Energy Finders Inc.

1286664 Alberta Ltd. 30

1289307 Alberta Ltd. 30

3i 41

A.G. Edwards 44

Aban Offshore Ltd. 41, 46

Aban Offshore Ltd. 46

Abu Dhabi National Energy Co. 34

Acumen Capital Finance Partners Ltd. 44

Acusphere Inc. 36

Adamant Energy Inc. 15

Adkins RL Corp. 15

Admiral Bay Resources Inc. 9

Adobe Drilling Services Ltd 46

Adobe Trucking Inc. 46

Advanced Explorations Inc. 35, 45

AIC-Petrofi Ltd. 32

Albrecht & Associates 17

Allegro Investments Inc. 51

Allis-Chalmers Energy Inc. 39, 44, 46

ALM Trust Properties LLC 28

Ambient Wells Services Inc. 41

Amegy Bank 46

American Energy Advisors 17

American International Industries Inc. 46

American Natural Energy Corp. 25

American Natural Energy Corp. 46

American Pride Energy Inc. 24

Ames 9

Amwes Exploration LLC 48

Anadarko Petroleum Corp. 2, 25, 26, 37, 38, 47, 49, 51, 53

Analytical Surveys Inc. 22

Anderson Oil & Gas Inc. 17, 23

Antelope Energy Co. LLC 53

Apache 12

Apollo Resources International Inc. 45

Appalachian Energy Corp. 22

Arawak Energy Corp. 34

Arch Creek Advisors LLC 43

Arctic Transportation Ltd. 42

Arena Resources Inc. 35

Arrowhead Energy Ltd. 32, 46

Artumas Group Inc. 37

Ashmore Energy International 42

ASI Energy 22

Asia Resources Oil Ltd. 35

Aspect Energy 38

Atlas Resources Inc. 48

ATP Oil & Gas Corp. 22

Attica Alternative Investment Fund Ltd. 42

Aurora Energy Ltd. 47

Austral Pacific Energy Ltd. 32, 46

Avalon Oil & Gas Inc. 23, 35

Avondale Resources Corp. 23

B&L Exploration LLC 38

Badger Income Fund 46

Bainbridge Capital 17

BaiTex LLC 34

Bank of America 25

Barclays Capital 56

Baseline Oil & Gas Corp. 23, 35

Basic Energy Services Inc. 39

Basic Marine Services Inc. 39

Baxter Bold & Co. 17

Bear Petroleum Inc. 26

Bearbeech Capital Partners Corp. 45

Bedford Energy Inc. 23

Berry Petroleum Co. 9, 35

Best AeroNet Ltd. 37

Best Jets Group of Cos. 37

Beta Drilling AS 41

BG 53

BG International NSW Ltd. 18

BHP Billiton 37

BHS Inc. 39, 46

Big Sky Energy Corp. 35

Bill Barrett Corp. 9, 23, 35, 52, 53

Biloxi Marsh Lands Corp. 38

Black Dragon Resource Cos. Inc. 24, 35

Black Gold Trading 17

Blackmont Capital Inc. 45

Blackpool Exploration Ltd. 45

BlackRock Ventures 3

Blackstone Group 17

BLX Inc. 47

BMO Nesbitt Burns Inc. 44

BNP Paribas 32, 45,

Bounty Development Ltd. 30

BP Plc 34, 36

BPZ Energy Inc. 38, 44, 46

Brand Energy & Infrastructure Services Inc. 46

Brockton Capital Corp. 24, 36, 44

Bronco Drilling Co. Inc. 39

Buckley & Boots 17

Burks Oil & Gas Properties 17

Burlington Resources 2

BXP Partners 9

C Energy Inc. 9

C.K. Cooper & Co. 44, 46

Cabot Oil & Gas Corp. 48

Cadillac Ventures Inc. 45

Cairn India 3

Callon 12

Cambridge Energy Research Associates 42

Cambridge Resources Corp. 24

Cameron 42

Canaccord Capital Corp. 44

Canaccord Enermarket 17

Canadian Imperial Venture Corp. 36

Canadian Natural Resources Ltd. 15

Canadian Oil Sands Ltd. 30

Canadian Superior Energy Inc. 36

Candover Investments Plc 41

Capcis Ltd. 41

Capital Energy Advisors Inc. 17

Carlyle/Riverstone Global Energy and Power Funds 35

Carrizo Oil & Gas Inc. 46

Caspian Gas Corp. 36

Caspian International Oil Corp. 36

Cathedral Energy Services Trust 37

CCS Income Trust 45

CDS Oil Co. 23

CEC Energy Consultants 17

Centaurus Gulf of Mexico LLC 28

Central Operating 13

Central Petroleum Ltd. 18

Centurion Energy International Inc. 32

Century Petroleum Corp. 44

Chaparral Energy Inc. 2, 46, 50

CHC Energy LLC 49

Cheetah Oil and Gas Ltd. 36

Chesapeake Appalachia LLC 47, 48

Chesapeake Energy Corp. 4, 36, 47, 48, 50, 51

Chevron Corp. 9, 34

Chief Oil & Gas LLC 4

China International Trust & Investment Corp. 34

China National Petroleum Corp. 32

CIBC World Markets Inc. 17, 30, 44

Cidra Corp. 42

Cimarex Energy Co. 53

CIS-Oklahoma Inc. 40

Citigroup Corporate and Investment Banking 44

Citigroup 1

City Capital Corp. 24

Clarion Fernandez 53

Claron Ventures Inc. 33, 36

Clear Fork Pipeline Co. 25

Clear Water Inc. 51

CNPC International (Chad) Ltd. 32

Compagnie Générale de Géophysique 39, 43

Compagnie Generale de Geophysique-Veritas 42, 43

Compass Advisers 17

ConocoPhillips Co. 2, 26, 30, 38, 46, 51

Consolidated Oil Well Services Inc. 40

Constellation Energy Group Inc. 36

Contango Oil & Gas Co. 25

Costa Energy Inc. 44

County Line Energy Corp. 45

Crawford Energy Operating Co. 49

Credit Suisse 25, 27, 38, 39, 45, 46

Crimson Exploration Inc. 35

Crosstex Energy 4

CTI Capital Inc. 45

Cubic Energy Inc. 45

Cygnus Oil and Gas Corp. 36

D&D Securities Co. 44

Dalbo Holdings Inc. 39, 46

Damascus Energy Inc. 30, 45

Dana Gas PJSC 32

Dana Petroleum (E&P) Ltd. 33

Daugherty Petroleum Inc. 48

David R. Hill 47

Davis Tool Co. Inc. 39

Dawn Trucking Corp. 39, 46

Daybreak Oil and Gas Inc. 36

Daytona Energy Corp. 36

Deerfield Energy LLC 24

Deloitte 56

Delphic Oil and Gas LLC 27

Desjardins Securities Inc. 44

Deutsche Bank Securities Inc. 44, 46

Devon Energy Corp. 4, 15, 36

Discovery Exploration 9

DnB NOR Markets 44

Dockwise Transportation NV 43

Dolphin Energy Corp. 28

Dominion Resources Inc. 25

Double Eagle Petroleum Co. 44

Dresser-Rand Group Inc. 42

Dril-Quip Inc. 42

Dual Drilling Co. 42

Dual Exploration 30

Dundee Securities Corp. 44

Dune Energy Inc. 25, 46

Dyno Energy Ltd. 37

E&P Investments GmbH 44

Eagle Oil and Gas 15

Eagle Well Service Inc. 39

Easterday Exploration Inc. 52

Eastern American Energy Corp. 48

Edge Petroleum Corp. 25, 44

EnCana Corp. 32, 35, 38, 48

Enco Gas Ltd. 15

Encore Acquisition Co. 25

EnCore Oil Plc 33

Endeavour International Corp. 36, 53

Energen Corp. 25

Energy and Environmental Analysis Inc. 35

Energy Auction Place 17

Energy Capital Solutions 17, 44

Energy Equity Resources Ltd. 32

Energy Exchange 17

Energy Exploration Technologies Inc. 40

Energy Finders Inc. 25, 27

Energy Listings 12, 17

Energy Solutions Petrochemicals Resources Inc. 40

Energy Spectrum Advisors Inc. 12, 17

EnergyNet.com 9, 11, 12, 17

EnerNorth Industries Inc. 38

EnerVest Management Partners Ltd. 26

ENI SPA 33, 53

Ensco International 42

Ensley Properties Inc. 17

EOG 4

Eon Rhurgas 18

Epco Inc. 36

Epic Capital Group Inc. 26

Equipment 2000 40

Equitable Production Co. 48

ERHC Energy Inc. 36

Ernst & Young Corp Finance 17

Ervin Anderson & Co. JV 17

Eschelon Energy Partners 56

Escondido Resources GP LLC 49

ESP Development Inc. 50

Esso Exploration and Production UK Ltd. 18

E-T Energy Ltd. 36

EV Energy Partners LP 26

Excell Services Inc. 43

Exco Resources Inc. 26, 28

Exploration Inc. 47

Exxel Energy Corp. 36

ExxonMobil 2, 5, 12, 41

Ferris, Baker Watts Inc. 44

FieldPoint Petroleum Corp. 26

First Energy Generation Corp. 47

FirstEnergy Capital Corp. 32, 44

Fishermans Petroleum 18

Five States Energy Co. LLC 26

Flair Petroleum Corp. 26

Flotek Industries Inc. 40, 46

FMC Technologies Inc. 42

Foothills Resources Inc. 36

Forest Oil Corp. 11, 26, 27

Fort Scott Methane Partners LLC 11

Fortis Securities 44

Fortuna Energy Inc. 47

Foundation Energy 17

Friedman, Billings, Ramsey & Co. Inc. 17, 44

Frontier Energy Corp. 36

Frontline Ltd. 43

Galaxy Energy Corp. 28

Galleon Energy Inc. 36

Gastem 45

Gaz de France SA 53

Gazprom 34

GE Energy Financial Services 46

GE Oil & Gas 41

Gendis Inc. 46

General Electric 41, 42

General Mineral Development 12

General Research GmbH 38

Geodynamic Solutions Inc. 40, 42

Geofocus Corp. 15

Geological Data Services Inc. 40

Geospatial Training Services LLC 40, 42

GeoSurveys Inc. 50

Global Resource Corp. 36

GMP Securities LP 44

Goldman Sachs 27, 39

Goodrich Petroleum Corp. 27, 36

Goshen Energy Inc. 25

Graceland Resources Ltd. 30

Gran Tierra Energy Inc. 35, 37

Granby Oil and Gas Plc 33

Grant Prideco Inc. 42

Graves & Co. 17

Grayson Petroleum Co. 51

Great Valley Drilling Co. LLC 40

Great Western Drilling Co. 56

Greenhill Capital Partners 17

Griffis & Associates 17

Grove Energy Ltd. 33

Growth Capital Partners 17

Grupo Creatica SA de CV 41

GT International Inc. 17

Gulftex Operating Inc. 29

Gunnison Energy Corp. 36

Habanero Resources Inc. 30

Hall Houston 56

Halliburton 40

Hallwood Energy 4

Hallwood Petroleum LLC 49

Hannon-Westwood 17

Hanover Compressor Co. 46

Hanwei Energy Services Corp. 45

Hardman Resources Ltd. 53

Hardy Oil 41

Harken Energy Corp. 30

Harrison Lovegrove LP 17

HBK Resources 36

Helix Energy Solutions 37

Hercules Offshore Inc. 37, 42

High Arctic Energy Services Trust 37

High Plains Petroleum Corp. 52

Hillwood Co. 5

Holmes Exploration LLC 51

Holt & Company 17

Horizon North Logistics Inc. 42

Howell Oil & Gas 11

HSBC Securities (Canada) Inc. 44

Hydro Gulf of Mexico LLC 49

ICF International 35

ICI Solutions Inc. 41

ICICI Bank Ltd. 41

Ignis Petroleum Group Inc. 37

IHS Co. 40, 42

Imperial Oil Resources 30, 37

IndigoPool 13, 17, 18

Industrial Support Ltd. 35

Infinity Energy Resources Inc. 40, 46

Innova Exploration Ltd. 35

International Hydrocarbons Corp. 32

International TME Resources Inc. 27

InterOil Corp. 37, 53

Intertek Group Plc 41

J.A. Rohr Industries 11

J.M. Huber Corp. 38

J.P. Morgan Securities Inc. 44

Jana Partners LLC 26

Jed Oil Inc. 37

Jefferies Randall & Dewey 17, 26

Jerry Hess Operating Co. 51

JetStar Consolidated Holdings Inc. 39

JMG Exploration Inc. 11

John S. Herold Inc. 2, 56

Johnson Rice & Co. LLC 44

JP Morgan Chase Bank NA 26, 46

JP Morgan 17, 41

Jura Energy Corp. 35

J-W Operating Co. 12, 43

KazMunaiGas 3, 34

Kentex Petroleum Inc. 27

Kentucky Reserves LLC 24

Kerr-McGee Corp. 2, 51, 53

Key Brokerage Inc. 34

Key Energy Services Inc. 37

KeyBanc Capital Markets 44

Kobayashi Partners Ltd. 16, 35

Kodiak Energy Inc. 30, 44, 52

Kondaneftegaz LLC 34

Kootenay Energy Inc. 45

Kosmos Energy 32

Krog Partners LLC 23

Lake Eugenie Land & Development Inc. 38

LandWorks Inc. 40, 42

Lantana Oil & Gas Partners 17

Laredo NB Energy Advisors 17

Lario Oil & Gas Co. 27

Legacy Reserves LP 44

Lehman Brothers 1, 25, 27

Lime Rock Partners 35

Lindsey Energy and Natural Resources 36

Linn Energy LLC 56

Longbow LLC 52

Loudon Operating 12

Lucas Energy Inc. 27

Lukoil 2

LVW Operating Co. 12

Macquarie Bank Ltd. 46

Madagascar Oil 56

Maersk 18

Magnum D'Or Resources Inc. 37

Mancal Energy Inc. 12, 16

Manti Resources Inc. 15, 49

Marathon Oil Corp. 56

Marshall Oil/Wuellner Oil 12

Mart Resources Inc. 37

Matris Exploration Co. 36

McDouall Stuart Corporate Finance Ltd. 33

Meagher Oil & Gas Properties Inc. 9, 11, 17

Medco Energi US LLC 28

Merrill Lynch & Co. 44

Merrill Lynch Commodities 53

Merrill Lynch Petrie Divestiture Advs. 17

Micron Enviro Systems Inc. 30

Mid-Con Energy Corp. 37

Mitchell Energy Advisors 5, 17

Mitsubishi Corp. 34

Mitsui & Co. Ltd. 34

Mocal Energy Ltd. 30

MOL 34

Moncla Cos. 41

Montreal Beneficial Inc. 24

Morgan Elizabeth Miles Trust 28

Morgan Keegan & Co. Inc. 40, 44

Morgan Stanley & Co. Inc. 44, 46

Moyes & Co. Inc. 17

Mullen Group Income Fund 42

Murphy Exploration and Production Co. USA 37

Murphy Oil Co. Ltd. 30

Mystique Energy Inc. 16

Nabors Industries Ltd. 41

Nadel & Gussman Rockies LLC 52

National Bank Financial Inc. 32, 44

National Bank of Canada 46

National Oilwell Varco Inc. 36, 37, 40

Nations Energy Co. Ltd. 34

Native American Energy Group Inc. 44

Natural Gas Services Group Inc. 37

New Atlantis Oil and Exploration LLC 12

New Century Exploration 12

New Frontier Energy Inc. 28

Newfield Exploration Co. 51

Newfield 12

Newpark Resources Inc. 46

Nexen Oil Sands Partnership 30

NGAS Resources 48

Nido Petroleum Ltd. 33

Noble & Cantrell 12

Noble Energy 13, 28, 30

Nordic Oil and Gas Ltd. 45, 46

Norsk Hydro ASA 18, 33, 37, 49, 53

North West Oil Group 46

Northern Hunter Energy Inc. 30

Northern Oil & Gas Inc. 27

Northern Plains Capital Corp. 42

Northern Taiga Neftegas Ltd. 34

Northway Exploration Ltd. 35

North-West Oil Group 34

Norton Transport Inc. 40

NQL Energy Services Inc. 40, 42

O'Ryan Oil & Gas 13

Occidental Petroleum Corp. 35

Octagon Capital Corp. 17, 44

Oil & Gas Rental Services Inc. 39, 46

Oilexchange.com 17

OilProperties.com 17

Omda Oil and Gas Inc. 37

Omimex Energy Inc. 47

Oppenheimer & Co. Inc. 44

Opti Canada Inc. 45

Oriental Bank of Commerce 41

Orion Securities Inc. 32

ORX Resources Inc. 37

Outback Energy Corp. 33

Oxy USA WTP LP 50

Pacific Energy Resources Ltd. 44

Pacific Rodera Energy Inc. 45

PanTerra Resource Corp. 37

Parker Drilling Co. 39

Parker Drilling Offshore USA LLC 39

Patch International Inc. 30, 37, 45

Patriot Exploration Co. 45

Patterson Petroleum LP 51

Peak Concepts 12

PEC Minerals 5

Pengrowth Energy Trust 16

Penn Virginia Corp. 37

Peoples Energy 37

PeruPetro SA 35

Peters & Co. Ltd. 32, 41

Petrie Parkman & Co. 44

Petro Prospects Marketing 17

Petro Summit 18

PetroAdvisor SA 17

Petrobridge Investment Management LLC 1

Petro-Canada 30, 52

PetroCumarebo 53

PetroFalcon Corp. 53

PetroGrowth Advisors 17

PetroHawk Energy Corp. 27

Petro-Hunt LLC 52

PetroHunter Energy Corp. 28, 33

Petroleos de Venezuela SA 53

Petroleum Development Corp. 28, 53

Petroleum Exploration (Pvt.) Ltd. 35

Petronas 18

PetroSales 12, 17

PetroSun Drilling Inc. 28

Peyto Energy Trust 37

Peyto Exploration & Development Corp. 37

Phoenix Associates Land Syndicate 37, 42

Pioneer Drilling Co. 42

Platina Energy Group Inc. 22

Playa Oil and Gas 56

PLS Inc. 9, 11, 12, 15, 17

Pogo Producing Co. 52

Post Oak Energy Capital 56

PRB Energy Inc. 28, 44, 46

Pride International Inc. 37, 42

PrimeWest Energy Inc. 37, 44

Primexx Energy Partners Ltd. 12

Pritchard Capital Partners LLC 44

Production Enhancement Group Inc. 41

Pro-Formance 40, 43

Prospect Energy Corp. 44

PT Ephindo 32

PT MedcoEnergi Internasional TBK 28

Punjab National Bank 41

Pyramid Energy International Inc. 35

Q Consolidated Oil Well Services LLC 40

Quantum Energy Partners 35

Quicksilver Resources Inc. 38

R.B. Wiesen & Co. 12

Rally Energy Corp. 30

Rancher Energy Corp. 28, 38, 44

Range Resources Corp. 12

Ranger Canyon Energy Inc. 45

Raydon Exploration Inc. 50

Raymond James & Associates Inc. 44

RBC Capital Markets Corp. 9, 17, 39, 44, 45

RBC Dominion Securities Inc. 44

RBDR LLC 52

RBS Greenwich Capital 45

Red Deer River Energy Corp. 37

Reef Energy Resources LLC 17

Repsol YPF SA 18

Resolve Energy Inc. 45

Richards Oil & Gas Ltd. 45

Richardson Barr & Co. 17

Rim Operating 12

Ritchie Enterprises 13

Ritchie Exploration Inc. 50

Riviera Energy Corp. 12, 17

RJI Inc. 38

Robert L. Bayless Producer LLC 36

Rolland Energy Inc. 30, 45

Rosetta Resources Inc. 38

Rosneft 3

Rothschild 39

Roundtree & Associates 50

Rowan Cos. Inc. 42

Roxar 42

Royal Dutch Shell Plc 34

Royale Energy Inc. 28

Rundle Energy Partners 15, 17, 35

RusOil LLC 34

Sakhalin Energy Investment Co. Ltd. 34

Samson et al. 13

Samson Resources Co. 47

SandRidge Energy Inc. 38

Santos Ltd. 13

Saudi Aramco 36

Sayer Energy Advisors 3, 17

Scotia Capital Inc. 44, 45

Scotia Waterous Inc. 9, 12, 13, 15, 17 18

SCS Corp. 38

Sealift Ltd. 43

Seeco Inc. 50

Seitel Inc. 46

Sempra Energy 5

Serica Energy Plc 32, 53

Sharp Image Energy Inc. 51

Shell Oil 5, 13, 18, 41

Shumate Industries Inc. 45

Siberian Energy Group Inc. 34

Sierra Energy Inc. 37

Silverwing Energy Inc. 46

Simmons & Co. International 39, 44

Simplex Energy Solutions 9, 13, 15, 17

Sinvest ASA 41, 46

Skipping Stone 17

Smith Production Inc. 44

Smith Rea Energy Ltd. 41

Société Générale 45

Societe Nationale des Hydrocarbones 32

Solana Petroleum Exploration 35

Sonerra Resources Corp. 48

Sonoran Energy Inc. 38

Source Petroleum Inc. 38

Southwestern Energy 50

Spinnaker Exploration Co. 49

Spitfire Energy Ltd. 30

Sprott Securities Inc. 44

St. Mary Land & Exploration Co. 28

Stallion Oilfield Services Ltd. 40

Standard & Poor's Ratings Services 27, 34

Stanolind Oil & Gas Corp. 13

Star Energy 38

Starling Enterprises 42

State Bank of India 41

Statoil ASA 33, 37

Stellar Energy Advisors Ltd. 17

Stifel Nicolaus & Co. Inc. 44

Stone Energy 12, 13

StoneBridge Merchant Capital Corp. 37

Storm Cat Energy Corp. 38

Strategic Decisions Group 42

Stylus Energy Inc. 44

Suemaur Exploration & Production LLC 15

Sui Northern Gas Pipeline Ltd. 35

SulphCo Inc. 42

Swanberg Bros. Trucking LP 36

Swift Energy Co. 29

Syncrude Canada Ltd. 30

Syntroleum Corp. 32

Talisman Energy Inc. 18, 30, 34, 46, 47

Taqa Bratani Ltd. 34

Tarkim Bio-Ethanol Production Group 35

TBX Resources Inc. 29

TD Securities 30, 44, 45

Teal Supply Co. 40

Technip 43

Teekay Offshore Partners LP 44

Terax Energy 15

Tesco Corp. 43

Teton Energy Corp. 28, 29

The Bank of Nova Scotia 45

The Canyon Services Group Inc. 43

The Dillard Anderson Group 17

The Houston Exploration Co. 26, 49

The Oil & Gas Asset Clearinghouse 12, 13, 15, 17

The Oil Auction.com 17

The Royal Bank of Scotland Plc 45

The Scotia Group Inc. 17

The Wood Group 40

Thunder River Energy Inc. 30

TNK-BP 34

Tongue River Royalties 15

Toronto Dominion Bank 45

Touradji Capital Management LP 56

TransAtlantic Petroleum Corp. 25, 38

TransCanada PipeLines 43

Transneft 34

Transocean Inc. 38

Tri Global Holdings LLC 22

Tri-C Resources Inc. 15, 49

Trinity Sands Energy LLC 24

Tristone Capital Inc. 12, 16, 17, 25, 31

Triumph Drilling Tools Inc. 40, 46

Tri-Valley Corp. 40

True Energy Trust 30

Truestar Barnett LLC 15

TrueStar Petroleum Corp. 46

Tudor Corp. Ltd. 32

Tullow Oil Plc 32

UBS Securities LLC 46

Umitek Ltd 41

Unbridled Energy Corp. 45

Union Seaboard Corp. 15

United Tech Consulting Inc. 42

Universal Energy Corp. 38

Universal Property Development and Acquisition Corp. 41

Upstream Advisors LP 17

Ute Energy 23

UTI Bank Ltd. 46

Vala de Mexico 41

Vamos 15

Vantage Energy LLC 35

Vanyoganneft 35

Vastar Resources 35

Venture Drilling AS 41

Veritas DGC Inc. 39, 42, 43

Veritas Real Estate Investments 37

Vetco Aibel 41

Vetco Gray 41

VF-NEFT Development LLC 34

Victory Energy Corp. 38

Vinccler Oil and Gas CA 53

Virgo Energy Ltd. 33

Vision Energy Advisors 17

Volga-Neft 38

W&T Offshore 12

W.G. Nielsen & Co. 17, 46

Wachovia Capital Markets LLC 17, 44

Walter Oil & Gas Corp. 49

Wavefront Energy and Environmental Services Inc. 41

Weatherford International Ltd. 38, 42

Weisser, Johnson & Co. 17

Well Renewal Inc. 40, 43

WellDynamics Inc. 40

Wellogix 37

Wells Fargo Commercial Banking 40, 46

Wells Fargo Energy Advisors 17

Wescorp Energy Inc. 45

Whiting Petroleum Corp. 30, 52

Willbros Group Inc. 43

Winstar Resources Ltd. 38, 45

Woodside Petroleum Ltd. 18

XCL Ltd. 36

XTO Energy Inc. 48

YPF SA 18

Zion Oil & Gas Inc. 38, 45