place, Inc.
Petroliam Nasional Berhad
Petron Corporation
Petroplus Holdings AG
Placid Refining Company LLC
Polski Koncern Naftowy ORLEN SA
Preem Petroleum AB
ProLiance Energy, LLC
PSEG Energy Resources and Trade, LLC
PTT Public Company Limited

Red Apple Group, Inc. Reliance Industries Limited
Royal Dutch Shell plc
RWE Energy AG
RWE npower

S-Oil Corporation San Joaquin Refining Co., Inc.
Sapp Bros Petroleum, Inc.
Sasol Limited [SSL]
Saudi Arabian Oil Company
Shell Aviation Limited
Shell International Trading and Shipping Company Limited
Shell Martinez Refinery
Shell Oil Company
Shell Oil Products US
Shijiazhuang Refining-Chemical Co., Ltd.
Showa Shell Sekiyu K.K.
Sibir Energy plc
Sinclair Oil Corporation
Singapore Petroleum Company Limited
Sinopec Zhenhai Refining & Chemical Company Limited
SK Energy Co., Ltd.
SK Group
SmartestEnergy Limited
Sonatrach
Statoil Marketing & Trading (US) Inc.
Sterling Planet, Inc.
Strategic Energy, L.L.C.
SUEZ Energy Resources NA
SulphCo, Inc. [SUF]
Sunoco, Inc. [SUN]

Tauber Oil Company Taylor NGL Limited Partnership
Tesoro Alaska Company
Tesoro Corporation [TSO]
Tesoro Hawaii Corporation
Tesoro Refining and Marketing Company
Tetco Incorporated
Thai Oil Public Company Limited [TOIPF.PK]
The Bangchak Petroleum Public Company Limited
Tidal Energy Marketing, Inc.
TNP Enterprises, Inc.
TonenGeneral Sekiyu K.K.
TOTAL Italia S.p.A.
TOTAL UK Limited
Transammonia, Inc.
Turkish Petroleum Refineries Corporation

UNIPETROL, a.s. United Refining Company

Valero Energy Corporation [VLO] Vietnam National Petroleum Corporation

Western Refining, Inc. [WNR] World Energy Solutions, Inc.
World Point Terminals, Inc.

YPF S.A. [YPF]