Standard Reports

U.S Rig Count

Texas Rig Count

Louisiana Rig Count

Oklahoma Rig Count

Custom Reports

Country:	UNITED STATES
State:	All States ALABAMA ALASKA ARIZONA ARKANSAS CALIFORNIA COLORADO CONNECTICUT DELAWARE DISTRICT OF COLUMBIA FLORIDA GEORGIA HAWAII IDAHO ILLINOIS INDIANA IOWA KANSAS KENTUCKY LOUISIANA MAINE MARYLAND MASSACHUSETTS MICHIGAN MINNESOTA MISSISSIPPI MISSOURI MONTANA NEBRASKA NEVADA NEW HAMPSHIRE NEW JERSEY NEW MEXICO NEW YORK NORTH CAROLINA NORTH DAKOTA OHIO OKLAHOMA OREGON PENNSYLVANIA PUERTO RICO RHODE ISLAND SOUTH CAROLINA SOUTH DAKOTA TENNESSEE TEXAS UTAH VERMONT VIRGINIA WASHINGTON WEST VIRGINIA WISCONSIN WYOMING	County:	All Counties	TX RR Dist:	All Districts
Both (Land & Offshore)    Land    Offshore
MMS Areas:	All MMS Areas ADAK ADAMS AFOGNAK AKUTAN AKUTAN NORTH ALAMINOS CANYON ALBATROSS BANK ALEUTIAN BASIN ALEUTIAN TRENCH ALSEK VALLEY AMCHITKA PASS AMERY TERRACE AMLIA KNOLL AMUKTA PASS ANDROS APALACHICOLA ARENA CANYON ARGUELLO FAN ASTORIA CANYON ASTORIA FAN ATKA ATTU ATWATER VALLEY BAHAMAS BAIRD INLET BAKER FAN BALANUS SEAMOUNT BALTIMORE RISE BANGOR BANKS BARKLEY CANYON BARROW BARROW CANYON BARTER ISLAND BATH BAY MARCHAND BEAR SEAMOUNT BEAUFORT BEAUFORT TERRACE BEECHEY POINT BEECHEY POINT NORTH BERING GLACIER BERING SEA BERING STRAIT BIMINI BLACK BLAKE ESCARPMENT BLAKE SPUR BLANCO SADDLE BLOCK CANYON BLOCK ISLAND SHELF BLYING SOUND BODEGA CANYON BOSSLER BOSTON BOWERS BANK BOWERS RIDGE BOWERS SEAMOUNT BRAZOS BRAZOS SOUTH BRETON SOUND BRISTOL BAY BRISTOL BAY NORTH BROWNS BANK BRUNSWICK BUSHNELL KNOLL CAMPECHE ESCARPMENT CANADA BASIN CANADA BASIN WEST CAPE BLANCO CAPE DENBIGH CAPE DISAPPOINTMENT WEST CAPE FEAR CAPE FLATTERY CAPE MENDENHALL CAPE MENDENHALL WEST CAPE NEWENHAM CAPE NEWENHAM WEST CAPE SEPPINGS CAPE SEPPINGS WEST CASCADIA BASIN CASCADIA GAP CASHES LEDGE CHAGULAK CANYON CHANDELEUR CHANDELEUR EAST CHARLOTTE HARBOR CHATHAM CHIGNIK CHINCOTEAGUE CHIRIKOF ISLAND CHIRIKOF SEAMOUNT CHUKCHI SEA COLD BAY COOS BAY COPALIS BEACH WEST CORDOVA CORPUS CHRISTI CORSAIR CANYON CRAIG CRESCENT CITY CURRITUCK SOUND DAISY BANK DALL SEAMOUNT DAYTONA BEACH DE LONG MOUNTAINS DE SOTO CANYON DEASE INLET DELGADA FAN DEMARCATION POINT DERICKSON SEAMOUNT DESTIN DOME DIXON ENTRANCE DRY TORTUGAS EAST BREAKS EAST CAMERON EAST CAMERON SOUTH EASTPORT ELY SEAMOUNT ESCANABA RIDGE ESCANABA TROUGH EUGENE ISLAND EUGENE ISLAND SOUTH EUREKA EVANS EWING BANK FALSE PASS FLAXMAN ISLAND FLAXMAN ISLAND NORTH FLORIDA MIDDLE GROUND FLORIDA PLAIN FT. PIERCE GAINSVILLE GALVESTON GALVESTON SOUTH GAMBELL GAMBELL SOUTH GARDEN BANKS GARELOI ISLAND GEORGETOWN GODDARD GOODNEWS GRAND ISLE GRAND ISLE SOUTH GREEN CANYON HAGEMEISTER ISLAND HANNA SHOAL HARRINGTON HILL HARRISON BAY HARRISON BAY NORTH HARTFORD HATTERAS RIDGE HECETA BANK HEEZEN PLATEAU HENDERSON HIGH ISLAND HIGH ISLAND EAST HIGH ISLAND EAST AND SOUTH HIGH ISLAND SOUTH HOOPER BAY HOOPER BAY WEST HOQUIAM HOWELL HOOK HOYT HILLS HUDSON CANYON HYDROGRAPHER CANYON HYMAN ICY BAY ILIAMNA JACKSONVILLE JAMES ISLAND JASPER SEAMOUNT JONES JORDAN BASIN JUNEAU KANAGA BASIN KARLUK KARO KEATHLEY CANYON KENAI KETCHICAN KEY WEST KISKA VOLCANO KLAMATH RIDGE KODIAK KODIAK EAST KOROVIN CANYON KOTZEBUE KRESTA POINT KUSKOKWIM BAY KWIGUK LANIER LIPPOLD LITTLE DIOMEDE ISLAND LLOYD RIDGE LONG BEACH LOS ANGELES LUND LUND SOUTH LYDONIA CANYON MACKENZIE CANYON MACKENZIE CANYON NORTH MAIN PASS MAIN PASS SOUTH AND EAST MANTEO MARMER MATAGORDA ISLAND MAURY DEEP MC ALINDEN SPUR MEADE RIVER MIAMI MIDDLETON ISLAND MISSISSIPPI CANYON MITROFANIA ISLAND MOBILE MONTEREY MONTEREY FAN MT. FAIRWEATHER MT. KATMAI MULLER MURRAY CANYON MUSTANG ISLAND MUSTANG ISLAND EAST NAKNEK NEW YORK NEWARK NEWPORT VALLEY NH10-02 NH18-03 NH18-05 NI09-03 NI10-04 NI10-07 NI10-08 NI10-10 NI10-11 NI19-07 NITINAT FAN NJ09-02 NJ09-09 NJ09-12 NL01-01 NL60-03 NM01-04 NM01-05 NM01-06 NM01-07 NM01-08 NM02-03 NM02-04 NM02-05 NM02-06 NM02-07 NM02-08 NM03-01 NM03-02 NM03-03 NM03-04 NM03-05 NM04-01 NM04-02 NM04-03 NM58-02 NM58-04 NM59-01 NM59-02 NM59-03 NM59-04 NM59-05 NM59-06 NM60-03 NM60-04 NM60-05 NM60-06 NM60-07 NM60-08 NN01-01 NN01-02 NN03-07 NN04-08 NN05-02 NN05-04 NN05-05 NN05-06 NN05-07 NN05-08 NN06-01 NN06-02 NN06-03 NN06-05 NN07-01 NN07-02 NN07-04 NN07-06 NN08-03 NN08-05 NN59-02 NN59-03 NN59-04 NN59-05 NN59-07 NN60-01 NN60-02 NN60-05 NO01-05 NO01-07 NO01-08 NO06-07 NO07-03 NO07-05 NO07-06 NO07-08 NO59-08 NO60-03 NO60-04 NO60-05 NO60-06 NO60-07 NO60-08 NOATAK NOME NORTH PADRE ISLAND NORTH PADRE ISLAND EAST NORTON SOUND NOYO CANYON NP01-02 NQ02-07 NR03-03 NR07-01 NR07-02 NS02-04 NS02-06 NS02-08 NS03-03 NS03-04 NS03-05 NS03-06 NS03-07 NS03-08 NS04-03 NS04-04 NS04-05 NS04-06 NS04-07 NS04-08 NS05-03 NS05-04 NS05-05 NS05-06 NS06-03 NS06-05 NS06-06 NS06-08 NS07-05 NS07-06 NS07-08 NS08-05 NS08-07 NUNIVAK ISLAND NUNIVAK ISLAND WEST OKMUK CANYON ORLANDO PARKS SEAMOUNT PATTON RIDGE PENSACOLA PERVENETS CANYON PERVENETS CANYON EAST PILLSBURY PIONEER ESCARPMENT PIONEER RIDGE POCHNOI TROUGH POINT HOPE POINT HOPE WEST POINT LAY POINT LAY WEST PORT ALEXANDER PORT ISABEL PORTLAND PORTLOCK BANK POSEY POWELL PRATT SEAMOUNT PRESIDENT JACKSON SEAMOUNT PRIBILOF CANYON PRIBILOF CANYON WEST PRINCE RUPERT PROVIDENCE PULLEY RIDGE RANKIN RAT ISLANDS REDDING RICHARDSON HILLS ROCKY MOUNT ROMPIDAS LEDGE RUDE CANYON RUSSELL SABINE PASS SABINE PASS - LA SALEM SALISBURY SAMALGA ISLAND SAN CLEMENTE ISLAND SAN DIEGO SAN FRANCISCO SAN LUIS OBISPO SANTA ANA SANTA CRUZ SANTA MARIA SANTA ROSA SANTA ROSA ISLAND SAULSBURY SAULSBURY WEST SAVANNAH SEATTLE SEGUAM SELAWIK SELDOVIA SEWARD SHEMYA ISLAND SHIP SHOAL SHIP SHOAL SOUTH SHISHMAREF SHUMAGIN BANK SIGSBEE ESCARPMENT SIMEONOF ISLAND SIRIUS SEAMOUNT SITKA SOLIVIK ISLAND SOLOMON SOUTH MARSH ISLAND SOUTH MARSH ISLAND NORTH SOUTH MARSH ISLAND SOUTH SOUTH PADRE ISLAND SOUTH PADRE ISLAND EAST SOUTH PASS SOUTH PASS SOUTH AND EAST SOUTH PELTO SOUTH TIMBALIER SOUTH TIMBALIER SOUTH SOUTHEAST CAPE ST. GEORGE ST. GEORGE CANYON ST. GEORGE EAST ST. LAWRENCE ST. MATTHEW ST. MATTHEW CANYON ST. MATTHEW NORTH ST. MATTHEW SOUTH ST. MATTHEW WEST ST. MICHAEL ST. PAUL ST. PAUL EAST ST. PAUL NORTH ST. PAUL SPUR ST. PETERSBURG STEEL VENDOR SEAMOUNT STEPOVAK BAY STETSON MESA STEWART STUDDS SUMDUM SUR CANYON SURVEYOR SEACHANNEL SUTWIK ISLAND TANEY SEAMOUNT TARPON SPRINGS TAYLOR TELLER TESHEKPUK THE ELBOW THE RAMPART THOMPSON SEAMOUNT TIBBET TILLAMOOK SEACHANNEL TISON TORTUGAS VALLEY TRINITY ISLANDS UCHUPI UGASHIK UGASHIK WEST UKIAH UKIVOK ULM PLATEAU UMNAK UNALAKLEET UNALASKA UNIMAK SEAMOUNT VANCE SEAMOUNT VANCOUVER VEATCH CANYON VELERO BASIN VERMILION VERMILION SOUTH VERNON BASIN VIOSCA KNOLL WAINWRIGHT WALKER CAY WALKER RIDGE WALLS KNOLL WEED WEST CAMERON WEST CAMERON SOUTH WEST CAMERON WEST WEST DELTA WEST DELTA SOUTH WEST PALM BEACH WESTFALL SEAMOUNT WILMINGTON WILMINGTON CANYON WILMINGTON VALLEY WITTMAN WRAIGHT YAKUTAT ZHEMCHUG CANYON ZHEMCHUG SPUR	Basin:	All Basins AAIUN-TARFAYA BASIN ABU GHARADIQ BASIN ACRE BASIN ADANA/SIVAS ADELAIDE & KANMANTOO FOLD BELTS ADIRONDACK UPLIFT ADMIRALTY ARCH ADRIATIC BASIN AEGEAN AFGHAN AFGHAN-TAJIK BASIN AKITA BASIN ALAKOL BASIN ALASHAN YINSHAN FOLD BELT ALAY BASIN ALBANY-FRASER PROVINCE ALBERTA BASIN ALBORZ FOLD BELT ALBUQUERQUE-SANTA FE RIFT ALDAN SHIELD ALDAN UPLIFT ALENTEJO-GUADALQUIVIR BASIN ALEUTIAN ARC OCS ALGONQUIN ARCH-MICHIGAN BASIN ALPS ALTAY-SAYAN FOLDED REGION ALTIPLANO BASIN ALTUNSHAN FOLD BELT AMADEUS BASIN AMAZONAS BASIN AMHARA PLATEAU AMU-DARYA BASIN AMUNDSEN/BELLINGSHAUSEN OFFSHORE ANABAR BASIN ANABAR-OLENEK HIGH ANADYR BASIN ANAH GRABEN ANDALUCIA ANDARKO BASIN ANDEAN PROVINCE ANGARA-LENA TERRACE ANGLO-DUTCH BASIN ANGLO-PARIS BASIN ANIVA BASIN ANTARCTICA PENINSULA ANTICOSTI BASIN ANZHU UPLIFT APPALACHIAN BASIN APPALACHIAN FOLDBELT APULIA PLATFORM AQUITAINE BASIN ARABIAN SHIELD ARAFURA BASIN-IRIAN JAYA ARAKS ARARIPE PROVINCE ARCTIC COASTAL SHELF ARCTIC OCEAN SLOPE ARKOMA BASIN ARMORICIA ARUNTA BLOCK ASSAM ATLANTIC COASTAL PLAIN ATLANTIC MESOZOIC OCS ATLAS BASIN ATLAS UPLIFT AUSTRALIAN ARAFURA BASIN AVES RIDGE AYON BASIN AZOV-KUBAN BASIN BAFFA BAFFIN BASIN BAHAMA PLATFORM BAHIA SUL BASIN BAIKAL-PATOM FOLDED REGION BAJA CALIFORNIA BACKBONE BALI BASIN BALTIC DEPRESSION BALTIC SHIELD-NORWEGIAN CALEDONIDES BALUCHISTAN BANDA ARC BANGEMALL AND NABBERU BASINS BANKS BASIN BARAM DELTA/BRUNEI-SABAH BASIN BARENTS CONTINENTAL SLOPE BARINAS-APURE BASIN BARITO BASIN BARREIEINAS BASIN BASS BASIN BASSIAN RISE BAU WATERS BASIN BAYKIT ARCH BEATA RIDGE BEAUFORT SHELF OCS BEIBUWAN BASIN BEIRUT BELLONA PLATEAU BELORUSSIAN-VORONEZH HIGH BEND ARCH-FORT WORTH BASIN BENI BASIN BENUE BERING SHELF-MARGIN BASINS OCS BERMEJO BASIN BETIC ZONE BICOL SHELF BASIN BIG HORN BASIN BIJIANAN BASIN BINTUNI/SULAWATI PROVINCE BIRRINDUDU BASIN AND TANAMI BLOCK BLACK SEA CONTINENTAL SLOPE BLACK SEA DEEP-WATER BASIN BLACK WARRIOR BASIN BLAGOVESHCHENSK BASIN BLIGH WATER BASIN BLUE RIDGE THRUST BELT BOGDASHAN FOLD BELT BOHAIWAN BASIN BOHEMIA BOLSONES BASIN BOMBAY BONAIRE BASIN BONAPARTE GULF BASIN BONE BASIN BOOTHIA BASIN BORBON BASIN BOSE BASIN BOWEN BASIN BOWSER BASIN BRANSFIELD OFFSHORE BRAZILIAN SHIELD BREMER BASIN BRESSE DEPRESSION BROWSE BASIN BURDWOOD BANK - NORTH SCOTIA RIDGE BUREYA-DUNBEY REGION BURGOS BASIN BURROS UPLIFT CAERA BASIN CAGAYAN BASIN CAMBRIDGE ARCH-CENTRAL KANSAS UPLIFT CAMPECHE-SIGSBEE SALT BASIN CAMPOS BASIN CANADA BASIN-BEAUFORT SLOPE OCS CANADIAN CORDILLERA CANADIAN SHIELD CANADON ASFALTO CANARY ISLANDS CANNING BASIN CAPE VOGEL BASIN CAPRICORN BASIN CARIACO BASIN CARNARVON BASIN CARPATHIAN-BALKANIAN BASIN CARPENTARIA BASIN CAUCA BASIN CAUVERY CAYMAN RIDGE CAYMAN TROUGH CELEBES SEA CEN. IRANIAN MICROCONTINENTS CENTRAL AFGHANISTAN CENTRAL ALASKA CENTRAL BARENTS PLATFORM CENTRAL CALIFORNIA OCS CENTRAL CHILE FOREARC BASIN CENTRAL COASTAL CENTRAL IRANIAN BASINS CENTRAL KAMCHATKA GROUP OF BASINS CENTRAL KARA HIGH CENTRAL KAZAKHSTAN FOLDED REGION CENTRAL MESA CENTRAL OKHOTSK HIGH CENTRAL OMAN PLATFORM CENTRAL SUMATRA BASIN CENTRAL VIETNAM BASIN CESAR BASIN CHACO BASIN CHAD CHALLENGER PLATEAU CHATHAM RISE CHEROKEE PLATFORM CHIAPAS MASSIF CHIAPAS MASSIF-NUCLEAR CENTRAL AMERICA CHICONTEPEC BASIN CHIHUAHUAN BASIN AND RANGE CHINDWARA CHOCO PACIFIC BASIN CHOYBALSAN BASIN CHU-SARYSU BASIN CHUKCHI BORDERLAND OCS CHUKCHI SHELF OCS CHUXIONG BASIN CINCINNATI ARCH CIS-PATOM FOREDEEP CIS-SAYAN BASIN CLARENCE-MORETON BASIN COAHUILA PLATFORM COEN-YAMBO BLOCK COLORADO BASIN COLUMBIAN BASIN COOK INLET OCS CORNWALLIS FOLDBELT CORSICAN-SARDINIAN BASINS COTABATO BASIN CRETE CRIMEA HIGH CUOQING LUNPOLA BASIN CURICO BASIN CUYO BASIN CYRENACIA BASIN CYRENACIA UPLIFT DALY RIVER BASIN DAMER BELT DAMODAR DARLING BASIN DE LONG HIGH DENVER BASIN DERYUGIN BASIN DESEADO-FALKLANDS PROVINCE DIAMANTINA PROVINCE DIEGO RAMIREZ BASIN DINARIC ALPS DNIEPER-DONETS BASIN DOBROGEA FORELAND DOBROGEAN OROGEN DONBASS FOLDBELT DRUMMOND FOLD BELT AND ANAKIE HIGH E. KALAHARI PRECAMBRIAN BELT EAST AFRICAN RIFT EAST ARAL BASIN EAST ARAL SLOPE EAST CHINA SEA BASIN EAST FLANK OMAN SUB-BASIN EAST GREENLAND FOLDBELT EAST GREENLAND RIFT BASINS EAST ILI BASIN EAST JAVA BASIN EAST KAMCHATKA BASIN EAST KAMCHATKA UPLIFT EAST NATUNA BASIN EAST ONTONG JAVA RISE EAST PATAGONIA BASIN EAST SAKHALIN UPLIFT EAST TEXAS BASIN EAST VENEZUELA BASIN EAST ZAIRE PRECAMBRIAN BELT EASTERN CORDILLERA BASIN EASTERN GREAT BASIN EASTERN OREGON-WASHINGTON ELLESMERE FOLDBELT ERDIS KUFRA ERLIAN BASIN ERLIAN UPLIFT EROMANGA BASIN ESPIRITO SANTO BASIN ESSAOUNI BASIN ETOSHA EUCLA BASIN EUPHRATES/MARDIN FAEROES-SHETLAND-ORKNEY BASIN FAHUD SALT BASIN FALCON BASIN FALKLANDS PLATEAU FAMILINA PROVINCE FENNOSCANDIAN BORDER-DANISH-POLISH MARGIN FERGANA BASIN FEZZAN UPLIFT FIJI ISLANDS FIJI RIDGE FLORES BASIN FLORIDA PENINSULA FOREST CITY BASIN FOXE BASIN FOZ DE AMAZONAS BASIN FUNDY BASIN GALICIAN BASIN GALILEE BASIN GANGES-BRAHMAPUTRA DELTA GANGUT HIGH GASCOYNE BLOCK GAWLER BLOCK GENSAN BASIN GEORGES BANK GEORGIA BASIN GEORGINA BASIN GERMAN-POLISH BASIN GHABA SALT BASIN GHUDUN-KHASFEH FLANK PROVINCE GIPPSLAND BASIN GIZHIGIN BASIN GOBI BASIN GORONTALO BASIN GRAND ERG/AHNET BASIN GREAT AUSTRALIAN BIGHT BASIN GREAT CAUCASUS FOLDBELT GREAT LAKE BASIN GREAT LAKE UPLIFT GREAT SOUTH BASIN GREATER ANTILLES DEFORMED BELT GREATER GHAWAR UPLIFT GREATER SARAWAK BASIN GREENLAND SHIELD GRUMANT UPLIFT GUAJIRA BASIN GUAYMAS-TOPOLOBAMBO BASIN GUERCIF BASIN GUERRERO BASIN GULF CENOZOIC OCS GULF MESOZOIC OCS GULF OF ALASKA SHELF OCS GULF OF GUINEA GULF OF OMAN BASIN GUYANA SHIELD GUYANA-SURINAME BASIN GYEONGSANG BASIN HAIL-GAARA ARCH HALEB HALIFAX BASIN HALLS CREEK PROVINCE HALMAHERA BASIN HALMAHERA PLATFORM HAMMERFEST-VARANGER BASIN HAMRA BASIN HATTON-ROCKALL BASIN HAUTS BASIN HAYS STRUCTURAL BELT HEILONGJIANG BASIN HIKURANI TROUGH HIMALAYAN HIMALAYAN FORELAND HODGKINSON/LACHLAN FOLD BELT HOGGAR HONSHU RIDGE HOPE BASIN OCS HORDA-NORWEGIAN-DANISH BASIN HUALLAGA BASIN HUDSON BAY BASIN HUDSON STRAIT BASIN HUKSAN PLATFORM HUQF-HAUSHI UPLIFT IBERIAN MASSIF IBERIC CORDILLERA IDAHO-SNAKE RIVER DOWNWARP ILLINOIS BASIN ILLIZI BASIN INDIAN SHIELD INDISPENSABLE REEF INDO-BURMAN INDUS INNER BORDERLAND OCS INTERIOR HOMOCLINE-CENTRAL ARCH IOWA SHELF IRELAND-SCOTLAND PLATFORM IRISH SEA IRRAWADDY ISHIKARI HIDAKA BASIN ISSYK-KUL BASIN IULLEMMEDEN JAFR-TABUK BASIN JALISCO-OAXACA PLATFORM JAPAN VOLCANIC ARC/ACCRETED TERRANE JATOBA BASIN JAVA/BANDA SEA JIANGHAN BASIN JIANGNAN SOUTH JIANGSU FOLD BELT JIUQUAN MINLE WUWEI BASIN JOBAN BASIN JUNGGAR BASIN JURA KALAHARI KANE BASIN KANTO BASIN KARABOGAZ-KARAKUM HIGH KARAMAY THRUST BELT KARDIFF/MENDERS MASSIF KAROO KEMPENDIAY REGION KERGUELEN OFFSHORE KERMADEC RIDGE KETUNEAU/SINTANG TERRANE KHANKA BASIN KHARTOUM KHATANGA SADDLE KHATYRKA BASIN KHLEISHA UPLIFT KHORAT PLATFORM KIMBERLEY BASIN KINKIL BASIN KLAMATH-SIERRA NEVADA KOHAT-POTWAR KOLA MONOCLINE-FINNMARK PLATFORM KONI-TAYGANOS UPLIFT KONKAN KOPET-DAG FOLDBELT KOREA BAY BASIN KOREAN CONTINENTAL SHELF KOREAN CRATON KORYAK-KAMCHATKA FOLDBELT KOTELNICH ARCH KRISHNA-GODAVARI KUMUKULIG BASIN KUNLUNSHAN FOLD BELT KURA BASIN KURIL-KAMCHATKA SLOPE KUTEI BASIN KUZNETSK BASIN LABOULAYE-MACACHIN BASIN LABRADOR-NEWFOUNDLAND SHELF LACKLAN FOLD BELT LAKSHADWEEP LANCONES BASIN LANPING SIMAO BASIN LAPTEV SHELF LAS ANIMAS ARCH LAURA BASIN LEIDONG BASIN LENA-VILYUY BASIN LESSER ANTILLES DEFORMED BELT LESSER CAUCASUS LEVANTINE BASIN LHASA BASIN LHASA TERRANE LIMA BASIN LION-CAMARGUE LLANOS BASIN LONDON-BRABANT PLATFORM LONGMENSHAN DABASHAN FOLD BELT LORD HOWE RISE LOS ANGELES BASIN LOS ANGELES BASIN OCS LOUISIANA-MISSISSIPPI SALT BASINS LOWER MAGDELENA LOYALTY ISLAND RIDGE LUDLOV SADDLE LUFFILLIAN ARCH LUSITANIAN BASIN LUT BLOCK AND DEPRESSION LUXI JIAOLIAO UPLIFT MACKENZIE DELTA MACKENZIE DELTA SLOPE MACKENZIE FOLDBELT MACUSPANA BASIN MADAGASCAR MADAGASCAR OFFSHORE MADRE DE DIOS BASIN MADRE DOS DIOS BASIN MAGALLANES BASIN MAGDALEN BASIN MAGISCATZIN BASIN MAHANADI MAKRAN MALAKULA/AOBA/BANKS BASIN MALAY BASIN MALAY PENINSULA MALDIVES MALVINAS BASIN MALVINAS PLATEAU MANABI BASIN MANGYSHLAK-USTYURT FOLDBELT MARACAIBO BASIN MARATHON THRUST BELT MARIB-AL JAWF BASIN MARIE BYRD ONSHORE MARION TERRAIN MARYBOROUGH BASIN MASCASIN BASIN MASILA-JEZA BASIN MASIRAH TROUGH MASSIF CENTRAL MAYA MOUNTAINS MAZATLAN BASIN MCARTHUR BASIN MEDITERRANEAN BASIN MEKONG/CUULONG/VUNG TAU BASIN MELANESIA BORDER PLATEAU MELAWI BASIN MELLISH REEF MERATUS HIGH MERAUKE PLATFORM MERCEDES BASIN MESOPOTAMIAN FOREDEEP BASIN MEZEN BASIN MICHIGAN BASIN MID-NORTH SEA HIGH MIDDLE AMERICA PROVINCE MIDDLE AMUR BASIN MIDDLE CASPIAN BASIN MIDDLE MAGDELENA MIDLAND VALLEY-FORTH APPROACHES BASIN MINTO ARCH MIRBAT PRECAMBRIAN BASEMENT MIYAZAKI BASIN MOHE BASIN MOLASSE BASIN MOLLENDO-TARAPACA BASIN MOMA BASIN MONEY SHOAL BASIN MONGOL-OKHOTSK FOLDED REGION MONTANA THRUST BELT MOQUEGUA-TAMARUGA BASIN MORONDAVA MOSCOW BASIN MOZAMBIQUE COASTAL MT.ISA BLOCK MUGODZHARY-SOUTH EMBA MUKALLA RIFT BASIN MUNSTERLAND BASIN MURRAY BASIN MURZUK BASIN MUSGRAVE BLOCK NANPANJIANG DEPRESSION NANYANG BASIN NARYN BASIN NAVARIN BASIN OCS NEFUSN UPLIFT NEMAHA UPLIFT NEOGENE VOLCANIC BELT NEPA-BOTUOBA ARCH NEUQUEN BASIN NEW CALEDONIA NEW ENGLAND NEW ENGLAND FOLD BELT NEW GUINEA FORELAND BASIN-FOLD BELT NEW GUINEA MOBILE BELT NEW HEBRIDES ARC NEW IRELAND BASIN NEW ZEALAND EAST COAST BASIN NEW ZEALAND OROGENIC BELT NGALIA BASIN NIGER DELTA NIGERIAN MASSIVE NIIGATA BASIN NILE DELTA BASIN NIRIHUAU BASIN NORFOLK ISLAND RIDGE NORTH ALEUTIAN BASIN OCS NORTH BANDA BASIN NORTH BARENTS BASIN NORTH BURMA NORTH CARPATHIAN BASIN NORTH CARRIBEAN DEFORMED BELT NORTH CASPIAN BASIN NORTH CHUKCHI BASIN NORTH CRIMEA BASIN NORTH EGYPT BASIN NORTH GREENLAND FOLDBELT NORTH GREENLAND PLATFORM NORTH HARRAH VOLCANICS NORTH MINUSA BASIN NORTH NICARAGUAN RISE NORTH NOVAYA ZEMLYA BASIN NORTH OKHOTSK GROUP OF BASINS NORTH RED SEA SHIELD NORTH SAKHALIN BASIN NORTH SEA GRABEN NORTH SUMATRA BASIN NORTH USTYURT BASIN NORTH-CENTRAL MONTANA NORTHEAST BLACK SEA SHELF NORTHERN ALASKA NORTHERN ARIZONA NORTHERN COASTAL NORTHERN INTERIOR BASINS NORTHERN IRIAN JAYA WAROPEN BASIN NORTHLAND BASIN NORTHWEST GERMAN BASIN NORTHWEST JAVA BASIN NORTHWEST SHELF NORTON BASIN OCS NOVAYA ZEMLYA MONOCLINE NOVOSIBIRSK BASIN NUBIAN UPLIFT NYALGA BASIN OCEAN OFFICER BASIN OKINAWA TROUGH OLYUTOR BASIN OMAN MOUNTAINS ONEKOTAN BASIN ORAN-OLMEDO BASIN ORANGE RIVER COASTAL ORDOS BASIN OSORNO-LLANQUIHUE BASIN OTWAY BASIN OUGARTA UPLIFT OUTER BORDERLAND OCS OZARK UPLIFT PACIFIC NORTHWEST OCS PACIFIC OFFSHORE BASIN PALAWAN SHELF PALMYRA ZONE PALO DURO BASIN PAMIR HIGH PAMUSIAN TARAKAN BASIN PANJANG/CARDOMOMES BASIN PANNONIAN BASIN PAPUAN BASIN-SHELF PLATFORM PARADOX BASIN PARANA BASIN PARECIS PROVINCE PARK BASINS PARNAIBA BASIN PARRAS BASIN PARRY ISLAND FOLDBELT PATERSON PROVINCE PEARL RIVER MOUTH BASIN PEDERNAL UPLIFT PELAGIAN BASIN PELOTAS BASIN PENAS BASIN PENYU/WEST NATUNA BASIN PENZHINA BASIN PERIJA-VENEZUELA-COASTAL RANGES PERMIAN BASIN PERNAMBUCO BASIN PERTH BASIN PHILIPPINE ACCRETIONARY PRISM PHILIPPINE MAGMATIC ARC PIEDMONT PILBARA BLOCK PINE CREEK GEOSYNCLINE PISCO BASIN PO BASIN POLAR PROVINCE POLES SADDLE POTIGAR BASIN POWDER RIVER BASIN PRANHITA-GODAVARI PRIPYAT BASIN PROGRESO BASIN PROVENCE BASIN PUERTO RICO TRENCH PURISIMA-IRAY BASIN PUTUMAYO-ORIENTE-MARANON BASIN PYRENEAN FOOTHILLS-EBRO BASIN QABDU BASIN QAIDAM BASIN QATAR ARCH QIANGTANG TANGGULA BASIN QIANGTANG TERRANE QILIANSHAN FOLD BELT QINLING DABIESHAN FOLD BELT QIONGDONGNAN BASIN QUEEN CHARLOTTE BASIN QUEEN MAUD ONSHORE QUEEN MAUD/ENDERBY OFFSHORE QUEENSLAND PLATEAU QUESNEL BASIN RABAT BASIN RAJANG-CROCKER ACCRETIONARY PRISM RATON BASIN-RIO GRANDE UPLIFT RECONCAVO BASIN RED SEA BASIN REED BANK BASIN REGGANE BASIN REGUIBATE UPLIFT RHINE GRABEN RIF BASIN RIONI BASIN ROCKY CAPE BLOCK/DUNDAS TROUGH ROCKY MOUNTAIN DEFORMED BELT ROSS OFFSHORE RUB AL KHALI BASIN RUSSELL BASIN RUSSIAN CRATON MARGIN RUTBAH UPLIFT RYUKYU VOLCANIC ARC SABINAS BASIN SACRAMENTO BASIN SAGARA BASIN SAIGON BASIN SALADO BASIN SALAR DE ATACAMA BASIN SALAVERRY BASIN SALINA BASIN SALINE-COMALCALCO BASIN SALTON TROUGH SAMOA BASIN SAN DIEGO-OCEANSIDE SAN JOAQUIN BASIN SAN JORGE BASIN SAN JUAN BASIN SAN LUIS BASIN SANSHUI BASIN SANTA BARBARA-VENTURA BASIN OCS SANTA CRUZ-TARIJA BASIN SANTA MARIA BASIN SANTANA PLATFORM SANTIAGO BASIN SANTOS BASIN SAO FRANCISCO BASIN SATPURA_BRAHMANI SCHMIDT BASIN SCOTIA RIDGE OFFSHORE SCOTIAN SHELF SCOTT OFFSHORE SEA OF JAPAN BACKARC BASIN SECHURA BASIN SEDGWICK BASIN SENEGAL SEPIK-RAMU BASIN SERGIPE-ALAGOAS BASIN SEVERNAYA ZEMLYA HIGH SEYCHELLES SHABWAH BASIN SHANXI PLATEAU SHARMAH RIFT BASIN SHIWAN DASHAN BASIN SHORLAND BASIN SHUMAGIN-KODIAK SHELF OCS SICHUAN BASIN SICILY SIDNEY BASIN SIERRA MADRE DE CHIAPAS-PETEN FOLDBELT SIERRA MADRE OCCIDENTAL VOLCANIC PLATEAU SIERRA MADRE ORIENTAL FOLDBELT SIERRA NEVADA DE SANTA MARTA SIKHOTE-ALIN FOLDED REGION SINAI BASIN SINALOA SINZI UPLIFT SIOUX ARCH SIRTE BASIN SOLANDER-WAIAU BASIN SOLIMOES BASIN SOLOMON ISLANDS SOMALI SOMALI DEEP SEA SONGLIAO BASIN SONGPAN GANZI FOLD BELT SONOMA-LIVERMORE BASIN SONORAN BASIN AND RANGE SOUTH AFRICAN COASTAL SOUTH ARCTIC BASIN SOUTH BANDA BASIN SOUTH BARENTS BASIN SOUTH BISMARCK VOLCANIC ARC SOUTH CARIBBEAN DEFORMED BELT SOUTH CASPIAN BASIN SOUTH CHINA CONTINENTAL SHELF SLOPE SOUTH CHINA FOLD BELT SOUTH CHINA OCEAN BASIN SOUTH CHINA SEA PLATFORM SOUTH CHUKCHI-HOPE BASIN SOUTH HARRAH VOLCANICS SOUTH KURIL BASIN SOUTH MAKASSAR BASIN SOUTH MINUSA BASIN SOUTH NICARAGUAN RISE SOUTH OKHOTSK BASIN SOUTH OMAN SALT BASIN SOUTH RED SEA SHIELD SOUTH SUMATRA BASIN SOUTH TURGAY BASIN SOUTH-CENTRAL NEW MEXICO SOUTHEAST AFGHANISTAN SOUTHEAST GREENLAND BASIN SOUTHERN ALASKA SOUTHERN ARIZONA-SOUTHWESTERN NEW MEXICO SOUTHERN NEWFOUNDLAND SHELF SOUTHERN OKLAHOMA SOUTHWEST GERMAN BASIN SOUTHWEST MONTANA SOUTHWESTERN WYOMING SPANISH TROUGH-CANTABRIAN ZONE SRI LANKA ST. ANNA BASIN ST. GEORGE BASIN OCS ST. LAWRENCE LOWLANDS ST. MATTHEW-HALL BASIN OCS STUART SHELF SUBEI YELLOW SEA BASIN SUCUNDURI PROVINCE SUD SUIFUN BASIN SULAIMAN-KIRTHAR SULAWESI ACCRETIONARY PRISM SULAWESI MAGMATIC ARC SULONGSHAN FOLD BELT SULU ARCH SULU SEA BASIN SUMATRA/JAVA ACCRETIONARY PRISM SUMATRA/JAVA FORE-ARC BASINS SUMATRA/JAVA MAGMATIC ARC SUMBA PROVINCE SUNDA PLATFORM SUPERIOR SURAT BASIN SUSUNAY UPLIFT SVALBARD HIGH SVERDRUP BASIN SYDNEY BASIN SYR-DARYA BASIN SYRIAN ARCH TACUTU BASIN TAIHANGSHAN YANSHAN FOLD BELT TAIKANG HEFEI BASIN TAIMYR-KARA HIGH TAIWAN MELANGE BELT TAIWAN THRUST AND FOLD BELT TAIXINAN BASIN TAJO-DUERO BASIN TALARA BASIN TALOV UPLIFT TAMATAVE TAMAULIPAS ARCH TAMPICO-MISANTLA BASIN TANZANIA COASTAL TAOUDENI BASIN TARANAKI BASIN TARIM BASIN TASMANIA BASIN TATAR STRAIT BASIN TELLIAN FOREDEEP TELLIAN UPLIFT TEMTSAG HAILAR BASIN TEMUCO BASIN TENASSERIM-SHAN TENNANT CREEK BLOCK TERPENIYA BAY BASIN THAI BASIN THAILAND MESOZOIC BASIN BELT THIEMBOKA UPLIFT THRACE/SAMSUN THREE KINGS RISE TIAN SHAN FOLDBELT TIMAN HIGH TIMAN-PECHORA BASIN TINDOUF BASIN TINRO BASIN TOBAGO TROUGH TOFINO BASIN TOKACHI BASIN TONGA RIDGE TONLE SAP-PHNOM PENH BASIN TORRECON-SIERRA MADRE ORIENTAL FOLDBELT TOTTORI BASIN TRANS-GRABEN TRANS-MEXICAN NEOVOLCANIC AXIS TRANSANTARCTICA MOUNTAINS TRANSYLVANIA TRIAS/GHADAMES BASIN TROMS-BJORNOYA BASIN TRUJILLO BASIN TRUONG SON FOLD BELT TSUSHIMA BASIN TUCANO BASIN TUNGUSKA BASIN TURGAY DEPRESSION TURPAN BASIN TURUKHAN-IGARKA UPLIFT TURUKHAN-NORILSK FOLDED ZONE TUSCANY-LATIUM-PAOLA TUXLA UPLIFT TUZ/CORUM TYRRHENIAN BASIN UCAYALI BASIN UEDINENIYA BASIN UINTA-PICEANCE BASINS UKRAINIAN SHIELD ULAN BATOR BASIN UPPER BUREYA BASIN UPPER EGYPT BASIN UPPER MAGDELENA UPPER ZEYA BASIN URAL-NOVAYA ZEMLYA FOLDBELT USHAKOV HIGH USHUMUN BASIN VANIKORO BASIN VENEZUELAN BASIN VENTURA BASIN VERACRUZ BASIN VERKHOYAN-CHUKOTKA FOLDED REGION VESTFORD-HELGELAND VICTORIA RIVER BASIN VILLAHERMOSA UPLIFT VISAYAN VIZCAINO BASIN VIZE HIGH VOLGA-URAL REGION VOLTA WADI-SURHAN BASIN WAIKATO BASIN WANDEL SEA BASIN WANGANUI BASIN WEBER BASIN WEDDELL OFFSHORE WEST AFRICAN COASTAL WEST AFRICAN SHIELD WEST BLACK SEA BASIN WEST GREENLAND BASIN WEST ILI BASIN WEST KAMCHATKA BASIN WEST SAKHALIN UPLIFT WEST SIBERIAN BASIN WEST ZAIRE PRECAMBRIAN BELT WEST-CENTRAL COASTAL WEST-CENTRAL CORDILLERA WESTERN GREAT BASIN WESTERN GULF WESTERN NUBIAN SHIELD WESTERN OREGON-WASHINGTON WHITEHORSE BASIN WIDYAN BASIN-INT. PLATFORM WILKES ONSHORE WILLISTON BASIN WIND RIVER BASIN WISO BASIN WOLLASTON BASIN WRANGEL BASIN WRANGEL-HERALD UPLIFT WYOMING THRUST BELT XICHANG YUNNAN FOLD BELT XINGU PROVINCE XISHA TROUGH YEMEN VOLCANIC BASIN (NORTH) YEMEN VOLCANIC BASIN (SOUTH) YENISEY RIDGE YENISEY-KHATANGA BASIN YILGARN BLOCK YINGGEHAI BASIN YINSHAN DA XIAO HINGGANLING UPLIFT YITONG GRABEN YUCATAN BASIN YUCATAN PLATFORM YUKON BASIN YUNNAN GUIZHOU HUBEI FOLD BELT ZAGROS FOLD BELT ZAGROS THRUST ZONE ZAIRE ZAMBALEZ/CENTRAL LUZON BASIN ZAYSAN BASIN ZEYA-BUREYA BASIN ZHANGGUANGCAILING UPLIFT ZYRYANKA BASIN
Water Depth:	min  max	Operator:	All Operators 3 T EXPLORATION 3-M ENERGY CORP. 7711 CORPORATION A.M.A. CHILES A.O.E. OPERATORS, INC. AB RESOURCES PA, LLC ABA ENERGY ABACO OPERATING ABARTA, INC. ABRAXAS PETROLEUM AC EXPLORATION AC EXPLORATION LLC ACOCK ANAQUA, LP ACOCK ENGINEERING ACOCK/ANAQUA OPERATING CO., LP ADAMS RESOURCES & ENERGY ADEXCO ADM (ARTHUR DANIELS MIDLAND COMPANY) ADVENTURE EXPLORATION PARTNERS, LLC AEXCO AEXCO PETROLEUM AF OPERATING, LLC AGAPE ENERGY ALLIANCE, LLC AGRICULTURAL ENERGY SERVICES, INC. AGV CORPORATION AIR LIQUIDE AMERICA CORP. AKERMAN DRILLING, INC. AKG OPERATING COMPANY ALAMO PETROLEUM ALICE-SIDNEY OIL CO. ALINET CORPORATION ALLEGRO INVESTMENTS, INC. ALLEN PETROLEUM ALLIANCE PETROLEUM CORP. ALLSTATE ENERGY CORPORATION ALPHA ENERGY OPERATING, LLC ALPINE EXPLORATION COMPANIES, INC. ALPINE PETROLEUM ALTA MESA SERVICES, LP ALTA OPERATING COMPANY, LLC ALTAROCK ENERGY, INC. ALTEX ENERGY CORPORATION AMARILLO EXPLORATION, INC. AMBASSADOR PETROLEUM, INC. AMERICAN ENERGY AMERICAN ENERGY OPERATIONS, INC. AMERICAN ENERGY PARTNERS, INC. AMERICAN WARRIOR INC AMERICO ENERGY RESOURCES, LLC AMERISTATE EXPLORATION ANADARKO ANAQUA OIL AND GAS ANATEXAS OFFSHORE, INC. ANDALUCIA OIL COMPANY ANDERSON ENERGY, INC. ANDERSON OIL LTD. ANGLO-SUISSE OFFSHORE PARTNERS, LLC ANKOR ENGERY, LLC ANLOC, LLC ANNAROCK PETROLEUM, LLC ANSBRO PETROLEUM ANSCHUTZ ANTERO ENERGY, LLC ANTERO RESOURCES ANTLE OPERATING, INC. - US AOG, INC. APACHE APOLLO ENERGIES, INC. APOLLO OPERATING, LLC APPALACHIAN POWER COMPANY APPROACH OPERATING AQUA-OIL, INC. ARCADIA GAS STORAGE, LLC ARCADIA OIL COMPANY ARENA OFFSHORE ARENA OFFSHORE, LLC ARENA RESOURCES, INC. ARES ENERGY, LTD. ARG RESOURCES, INC. ARIANA ENERGY, LLC ARK-LA-TEX ENERGY ARK-LA-TEX ENERGY, LLC ARLINGTON STORAGE COMPANY, LLC ARMSTRONG ENERGY CORPORATION ARMSTRONG OPERATING ARMSTRONG OPERATING, INC. ARMSTRONG PET. CORP. ARNOLD OIL PROPERTIES ARNOLD OIL PROPERTIES, LLC ARRINGTON CJM, INC. ARROWHEAD ENERGY, INC. ARTEX OIL & GAS ARUBA PETROLEUM, INC. ASCENT OPERATING, LP ASCENT RESOURCES WV, INC. ASM OIL & GAS COMPANY, INC. ASPECT ENERGY ASPECT RESOURCES, LLC ASPEN EXPLORATION ATCHLEY RESOURCES, INC. ATLANTIC OIL CO ATLANTIC OPERATING, INC. ATLAS AMERICA ATLAS ENERGY INDIANA, LLC ATLAS ENERGY LTD. ATLAS RESOURCES, INC. ATOKA OPERATING ATP OIL & GAS ATROPOS EXPLORATION ATROPOS PRODUCTION CORPORATION AURORA RESOURCES CORPORATION AVALON EXPLORATION AVALON EXPLORATION, INC. AWP OPERATING COMPANY AXIS ENERGY CORPORATION AXIS ONSHORE, LLC AXIS ONSHORE, LP B & B OPERATING, LP B & J VACUUM TANK SERVICE, INC. B & L EXPLORATION, LLC B & W OPERATING B AND E EXPLORATION, INC. B C OPERATING B. P. PRODUCTIONS, INC. B. R. POLK BACHTELL OIL & GAS BAGBY ENERGY, LLC. BAKER OPERATING, INC. BALLANTYNE OIL COMPANY BALLARD BANKERS PETROLEUM US INC BARNES OIL & GAS, LLC BARNETT ENERGY BARON EXPLORATION CO BARRETT BROTHERS OIL AND GAS BARROW SHAVER RESOURCES BARROW-SHAVER RESOURCES COMPANY BASA RESOURCES, INC. BASELINE OIL & GAS CORPORATION BASIC ENERGY SERVICES, INC. BASS ENERGY BASS ENERGY COMPANY, INC. BASS ENTERPRISES BATTELLE MEMORIAL INSTITUTE BAY ROCK OPERATING BAY-TECH OPERATING CO., INC. BAYOU BEND OFFSHORE LTD. BAYS EXPLORATION BAYSHORE EXPLORATION BAYTEX ENERGY USA, LTD. BBX OPERATING, INC. BBX OPERATING, LLC BD PRODUCTION COMPANY, INC. BEACH EXPLORATION, INC. BEAN RESOURCES, INC. BEAR OIL & GAS, INC. BEARD OIL COMPANY BEASLEY OIL COMPANY, INC. BECKER OIL CORPORATION BECKHAM RESOURCES, INC. BEHM ENERGY BELDEN AND BLAKE CORP BENCHMARK OIL & GAS COMPANY BENGALIA LAND AND CATTLE COMPANY BENTLEY FAMILY, LP BENTLEY OIL AND GAS COMPANY BEPCO OPERATING CO. BEPCO, LP BEREXCO, INC. BERKSHIRE OPERATING, LLC BERRY ENERGY CONSULTANTS & MGRS., INC. BERRY OIL COMPANY BERRY PETROLEUM BERYL OIL AND GAS, LP BEST PETROLEUM EXPLORATION, INC. BESTO OIL & GAS, INC. BETSEY PETROLEUM BFP BLACK CANYON, LLC BHP BIG STAR DRILLING BIG STAR OIL & GAS BIG STAR OIL & GAS, LLC BIJOE DEVELOPMENT, INC. BILL BARRETT BILL BOWMAN OIL COMPANY BINGER OPERATIONS, LLC BISON BISON EXPLORATION, LP BLACK BRUSH OIL & GAS BLACK DIAMOND OIL BLACK DIAMOND OIL, INC. BLACK ELK ENERGY LAND OPERATIONS, LLC BLACK ELK ENERGY OFFSHORE OPERATIONS, LLC BLACK HILLS EXPLORATION BLACK PEARL EXPLORATION, LLC BLACK POOL ENERGY, LP BLACKWELL OPERATING BLAKE EXPLORATION, LLC BLAKE PRODUCTION COMPANY, INC. BLAKEENERGY OPERATING, LLC BLEACH TECH, LLC BLOCK T PETROLEUM INC. BLUE AND GRAY FIELD MT BLUE CHIP OIL, INC. BLUE DOLPHIN PRO, LLC BLUE OIL, INC. BLUE RIDGE PETROLEUM CORPORATION BLUE WING ENERGY, INC. BLUESTONE NATURAL RESOURCES BNK PETROLEUM INC. BNP PETROLEUM CORP BOB PHILLIPS BOB RUST EXPLORATION COMPANY BOBCAT RESOURCES, LLC BOLD ENERGY BONANZA CREEK ENERGY OPERATING COMPANY BOPCO LP BORDERS EXPLORATION, LLC BOSQUE DISPOSAL SYSTEMS, LLC BOWLES PROPERTIES BOYD AND MCWILLIAMS BP BRACKEN ENERGY CO. BRADEN EXPLORATION, LLC BRAMMER ENGINEERING BRAMMER OPERATING COMPANY, LLC BRANTA PRODUCTION COMPANY, LLC BRECK OPERATING BREITBURN ENERGY BREITBURN OPERATING LP BRETON ENERGY, LLC BRG PETROLEUM CORP BRIDAS ENERGY USA BRIDGEPORT TANK TRUCK, INC BRIDWELL OIL CO BRIDWELL OIL COMPANY - US BRIGHAM BRIGHT & COMPANY - US BRIGHT AND CO BRITO OIL COMPANY BRITTANY ENERGY, LLC BROAD OAK BROKEN HILL PETROLEUM BROWER OIL AND GAS BROWN AND BORELLI,INC. BROWNING OIL BRUINGTON OPERATING, LLC BSI COMPANIES BTA OIL PRODUCERS BUCK PETROLEUM CO. BUFFCO PRODUCTION BUFFCO PRODUCTION, INC. BURAY ENERGY, INT. LLC BURK ROYALTY CO BURK ROYALTY COMPANY, LTD. - US BURLESON AND HUFF BURLINGTON RESOURCES BURNETT OIL COMPANY BWOC BYRD OPERATING BYRNE OIL COMPANY C & E OPERATORS C.F. QUALIA OPERATING C.W. RESOURCES CABA, LLC CABOT OIL & GAS CACTUS DRILLING COMPANY, LLC CADDO MANAGEMENT CALENERGY CALENERGY OPERATING COMPANY CALLON PETROLEUM COMPANY CALPINE CALYX ENERGY, LLC CAMBRIAN MANAGEMENT, LTD CAMBRIDGE PRODUCTION INC. CAMDEN CAMEX RESERVE OPER. CAMEX, INC. CAMTERRA RESOURCES CAMTERRA RESOURCES, INC. - US CANAAN RESOURCES, LLC CANAN MOWREY OPERATING, LLC CANAN OPERATING INC. CANO PETRO OF NEW MEXICO, INC. CANYON EXPLORATION COMPANY CAPALI ENERGY, LLC CAPITAL OIL AND GAS LTD. CAPITAL STAR CAPITAN ENERGY INC. CAPITOL OIL CORP CAPITOL OIL CORPORATION - US CAPSTAR DRILLING CARGILL, INC. CARMEN SCHMITT CARRIZO OIL & GAS CARTER EXPLORATION COMPANY CARUTHERS PRODUCING CASKIDS OPERATING CASTELLI EXPLORATION INC CASTEX ENERGY CASTEX OFFSHORE, LLC CASTLE MINERALS CASTLE RESOURCES CATTLEMAN'S OIL OPERATIONS CAZA OPERATING, LLC CB MONCREIF CBL RESOURCES, LLC CDX GAS CEC OPERATIONS, LLC CECIL WHITE OPERATING CEI PETROLEUM, INC. CEJA CEL PROPERTIES, LLC CELERO ENERGY II, LP CENCO OIL CENTERPOINT ENERGY-MRT CENTEX ENERGY, LLC CENTRAL BASIN OIL INVESTMENTS, INC. CENTRAL NEW YORK OIL & GAS CENTRAL OPERATING CENTURION EXPLORATION COMPANY CENTURY CENTURY ENERGY CENTURY OPERATING CENTURY PETROLEUM DRILLING CENTURY PRODUCTION, INC. CEP MID-CONTINENT, LLC CHALKER CHAPARRAL ENERGY CHARRO OPERATING CHARTER OAK PRODUCTIONS CO LLC CHESAPEAKE CHESAPEAKE EXPLORATION, LLC CHESTNUT PETROLEUM CHESTNUT RIDGE STORAGE, LLC CHEVRONTEXACO CHEYENNE PETROLEUM COMPANY CHI OPERATING CHIEF OIL & GAS CHIEFTAIN OIL COMPANY, INC. CHINN EXPLORATION CHISHOLM OPERATING, INC. CHOICE EXPLORATION, INC. CHOLLA PETROLEUM, INC. CHOLLA RESOURCES INC CHROMA OPERATING, INC. CICO OIL AND GAS CIG RESOURCES COMPANY CIMAREX CIMARRON ENERGY CORP. CIMARRON ENGINEERING CORPORATION CIMARRON PETROLEUM LTD. CINOCO PRODUCTION COMPANY, INC. CIRQUE RESOURCES, LP CITATION OIL & GAS CLARENCE SHERMAN CLARK ENERGY CLASSIC OIL AND GAS CLASSIC OPERATING COMPANY CLAYTON WILLIAMS ENERGY CLEAR FORK, INC - US CLEAR WATER, INC. CLEARFORK INC CLEARWATER ENERGY INC. CLEARY PETROLEUM CORPORATION CML EXPLORATION LLC CMR ENERGY CMX OF KANSAS CMX, INC. - US CNX ENERGY CNX GAS COMPANY, LLC CNX GAS CORPORATION COASTAL DRILLING COASTAL PLAINS EXPLORATION, LLC COASTLINE EXPLORATION COBALT INTERNATIONAL ENERGY, LP COBRA OIL & GAS COBRA RESOURCES, LLC COG OPERATING LLC COLEMAN OIL & GAS COLLINS & YOUNG OPERATING, LLC COLLINS AND WARE, INC. COLTON LLC COLUMBIA GAS TRANSMISSION COLUMBIA GAS TRANSMISSION CORP COLUMBUS ENERGY, LLC COMANCHE RESOURCES COMBINED RESOURCES COMMON DISPOSAL, LLC COMMON RESOURCES, LLC COMPLETE VACUUM AND RENTAL, LLP COMSTOCK OIL & GAS CONOCOPHILLIPS CONQUEST EXPLORATION CONTANGO OIL & GAS COMPANY CONTINENTAL DRILLING CO. CONTINENTAL OPERATING COMPANY CONTINENTAL PRODUCTION COMPANY, LLC CONTINENTAL RESOURCES CONTINENTAL US EXPLORATION COOK OIL COMPANY COOPER OIL AND GAS CORAL COAST PETROLEUM LLC CORALL PRODUCTION CORPORATION CORDA CORP. CORDILLERA ENERGY CORE MINERALS OPERATING COMPANY, INC. CORKRAN ENERGY LP CORLENA OIL COMPANY CORNERSTONE E & P COMPANY, LP CORNERSTONE NATURAL RESOURCES CORONADO COMPANY CORONADO ENERGY E & P COMPANY, LLC CORONADO ENERGY E & P COMPANY, LLC* CORONADO MINERALS, LLC CORTEZ HEARTLAND, LLC COSO OPERATING LLC COURSON OIL AND GAS INC. COVE PETROLEUM CORP. COVINGTON OIL CO. COX AND PERKINS EXPLORATION, INC. CRAIG ELDER OIL & GAS CRATON ENERGY COMPANY II, LLC CRAWFORD ENERGY CRAWLEY PETROLEUM CREED OPERATING COMPANY, LLC CREST ENERGY, INC. CREST RESOURCES CRIMSON ENERGY CROW CREEK OPERATING CROW DRLG AND PROD CO CROWN EQUIPMENT COMPANY CROWN QUEST CRUSADER ENERGY CRUSADER ENERGY GROUP, INC. CS SOLUTIONS CUMMING COMPANY, INC, THE CUMMINGS OIL CO. CUMMINS AND WALKER OIL CUTTER PETROLEUM CW RESOURCES INC. CYPRESS E & P CORP CYPRESS OPERATING CYPRESS PRODUCTION, INC. D & D OIL COMPANY #2 D & L ENERGY, INC. - US D AND J OIL CO OF OKLA D AND L ENERGY D. J. SIMMONS COMPANY DACAR ENERGY, INC. DALE OPERATING DALLAS PRODUCTION DAMAR RES. DAMAR RESOURCES, INC. - US - US DAN A HUGHES DANMARK ENERGY SERVICES, INC. DARK HORSE EXPLORATION, INC. DART OIL DAUGHERTY PETROLEUM DAUGHERTY PETROLEUM, INC. - US DAVE HOLKE CONSULTING, INC. DAVID ARRINGTON OIL AND GAS DAVID G. POWELL, INC. DAVID H ARRINGTON DAVID R. HILL DAVIS BROTHERS OIL DAVIS OIL & GAS, LLC DAVIS OPERATING COMPANY DAVIS PETROLEUM DAYSTAR DBC OPERATING COMPANY, LLC DBL DRILLING & PRODUCTION DBP EXPLORATION, INC. DCP MIDSTREAM, LP DDD ENERGY, INC. DECKER OPERATING CO., L.L.C. DECKER OPERATING CO., LLC DEE DRILLING COMPANY, INC. DEEP RESOURCES, LLC DEEP ROCK RESOURCES DEEP ROCK RESOURCES, INC. - US DEKA EXPLORATION INC DEL MAR EXPLORATION COMPANY DEL PETROLEUM CORPORATION DELPHI OIL INC. DELTA OIL & GAS, LTD. DELTA OIL AND GAS CO DELTA OIL CO DELTA PETROLEUM CORP DELTEX MINERALS INC. DENALI OIL & GAS DENBURY DESOTO OPERATING DESTIN OPERATING COMPANY, INC. DEVON DEVON LOUISIANA CORPORATION DEVONIAN DRILLING DEVONIAN GAS PRODUCTION, INC. DEWBRE OPERATING DIAMOND M DRILLING & EXPLORATION COMPANY DIAMOND OFFSHORE DIAMOND OIL, LLC DIAMOND OPERATING, LLC DIAMONDBACK OPERATING, LP DIASU EXPLORATION, INC. DIMENSION ENERGY COMPANY, LLC DINERO OPERATING DIRNETT, INC. DISCOVERY OPERATING DIXON ENERGY, INC. DOLBERRY ENERGY RESOURCES CORPORATION DOMINION DOUBLE EAGLE DOUBLE EAGLE PETROLEUM CORPORATION DOUBLE PLAY OIL & GAS, INC. DOUGLAS J. FLINT DOVE CREEK ENERGY, INC. DOWNING-NELSON OIL CO., INC. DOWNING-NELSON OIL COMPANY, INC. - US DREILING OIL INC DRILLMAR OIL & GAS, INC. DRILLMAR OPERATING COMPANY DRY FORK PRODUCTION CO. DTE GAS DUCK CREEK ENERGY DUGAN PRODUCTION DUKE ENERGY DUNCAN OIL DUNE OPERATING COMPANY DUNLAP EXPLORATION COMPANY DUNNE EQUITIES, INC. DURANGO RESOURCES CORPORATION DWR OIL COMPANY, INC. DYAD PETROLEUM DYNAMIC EXPLORATION DYNAMIC EXPLORATION, INC. - US DYNAMIC PRODUCTION INC. E. B. BROOKS, JR. E.N. PATTON OIL COMPANY E.S. NICHOLS EXPLORATION EAGLE OIL & GAS EAGLE OPERATING, INC. EAGLE ROCK ENERGY PARTNERS EAGLE ROCK OPERATING COMPANY, LLC EAGLERIDGE OPERATING, LLC EARLSBORO ENGINEERING CORP. EAST RESOURCES EAST RESOURCES, INC. EASTERN AMERICAN ENERGY EASTERN AMERICAN ENERGY CORPORATION ECA HOLDINGS LP ECCO DRILLING, LLP ECHO PRODUCTION EDDE DRILLING EDEN ENERGY COLORADO, LLC EDGE PETROLEUM EDGE RESOURCES OPERATING, LLC EDWARD MIKE DAVIS, LLC EEC, INC. EGL RESOURCES EL PASO EL PASO ENERGY ELEMENT PETROLEUM OPERATING, LLC ELK RESOURCES ELLORA OPERATING LP ELM RIDGE EXPLORATION COMPANY, LLC EMPRESA ENERGY, LP. ENCANA ENCO EXPLORATION CO. ENCO EXPLORATION COMPANY - US ENCON SERVICES ENCORE ENCORE OPERATING LP ENDEAVOR ENERGY RESOURCES ENDEAVOR ENERGY, LLC ENDEAVOR NATURAL GAS, LP ENDURING RESOURCES ENERFIN RESOURCES ENERGEN RESOURCES ENERGY CORP. OF AMERICA ENERGY FROM TEXAS ENERGY OPERATIONS OKLAHOMA, LP ENERGY PARTNERS ENERGY PROPERTIES INC ENERGY RESOURCE TECHNOLOGY GOM, INC. ENERGY RESOURCE TECHNOLOGY, INC. ENERGY RESOURCES AMERICA ENERGY RESOURCES TECHNOLOGY ENERGY XXI SERVICES ENERGY XXII SERVICES LLC ENERGYQUEST II, LLC ENERMARK - ENERPLUS ENERPLUS RESOURCES USA CORPORATION ENERQUEST CORPORATION ENERQUEST PETROLEUM ENERVEST OPERATING LLC ENEXCO ENI PETROLEUM ENRICH OIL ENSIGHT ENERGY MANAGEMENT LLC ENTERPRISE PRODUCTS OPERATING, LLC ENTERPRISE TEXAS PIPELINE, LLC EOG RESOURCES EQT PRODUCTION COMPANY (PA) EQUITABLE RESOURCES EQUITY OIL & GAS FUNDS, INC. ERG RESOURCES, LLC ERGON ENERGY ERSKINE ENERGY ESCONDIDO RESOURCES II, LLC ESCONDITO RESOURCES GROUP, LLC ESP DEVELOPMENT INC. ESPADA OPERATING, LLC ESSENJAY OPERATING ETOCO ETOCO, INC. EUREKA DRILLING COMPANY EVEREST MINERAL CORPORATION EVEREST RESOURCE COMPANY EVERSTON EVERTSON COMPANIES EVOLUTION OPERATING COMPANY, INC. EXARO ENERGY LLC EXCALIBUR EXPLORATION, INC. EXCO OPERATING COMPANY, LP EXCO PARTNERS OPERATING PARTNERSHIP EXCO PRODUCTION COMPANY, LP EXCO RESOURCES EXCO RESOURCES, INC. EXL PETROLEUM LP EXPERT OIL & GAS EXPRESS OIL CO. EXPRO ENGINEERING EXXCEL PRODUCTION COMPANY EXXONMOBIL Energy Production Corporation F. HOWARD WALSH, JR. F.L. BEARD FAIR OIL COMPANY FAIRWAY RESOURCES OPERATING, LLC FAIRWAYS FAIRWAYS EXPLORATION & PRODUCTION, LLC FAIRWAYS OFFSHORE EXPLORATION FALCON RESOURCES, INC. FAMCOR OIL FASKEN OIL & RANCH FIDELITY EXPLORATION & PRODUCTION CO. FIML NATURAL RESOURCES FIML NATURAL RESOURCES, LLC FINGER OIL & GAS, INC. FINLEY RESOURCES FIRST LIBERTY FIRSTRIKE ENERGY CORPORATION FISCHER & FISCHER OIL, LLC FIVE STAR ENERGY, INC. FIVESTONES ENERGY, LLC FLASH GAS AND OIL FLASH GAS AND OIL NORTHEAST, INC. FLATIRONS RESOURCES, LLC FLEX ENERGY LLC FLYING J EXPLORATION AND PRODUCTION FOOTHILLS CALIFORNIA INC FOOTHILLS OIL & GAS, INC. FOOTHILLS TEXAS, INC. FOREST OIL FOREXCO INC. FORREST DRILLING COMPANY, LLC FORT APACHE ENERGY, INC. FORTRESS ENERGY FORTSON OIL CO. FORTUNA (U.S.) INC. FORTUNA (U.S.) LP FORTUNE ENERGY INC FORTUNE ENERGY, INC. FORTUNE PRODUCTION FORZA OPERATING, LLC FOSSIL CREEK RESOURCES, LLC FOSSIL ENERGY GROUP, LLC FOSSIL OPERATING, INC. FOUNDATION ENERGY MANAGEMENT, LLC FOUNTAIN OIL COMPANY FOUR-C OIL AND GAS FOXBOROUGH ENERGY COMPANY, LLC FRAM OPERATING , LLC FRED WILSON DRILLING COMPANY FREEPORT OIL CO FROST BROTHERS FULLER PRODUCTION INC. FUTURE OIL AND GAS, INC. FUTURE PETROLEUM COMPANY, LLC G & F OIL, INC. GAEA SERVICES, INC. GAITHER PETROLEUM GALAXY OIL CO GALLAGHER DRILLING. CO. GARY-WILLIAMS PRODUCTION COMPANY GASCO ENERGY GASCO ENERGY, INC. GASCO, INC. GASTAR EXPLORATION TEXAS LP GEMARMI, INC. GENE STALNAKER GEO-SOUTHERN ENERGY GEO-VEST OF TEXAS, INC. GEODOMINION PETROLEUM GEOMARK RESOURCES LLC GEONATURAL RESOURCES GEORESOURCES, INC. GEORGE R. BROWN GEORGE R. BROWN PARTNERSHIP GERRY HESS OPERATING GHK COMPANY GHK CORPORATION GIANT OPERATING, LLC GIBRALTAR ENERGY COMPANY GIEBEL PETROLEUM LTD GILBERT STEWART OIL GINGER OIL COMPANY GLACIER PETROLEUM COMPANY GLB EXPLORATION GLENN SUPPLY GLOBALSANTAFE GMT EXPLORATION GMT INC. GMX RESOURCES GMX RESOURCES INC GNAD OIL, LLC GOLDCO OPERATING, LLC GOLDEN EAGLE DRILLING CO. GOLDEN EAGLE EXPLORATION, LLC GOLDEN ENERGY PARTNERS, LLC GOLDEN RESOURCES CO. GOLDEN TRIANGLE STORAGE, INC. GOLDSBERRY OPERATING GOLDSTON OIL GOMEX ENERGY OFFSHORE, LTD. GOODRICH GOODRICH PETROLEUM CORPORATION GORDY OIL GORE OIL COMPANY GRAND MESA OPERATING COMPANY GRAND OPERATING GRANITE OPERATING COMPANY GRAWARD OPERATING GREAT BAY OPERATIONS, LLC GREAT LAKES ENERGY PARTNERS LLC GREAT OAK ENERGY GREAT PLAINS PETROLEUM, INC. GREAT TEXAS CRUDE, INC. GREAT WESTERN GREAT WESTERN OIL & GAS COMPANY, LLC GREEHEY & CO LTD GREY WOLF GREYSTONE DRILLING LP GRIFFIN AND GRIFFIN OIL GRIFFIN OPERATING, INC. GRIFFIN PETROLEUM COMPANY GRUY PETROLEUM MANAGEMENT CO., LLC (NON CIMAREX)) GRYNBERG EXPLORATION GRYNBERG PETROLEUM CO. GRYPHON EXPLORATION GUICHARD GULF EXPLORATION LLC GULF PRODUCTION CORPORATION GULF SOUTH OPERATORS, INC. GULFPORT ENERGY GULFPORT ENERGY CORPORATION - US GULFSTAR PROPERTIES, INC. GULFTEX OPERATING, INC GUNGOLL GUNN OIL CO GUNN OIL CO. GUNNISON ENERGY CORPORATION GUSTAVSON AND ASSOC. H & B PETROLEUM CORPORATION H & L EXPLORATION COMPANY, LLC H AND B SALES AND DELIVERY H AND L OPERATING CO. H AND M OIL PRODUCERS H AND M PETROLEUM H. P. ELLSWORTH OIL AND GAS PROPERTIES H.L. BROWN OPERATING, LLC H.P. ELLSWORTH OIL AND GAS PROPERTIES HAD INC. HALE OIL COMPANY HALEK ENERGY, LLC HALL HOUSTON HALL-HOUSTON EXPLORATION II, LP HALLIBURTON HALLIBURTON PROJECT MANAGEMENT HALLWOOD HALVEY ENERGY CO. HAMILTON, J. R. HAMMAN HANKEY OIL CO. HANNA OIL AND GAS HANNA OIL AND GAS COMPANY - US HANNATHON PETROLEUM, LLC HARD ROCK EXPLORATION HARDEE PETROLEUM HARDEE PETROLEUM COMPANY HARDING HARDING & SHELTON HARLETON OIL AND GAS HARPER AND HEFTE HARRISON HARSH INTERNATIONAL, INC. HARTMAN OIL COMPANY, INC. HARVARD PETROLEUM HARVEST (US) HOLDINGS, INC. HARVEST OIL & GAS, LLC HAWTHORNE OIL AND GAS HAY EXPLORATION HEADINGTON OIL & GAS HEADINGTON OIL COMPANY, LP HEDC OPERATING, INC. HEIGHTS ENERGY CORPORATION HEIGHTS OPERATING HELIS HELIS OIL & GAS LLC HENDERSON & ERICKSON, INC. HENRY PETROLEUM, LP HENRY PRODUCTION HENRY RESOURCES, LLC HEP HERITAGE STANDARD CORP. HERTEL OIL CO. HESS CORPORATION HGN OPERATING I, LLC HIGH PLAINS DISPOSAL HIGH PLAINS DRILLING COMPANY HIGH PLAINS OPERATING COMPANY, LLC (CA) HIGH SKY PARTNERS, LLC HIGHLAND OIL & GAS COMPANY (NM) HIGHLAND OIL AND GAS, LLC HIGHLAND OIL AND GAS, LLC (AR) HIGHMOUNT EXPLORATION & PRODUCTION, LLC HILCORP ENERGY HILL DRILLING HILL OIL CO HILLWOOD ENERGY TEXAS, LP HOGBACK EXPLORATION HOGBACK EXPLORATION, INC. - US HOLLEY OIL COMPANY HOLLIMON OIL HOLLIMON OIL CORPORATION- US HOLMES EXPLORATION HORIZON HORIZON ENERGY CORP HORIZON PRODUCTION & OPERATING, LLC HOUSTON ENERGY, LP HOUSTON EXPLORATION HOUSTON OIL PRODUCING HOWARD EXPLORATION HOWELL OIL AND GAS HOWELL OIL AND GAS INC. HOWELL PETROLEUM HUDSON OIL COMPANY OF TEXAS HUDSON RANCH I, LLC HUNT OIL HUNT PETROLEUM HUNTINGTON HURD ENTERPRISES HURD ENTERPRISES, LTD. - US HUSKY HUSKY VENTURES, INC. HYDROEX, INC. HYQUEST ENERGY I A OPERATING IA OPERATING ICA ENERGY OPERATING, LLC ICELAND AMERICA ENERGY INC. IMAGERY EXPLORATION, INC. IMPERIAL GAS RESOURCES, LLC INCLINE ENERGY, INC. INCLINE RESERVE INC INCREMENTAL PETROLEUM (USA) INC. INDIGO MINERALS, LLC INTEGRATIVE OPERATING CORPORATION INTREPID OIL AND GAS IOCHEM CORPORATION IVY ENERGY LLC J & R OIL COMPANY, LLC J B DRILLING J D GAS INC. J W OPERATING CO J-BREX COMPANY J.R. POUNDS, INC. J.W. WILLIAMSON OIL COMPANY JACK EXPLORATION INC JACK PHILLIPS JACO OIL COMPANY JAG OPERATING, LLC JAMES A. WHITSON, JR. JAMEX JASON OIL COMPANY JC WILLIAMSON JENEX PETROLEUM JET BLACK OIL, INC. JETTA PRODUCTION JGC ENERGY DEVELOPMENT (USA), INC. JICARILLA APACHE ENERGY CORPORATION (JAECO) JIL OIL CORPORATION JLN, INC. JLN, INC./JOSEPH L. NALLY JM COX RESOURCES JMA JMA ENERGY COMPANY LLC JMA ENERGY COMPANY OF TEXAS, LLC JOHN H. YOUNG, INC. JOHN O FARMER, INC JOINT RESOURCES CO. JOLEN OPERATING CO JONES ENERGY JORDAN OIL JORDAN OIL COMPANY, INC. JOY RESOURCES JOY RESOURCES, INC. JUNG OPERATING COMPANY, LLC JUNIPER RESOURCES JUSTISS DRILLING COMPANY JUSTISS OIL CO., INC. JW DRILLING JW OPERATING JW RESOURCES K T OPERATING COMPANY, LLC KABCO OIL AND GAS KAISER-FRANCIS KAL ENERGY, INC. KALER ENERGY CORPORATION KALKMAN OIL CORPORATION KASH OIL AND GAS, INC. KATANA ENERGY, LLC KATY RESOURCES ETX, LLC KBE ENERGY, INC. KCS KEBO OIL AND GAS, INC. KEENER OIL AND GAS KEITH F. WALKER OIL & GAS COMPANY, LLC KELLY OIL CO. KELPETRO OPERATING, INC. KEN PETROLEUM KENNETH W. CORY KENNETH WHITE KERN COMPANY KERNS PETROLEUM, INC. KEY ENERGY KEYSTONE ENERGY CORP KEYSTONE EXPLORATION, INC. KEYSTONE OIL AND GAS, INC. KEYSTONE PETROLEUM KFG PETROLEUM CORPORATION KILLAM OIL COMPANY KIM RECOVERY ENTERPRISES, LLC KINDEE OIL & GAS LOUISIANA, LLC KINDER MORGAN KINDER MORGAN CO2 COMPANY, LP KING ENERGY KING OPERATING KING OPERATING CORPORATION - US KINGFISHER RES., INC KINGFISHER RESOURCES, INC KINGWOOD EXPLORATION, LLC KIRKPATRICK OIL CO KLONDIKE OIL & GAS, LP KNIGHTON OIL COMPANY, INC. KNOX ENERGY INC. KNOX ENERGY INC. (OHIO) KODIAK OIL & GAS (USA), INC. KOKOMO DRILLING, LLC KRAKER & MARTIN ENERGY, LLC KRESCENT ENERGY COMPANY KRITI EXPLOR. INC. KWB OIL PROPERTY MANAGEMENT, INC. L & J EXPLORATION, LLC L B EXPLORATION, INC. L E JONES OPERATING INC. L. B. BURLESON, INC. L. D. DRILLING INC. L. D. STACY OIL COMPANY L. R. FRENCH, JR. L.O.G. ENERGY EXPLORATION, LTD. LACY OPERATIONS, LTD. LADD OIL AND GAS CORPORATION LAKE RONEL OIL LAKEHILLS PRODUCTION, INC. LAKEWOOD PETROLEUM LAKOTA ENERGY LAKOTA ENERGY, LTD. LAMARCO OPERATING, INC. LAMAY CORP. LANCE RUFFEL OIL & GAS LAND, INC. LANDMARK ENERGIES LANDMARK EXPLORATION LANDMARK EXPLORATION INC. LANE OPERATING LAPIS LEASING LARAMIE ENERGY LAREDO ENERGY LAREDO ENERGY, LP LAREDO PETROLEUM INC. LARIO OIL AND GAS CO LARSON ENGINEERING, INC. LAST RUN, LLC LATIGO LATIGO OIL AND GAS INC LATIGO PETROLEUM INC LAVANCO ENERGY, INC. LAVANCO ENERGY, LTD. - US LAYLINE PETROLEUM I, LLC LAYTON ENERGY LCS PRODUCTION LCX ENERGY, LLC LEAF RIVER ENERGY CENTER, LLC LEBSACK OIL PRODUCTION, INC. LECLAIR OPERATING LECLAIR OPERATING COMPANY, INC.- US LEED ENERGY LEED PETROLEUM, LLC LEGACY LEGACY OPERATING LEGADO MIDCON, LLC LEGADO PERMIAN, LLC LEGEND NATURAL GAS LEGEND NATURAL GAS LP LEWIS ENERGY LEWIS OIL CORPORATION LEXGAS, INC. LIBERTY PETROLEUM LIBERTY PIONEER ENERGY SOURCE, INC. LIGHTHOUSE OPERATING, INC. LIGHTNING OIL CO. LIME ROCK RESOURCES LIME ROCK RESOURCES A, LP LIMESTONE EXPLORATION, LLC LINN ENERGY, LLC LINN OPERATING, INC. LINN OPERATING, LLC LITTLE RIVER ENERGY COMPANY LIVE OAK ENERGY, INC. LIVE OAK LIMITED LIVE OAK RESERVES, INC LLOG EXPLORATION LMP PETROLEUM, INC. LOBO EXPLORATION CO. LOBO EXPLORATION COMPANY - US LODI GAS STORAGE LONESTAR OIL COMPANY LONGBOW, LLC LONGBRANCH ENERGY, LP LONGFELLOW ENERGY, LP LONGVIEW PRODUCTION CO. LOTHIAN OIL INC. LOUISIANA DELTA OIL CO., LLC LOUISIANA GAS DEVELOPMENT CORP LOUISIANA GAS DEVELOPMENT CORPORATION LOUTEX PRODUCTION COMPANY LUFF EXPLORATION LYMAC EXPLORATION AND PRODUCTION, LLC LYNN DRILLING CO LYNX LYNX OPERATNG COMPANY, INC. M & B OPERATING COMPANY M & G DRILLING COMPANY, INC. M & M ROYALTY, LTD. M M RESOURCES, INC. M'RED PETROLEUM, LLC - US M-RED PETRO. COMPANY M. E. OPERATING MACHIN AND ASSOCIATES MACK ENERGY MACPHERSON OIL CO MACPHERSON OIL COMPANY - US MACQUARIE LONGVIEW ACQUISITIONS MAGELLAN EXPLORATION & PRODUCTION HOLDINGS, INC. MAGNET OIL, LP MAGNUM MAIN ENERGY MAJOR DRILLING GROUP MAK-J ENERGY WYOMING, LLC MANDALAY OIL & GAS, LLC MANHATTAN PETROLEUM, INC. MANTI OPERATING MANTI RES., INC. MANZANO OIL MANZANO, LLC MARALEX RESOURCES MARATHON MARBOB ENERGY MARIC DRILLING COMPANY MARINER ENERGY MARITECH MARITECH RESOURCES MARJAC OIL CO MARJO OIL MARLIN COASTAL, LLC MARLIN ENERGY MARLIN EXPLORATION MARLIN OIL CORPORATION MARQUEE CORP. MARSHALL AND WINSTON MARTIN-MARKS OPERATING COMPANY, LLC. MAS OPERATING COMPANY MATADOR PRODUCTION MATADOR PRODUCTION COMPANY MATRIX ENERGY MATRIX OIL CORP. MAVERICK BROTHERS RESOURCES LLC MAVERICK DRILLING, INC. (OKLAHOMA) MAVERICK PRODUCTION COMPANY, INC. MAXIMA ENERGY CORP MAXIMUS OPERATING LTD MAYNE & MERTZ MCBEE OPERATING COMPANY, LLC MCCLELLAN OIL MCCLURE OIL CO. MCCLYMOND, LTD. MCCOMBS ENERGY, LLC MCCOY PETROLEUM CORP MCCOY PETROLEUM CORPORATION - US MCCUTCHIN PETROLEUM CORPORATION MCDONALD & JOHNSON RESOURCES, LLC MCENCO, INC. MCGEE DRILLING CORP. MCKAY OIL MCMORAN OIL & GAS MCMORAN OIL & GAS LLC MCPHERSON, YATES & FLIPPIN, LLC MEADCO PROPERTIES MEADE ENERGY CORPORATION MEDALLION EXPLORATION MELROSE OPERATING MENOAH PETROLEUM, INC. MERIDIAN MERIDIAN RESEARCH AND EXPLORATION CO., LLC MERIDIAN RESOURCES USA, INC. MERIT ENERGY MERITAGE ENERGY COMPANY MERRION OIL & GAS MERRITT OPERATING MESSENGER PETROLEUM, INC. MESTENA MESTENA OPERATING, LTD. METANO ENERGY METANO ENERGY LP METRO SALTWATER DISPOSAL, INC. METROPLEX BARNETT SHALE, LLC MEWBOURNE MICA ENERGY CORP MICHIWEST ENERGY INC. MID-CONTINENT DRILLING CORPORATION MID-CONTINENT ENERGY OPERATING COMPANY MIDCO EXPLORATION MIDDLETON OIL CO MIDDLETON PETROLEUM, LLC MIDLAND ENERGY MIDLAND OIL AND GAS MIDNIGHT DRILLING, LLC MIDROC OPERATING CO. MIDROC OPERATING COMPANY - US MIDSTATES PETROLEUM MIDSTATES PETROLEUM COMPANY, LLC MIDVILLE ENERGY, LLC MIDWESTERN EXPLORATION MIKE ROSS, INC. MILAGRO EXPLORATION MILAGRO EXPLORATION, LLC MILAGRO EXPLORATION, LP MILESTONE OPERATING MILLER DYER COMPANY MINERAL RESOURCES MIRADA PETROLEUM CORP. MIRAMAR PETROLEUM MISSION RESOURCES MISSISSIPPI POWER COMPANY MISSOURI BASIN WELL SERVICE INC MLC OPERATING, LP MODERN EXPLORATION MOHICAN OIL & GAS, LLC MOMENTUM MONTELLO RESOURCES USA LTD. MONUMENT DRILLING COMPANY MONUMENT GAS MARKETING, INC. MOON HINES TIGRETT OPERATING IN MOREXCO OIL AND GAS CO MORTIMER EXPLORATION MOSBACHER ENERGY MOUNTAIN VALLEY OIL AND GAS MUELLER ENGINEERING CORP. MULL DRILLING CO., INC. MULLOY OPERATING, INC. MURCHISON OIL & GAS MUREX PETROLEUM, INC. MURFIN DRILLING MURPHY OIL MURRAY HILL ENERGY, INC. MURVIN AND MEJER OIL COMPANY MUSTANG DRILLING LTD MUSTANG ENERGY MUSTANG FUEL MYCO NADEL & GUSSMAN NAKNEK ELECTRIC ASSOCIATION NANA OIL AND GAS, INC. NANCE PETROLEUM NAPCUS NATIONAL ONSHORE, LP NAUMANN OIL AND GAS CO NAUTILUS EXPLORATION NAVAJO NATION OIL & GAS COMPANY, INC. NAVIDAD RESOURCES, LLC NAVITAS OIL & GAS, LLC NCEY HOLDINGS, LLC NCL NATURAL RESOURCES, LLC NCPA NCX COMPANY NEARBURG NEG OPERATING NELSON EXPLORATION CORPORATION NELSON OIL AND GAS NEUMIN PRODUCTION NEUMIN PRODUCTION COMPANY NEVADA GEOTHERMAL POWER, INC. NEW CENTURY NEW DOMINION NEW DOMINION, LLC NEW GULF OPERATING, LLC NEWCORE ENERGY, LLC NEWFIELD NEWGULF PETROLEUM LLC NEXEN NFR ENERGY LLC NGO DEVELOPMENT CORPORATION NIELSON ENERGY GROUP, LLC NIPPON NIPPON OIL EXPLORATION NOBLE ENERGY NORNEW NORNEW, INC. NORSTAR PETROLEUM INC. NORTH SOUTH OIL, LLC NORTH AMERICAN DRILLING CORPORATION NORTH AMERICAN PETROLEUM CORP. USA NORTH AMERICAN RESOURCES CO. NORTH COAST ENERGY NORTH COAST ENERGY EASTERN, INC. NORTH FINN, LLC NORTH SHORE ENERGY, LLC NORTH STAR OPERATING COMPANY NORTH TEXAS LLANO NORTH TEXAS LLANO OPERATING CO NORTHCOAST OIL NORTHERN LIGHTS OIL CO. NORTHSTAR AR GOM, LLC NORTHWEST GEOTHERMAL CO. NORTHWEST PETROLEUM INC. NORTHWEST SERVICES NORTON ENERGY DRILLING NOVO EXPLORATION NOVUS OPERATING, LLC NYTEX CORPORATION O'BENCO O'BRIEN ENERGY O'BRIEN OPERATING O'BRIEN RESOURCES, LLC O'RYAN OIL & GAS O. H. M. OPERATING OASIS PETROLEUM NORTH AMERICA, LLC OBENCO INC OCCIDENTAL ODYSSEY PETROLEUM OEX-1, LLC OGDEN RESOURCES, LTD. OGE DRILLING OGX RESOURCES OGX RESOURCES LLC OHIO VALLEY ENERGY SYSTEM OIL PRODUCERS, INC. (KANSAS) OKLAND OIL OKT RESOURCES, LLC OLSEN ENERGY OMAR OPERATING CO ONE TEC OPERATING LLC ONEOK TEXAS GAS STORAGE, LLC OOLITE ENERGY CORPORATION OPAL RESOURCES OPERATING COMPANY, LLC ORACLE RESOURCES, LTD. ORBIT CRUDE, INC. ORBIT DRILLING INC ORCA OPERATING COMPANY, LLC ORCHARD PETROLEUM CO. ORION ORION ENERGY PARTNERS ORMAT ORMATT ORR ENERGY LLC ORX RESOURCES OSBORN HEIRS COMPANY OSO OIL & GAS PROPERTIES, LLC OVATION ENERGY LP OZ GAS P.O.&G. OPERATING, LLC PABLO ENERGY, INC. PAC DRILLING, LLC PACESETTER ENERGY INC. PAGE OPERATING, LLC PAINT ROCK OPERATING, LLC PALADAR INVESTMENTS I, LLC PALADIN ENERGY CORP PALADIN PETROLEUM PALM ENERGY OFFSHORE, LLC PALMER OIL AND GAS CO PALMER PETROLEUM, INC PALOMA RESOURCES PALOMA RESOURCES LLC PALOMINO PETROLEUM COMPANY, LLC PANAMERICAN OPERATING, INC. PANOCHE ENERGY CENTER PANTERA ENERGY CO. PANTHER BAYOU ENERGY, LLC PANTHER ENERGY PAR MINERALS PARAGON CORP PARALLEL PETROLEUM CORPORATION PARSLEY ENERGY OPERATIONS, LLC PARTEE DRILLING, INC. PARTEE ENTERPRISES PARTEN OPERATING, INC. PATARA OIL & GAS, LLC PATHFINDER EXPLORATION, LLC PATRIOT DRILLLING PATRIOT ENERGY RESOURCES (OK) PATRIOT EXPLORATION CORP. PATRIOT RESOURCES, INC. PATRIOT RESOURCES, INC. (TX) - US PATRON ENERGY, LLC PATTERSON PETROLEUM PATTERSON PETROLEUM, LP PATTERSON PRODUCTION PATTERSON-UTI PAUL GILLHAM OIL CO. PAXCO, INC. PAXTON MADISON, LLC PAXTON OIL CO. PB ENERGY STRORAGE SERVICES INC. PDC CORPORATION PDC-WV-CO CORPORATION PDH ENTERPRISES PEAK ENERGY PEAK NORTH DAKOTA, LLC PEBA OIL AND GAS CO. PED OIL PEDERNALES PRODUCTION, LP PEL-TEX CORP. PENN VIRGINIA OIL & GAS PENNECO OIL COMPANY, INC. PENNINGTON OIL AND GAS PENNSYLVANIA GENERAL ENERGY CORPORATION PENROC OIL CORPORATION PEOPLES ENERGY PEP DRILLING COMPANY PEREGRINE DRILLING COMPANY PEREGRINE OIL & GAS II, LLC PETERSON ENERGY OPERATING, INC. PETRO HUNTER ENERGY CORP. PETRO MAX ENERGY PETRO-CANADA PETRO-CANADA RESOURCES (USA), INC. PETRO-CRUDE PETRO-HUNT PETRO-HUNT LLC PETROBRAS PETROCANADA PETROCHEM OPERATING PETROGAS GC, INC. PETROGULF PETROGULF CORP. PETROHAWK PETROHAWK ENERGY PETROHAWK OPERATING COMPANY PETROLEUM DEVELOPMENT PETROLEUM MANAGEMENT, LLC PETROLEUM PROFESSIONALS PETROLEUM RESOURCES PETROMAX OPERATING CO. PETROPLEX ENERGY INC. PETROPRO ENERGY PARTNERS, LP PETROQUEST ENERGY PETSEC ENERGY PHILCON DEV. CO. PHILLIPS EXPLORATION COMPANY, LC PHOENIX EXPLORATION PHOENIX EXPLORATION COMPANY, LP - US PHOENIX HYDROCARBON PHOENIX PETROCORP, INC. PHOENIX PETROLEUM COMPANY PIEDRA OPERATING, LLC PIERCE PETROLEUM PINE MOUNTAIN OIL & GAS, INC. PINE RIDGE OIL & GAS, LLC PINNACLE OPERATING PINTAIL PETROLEUM LTD. PIONEER EXPLORATION COMPANY LLC PIONEER EXPLORATION COMPANY LTD PIONEER NATURAL RESOURCES PIONEER OIL COMPANY, INC. PITTS ENERGY PLAINS PLANO PETROLEUM, LLC PLANTATION OPERATING LLC PLATINUM ENERGY RESOURCES, INC. PLAYA OIL AND GAS, LP PLYMOUTH EXPLORATION, LLC PMO POGO POGO PANHANDLE 2004, LP PONDEROSA OIL & GAS, LLC POPP OPERATING, INC. POVERTY OIL, LLC POWER RES. OPER. PREMIER ENERGY, LLC PREMIER OIL & GAS PREMIER OIL & GAS, INC. PREMIUM WELL DRILLING, INC. PRESCO INC PRESCO WESTERN PRESCO WESTERN, LLC - US PRESIDIO EXPLORATION PRESIDIO OIL COMPANY PRESTON EXPLORATION LLC PRIDE ENERGY PRIMA OIL AND GAS CO. PRIME OPERATING PRIME OPERATING COMPANY - US PRIMERO OPERATING PRIMEX OPERATING CORPORATION PRINCESS THREE CORP. PRINCETON NATURAL GAS, LLC PRIZE PETROLEUM, LLC PROBE OFFSHORE, LLC PROBITY ENERGY PARTNERS, LLC PROBITY OPERATING, LLC PRODUCTION DRILLING, INC. PROGRESS DRILLING, INC. PROLIFIC RESOURCES, LLC PROTEGE ENERGY, LLC. PROTON OPERATING COMPANY, LLC PROVIDENT OPERATING COMPANY LLC PRUET PRODUCTION PRUET PRODUCTION CO PUNA GEOTHERMAL PURVIS OIL CORP. PXP LOUISIANA, LLC PYRAMID OIL CO. Payne Exploration QUANICO OIL AND GAS QUANTUM DRILLING CO QUANTUM INDUSTRIES I QUANTUM RESOURCES MANAGEMENT, LLC QUEST EXPLORATION QUESTAR QUICKSILVER RESOURCES QUINQUE OPERATING CO QUINTIN LITTLE COMPANY R C TAYLOR COMPANIES INC R&R DRILLING CO. R. C. POLING CO. R. K. PETROLEUM R. L. ADKINS CORP. R. M. HILL OPERATING, INC. RABB CONTRACTING COMPANY, LLC RAINS-WILLIAMSON OIL CO., INC. RAM OPERATING COMPANY RAMPART ENERGY COMPANY RAMSEY ASSOC.PETROL. RAMSEY PROPERTY MANAGEMENT, INC RANGE DRILLING COMPANY RANGE RESOURCES RANKEN ENERGY CORPORATION RASER TECHNOLOGY RAVEN OPERATING GROUP INCORPORATED RAW OIL & GAS RAY HERRING RAY RICHEY MANAGEMENT CO INC. RAY WESTALL RAYDON EXPLOATION, INC. RAYMOND OIL CO INC READ & STEVENS READY DRILLING COMPANY REATTA ENERGY, INC. REBEL OIL CO. RED ARROW ENERGY, LLC RED FORK (USA) INVESTMENTS, INC. RED GAP OIL & GAS, LLC RED OAK ENERGY INC. RED OAK GAS OPERATING COMPANY, LP RED OAK GAS OPERATING COMPANY, LP (TX) RED RIVER ARK-LA-TEX DRILLING RED ROCK OPERATING, INC. RED WILLOW GREAT PLAINS, LLC RED WILLOW MID-CONTINENT, LLC RED WILLOW PRODUCTION RED-X EXPLORATION AND PRODUCTION, LLC REDEMPTION OIL & GAS, LLC REDHAWK DRILLING, LLC REDLAND RESOURCES REED GAS, INC. REED OIL COMPANY REEDER OPERATING, LLC REEF EXPLORATION REEF, LLC RELIANCE ENERGY, INC. RELIANCE OIL COMPANY REMINGTON RESOURCES REMORAL MANAGEMENT, LLC RENAISSANCE PETROLEUM, LLC REPSOLYPF REPUBLIC ENGRY INC REPUBLIC RESOURCES RESACA RESOURCES, LLC RESERVE MANAGEMENT RESOLUTE NATURAL RESOURCES REVEILLE RESOURCES REX ENERGY OPERATING CORPORATION RICELAND PETROLEUM RICOCHET ENERGY RICOCHET ENERGY INC RIDDLE ENGINEERING CORPORATION RIDDLE OIL CO RIDGE PETROLEUM, INC. RIDGELAND WYOMING, INC. RIDGEWAY/ARIZONA OIL CORP. RIFE ENERGY OPERATING, INC. RIMROCK ENERGY, LLC RIMROD CORPORATION RIO-TEX RIPPY OIL RIPPY OIL COMPANY, INC. - US RISING STAR ENERGY OPERATING CO., LLC RITCHIE EXPLORATION RIVERSTONE ENERGY, LP RJD MANAGEMENT, INC. RKI EXPLORATION & PRODUCTION, LLC ROARING SPRINGS ENERGY, LTD. ROBERT E LANDRETH ROBERT E. BYRNE ROBINSON ROCA OPERATING, INC. ROCA RESOURCE CO. ROCK ENERGY RESOURCES, INC. ROCK SOLID OPERATING, LLC ROCKER A OPERATING CO. ROCKER A OPERATING COMPANY, INC. ROCKFORD ENERGY PARTNERS, LLC ROCKSOURCE ENERGY CORPORATION ROCKWOOD RESOURCES, INC. ROCO DRILLING AND SERVICE, INC. RODESSA OPERATING COMPANY ROFF OPERATING COMPANY, LLC ROGERS DRILLING COMPANY, INC. ROGERS OIL CO ROIL MINERAL AND LAND ROOSTH AND GENECOV PRODUCTION ROSETTA RESOURCES OPERATING, LP ROSS AND WHARTON GAS ROSS EXPLORATION, INC. ROUND ROCK RESOURCES, INC. ROUNDTREE & ASSOC ROUNDTREE ASSOC., INC. ROX EXPLORATION ROY E. KIMSEY, JR. ROYAL PRODUCTION CO. ROYALE ENERGY INC. ROZEL OPERATING RR VENTURES LIMITED PARTNERSHIP RUBICON OIL AND GAS LLC RUBIN RESOURCES RUNNING FOXES PETROLEUM, INC. RUSK ENERGY MANAGEMENT, LLC RUSSELL HALBIRT RUSSELL-FORT TRINIDAD OP, LLC RUST OIL CORPORATION RUTHERFORD OIL CO. RUTTER & WILBANKS CORP RUWCO OIL AND GAS RYDER SCOTT MANAGEMENT, LLC RYHOLLAND FIELDER, INC. S & W OIL & GAS, LLC S G INTERESTS S. B. OIL COMPANY S. GARY, JR. AND ASSOC. S. K. ROGERS OIL CO. S. LAVON EVANS S. LAVON EVANS, JR. OPERATING CO., INC. SABCO SAGA PETROLEUM SAGE ENERGY SAGE ENERGY COMPANY SAGEBRUSH RESOURCES, LLC SAMSON SAN ISIDRO DEVELOPMENT COMPANY, LC SAN JUAN RESOURCES SANCHEZ OIL & GAS SANCHEZ OIL AND GAS CORP. SAND HILL FOUNDATION, LLC SANDALWOOD SANDALWOOD OIL AND GAS SANDERS OIL & GAS, LTD. SANDHAWK ENERGY, LLC SANDRIDGE ENERGY SANDRIDGE TERTIARY, LLC SANGUINE GAS EXPLORATION SANTANA ENERGY SERVICES, LLC SANTOS SARITA ENERGY RESOURCES, LTD. SAUDER MANAGEMENT SAVANT ALASKA, LLC SAXUM OIL & GAS, LLC SCHALK DEVELOPMENT COMPANY SCHALK OIL COMPANY, INC. SCHOFIELD OIL CO. SCHREINER OIL AND GAS INC SDX RESOURCES SE USA OPERATING, INC. SEABOARD OIL CO SEC PRODUCTION, INC. SEDNA ENERGY, INC. SEDONA OIL AND GAS SEELY OIL CO. SEMPRA SENDERO RESOURCES SENECA SEQUOIA PRODUCTION, LLC SG INTERESTS I, LTD. SHA-JAM OPERATING SHAKESPEARE OIL CO INC. SHARON RESOURCES SHARP IMAGE ENERGY SHELBY OPERATING COMPANY SHELBY RESOURCES, LLC SHELL SHELL EXPLORATION & PRODUCTION CO., INC. SHELL ROCKY MOUNTAIN SHENANDOAH SHERIDAN PRODUCTION COMPANY, LLC SHIELDS ENERGY INC. SHIELDS EXPLORATION SHOCO PRODUCTION, LP SHORELINE SOUTHEAST LLC SHULER DRILLING.CO., INC. SIANA OIL AND GAS, LLP SIERRA GEOTHERMAL POWER, INC. SIERRA RESOURCES SIERRA RESOURCES, INC. SIGNAL HILL PETROLEUM INC. SILVER OAK OPERATING INC. SINCLAIR OIL & GAS COMPANY SIVADCO, LTD. SKLAR EXPLORATION SLAWSON EXPLORATION SLOAN PETROLEUM, INC. SMITH OPERATING AND MANAGEMENT COMPANY SMITH PRODUCTION COMPANY, INC. SNYDER PARTNERS SOCORRO ENERGY INC SOCORRO EXPLORATION, INC. SOJITZ ENERGY VENTURE, INC. SOJOURNER DRILLING CORPORATION SONERRA RESOURCES SONERRA RESOURCES CORPORATION SONTERRA OPERATING, INC. SOUTH BAY RESOURCES SOUTHERN BAY OPERATING, LLC SOUTHERN EXPLORATION SOUTHERN RESOURCE COMPANY SOUTHERN STAR OPERATING SOUTHLAKE EXPLORATION, INC. SOUTHWEST OPERATING INC. SOUTHWESTERN SPARTAN OPERATING COMPANY, INC. SPECIAL ENERGY CORP. SPECTRA ENERGY CORP SPECTRA ENERGY TRANSMISSION SPELLER OIL CORPORATION SPESS OIL CO. SPICER OIL COMPANY, INC. SPINDLETOP OIL CO. SPOONER PETROLEUM COMPANY SPRING OPERATING COMPANY SPRING RESOURCES SPRING RESOURCES, INC. SQUARE MILE ENERGY ST MARY ST OIL COMPANY STALNAKER ENERGY CORPORATION STAR PRODUCTION, INC. STATOIL STECKMAN RIDGE, LP STELBAR OIL CORP INC STELLER ENERGY STELZER DRLG CO STEPHENS AND JOHNSON OPERATING STEPHENS EXPLORATION, INC. STEPHENS PRODUCTION COMPANY STEPHENS PRODUCTION CO STERLING DRILLING COMPANY STETSON OIL & GAS CORPORATION STEWART PETROLEUM CORPORATION STONE STONEGATE PRODUCTION COMPANY, LLC STORM CAT ENERGY (USA) OPERATING CORP. STOVALL OPERATING STRACHAN EXPLORATION STRAND ENERGY STRAT LAND EXPLORATION STRATA PRODUCTION STRATASEARCH CORPORATION STREAM ENERGY, INC. STRIKE OIL, INC. STROUD PETROLEUM SUE-ANN OPERATING, LC SUEMAUR EXPLORATION SULLIVAN, HOLLIS R, INC SUMMIT ENERGY INC SUMMIT PETROLEUM, LLC SUMMIT RESOURCES INC. SUNDOWN ENERGY SUNDOWN ENERGY INCORPORATED SUNOCO SUNRAY ENERGY, INC SUNRAY OPERATING COMPANY, LLC SUPERIOR OIL & GAS, LLC SUTTON PRODUCING CORPORATION SWAN OILFIELD SERVICE SWANSON OILFIELD SERVICES, INC. SWARTZ OIL COMPANY SWEPI, LP SWIFT ENERGY SYNERGY T-C OIL CO T-N-T ENGINEERING T. H. MCELVAIN OIL AND GAS TALISMAN TAMMANY OIL & GAS, LLC TANA EXPLORATION COMPANY, LLC TANA OIL AND GAS TANOS EXPLORATION, LLC TARPON OIL TARPON OPERATING & DEVELOPMENT, LLC TAT, INC. TATUM PETROLEUM TAURUS OIL COMPANY TAYLOR ENERGY TEGA OPERATING COMPANY TELEO OPERATING, LLC TELESIS OPERATING COMPANY, INC. TELLUS ENERGY GROUP TELLUS ENERGY GROUP, LLC TEMA OIL & GAS TEMA OIL AND GAS COMPANY TEMBLOR PETROLEUM TEMPEST OIL CO TENSAS DELTA LAND TERRA-GEN DIXIE VALLEY TERRACE PETROLEUM CORP TERRITORY RESOURCES, LLC TEX-STAR PRODUCTION COMPANY TEXAKOMA OPERATING, LP TEXAS AMERICAN RESOURCES CO. TEXAS CRUDE TEXAS CRUDE ENERGY INC. TEXAS ENERGY SERVICES, LLC TEXAS GAS TRANSMISSION CORPORATION TEXAS GAS TRANSMISSION, LLC TEXAS INDEPEND.EXPLO TEXAS PETROLEUM CO TEXAS PETROLEUM INVESTMENT COMPANY TEXAS ROYALTY TEXAS STANDARD OIL OPERATING CO. TEXAS UNITED PRODUCTION COMPANY, LLC TEXCAL ENERGY TEXLAND PETROLEUM, INC. TGO OPERATING, LLC TGT PETROLEUM CORP. THE 7711 CORP THE CORYELL-OUACHITA GROUP, INC. THE EXPLORATION COMPANY THE GRAYROCK CORPORATION THE HOUSTON EXPLORATION COMPANY THE QUINTIN LITTLE COMPANY, INC. THE RIVER GAS CORPORATION THE TERMO COMPANY THERMASOURCE, INC. THOMAS OPERATING COMPANY, LTD. THOMPSON, J. CLEO THOROUGHBRED THORP PETROLEUM CORP. THREE SPAN OIL AND GAS THREE-R DRILLING AND PRODUCTION THRESHOLD DEVELOPMENT THUMS THUNDERBIRD DRILLING THURMAN DRILLING, INC. TIDAL PETROLEUM, INC. TIMBERLINE PRODUCTION CO., LLC TITAN DRILLING CO. TITAN OIL AND GAS CORP. TITAN OPERATING, LLC TITAN RESOURCES TMR EXPLORATION TNT OPERATING, LLC TOCE OIL COMPANY TOM BROWN TOP DRILLING INC. TOP DRILLING, INC. TORCH ENERGY TOTAL TOWNE EXPLORATION COMPANY TOWNER PETROLEUM CO. TRACKER RESOURCE DEVELOPMENT II, LLC TRANS-PACIFIC DRILLING, INC. TRANS-TEXAS ENERGY TRANSENERGY, INC. TRANSOCEAN TRANSPRO ENERGY, LLC TREK OPERATING, LLC TREK RESOURCES, INC. TREND EXPLORATION TRI POWER RESOURCES TRI STAR EXPLORATION TRI-C RESOURCES TRI-POWER RESOURCES, LLC TRI-VALLEY TRI-VALLEY OIL & GAS CORPORATION TRIAD TRIAD ENERGY, INC. TRIAD EXPLORATION LTD. TRIANA TRIANGLE THREE RESOURCES TRILOGY OPERATING TRINITY EAST ENERGY, LLC TRIO CONSULTING AND MANAGEMENT, LLC TRIO PETROLEUM INC. TRIUMPH ENERGY TRUE OIL TRUEBLOOD RESOURCES TSAR TURM OIL INC. TURNKEY E & P TURNKEY E & P CORPORATION TUSKAR TEXAS INC. TWISTED CEDAR RESOURCES, LLC TXCO RESOURCES, INC. TXOK ENERGY RESOURCES COMPANY TXP INC TYEE PRODUCTION CO LLC. TYLER OIL COMPANY U.S. ENERGY DEVELOPMENT CORPORATION U.S. EXPLORATION CORPORATION U.S. GEOTHERMAL INC. ULTRA ULTRA OIL AND GAS ULTRASTAR PETROLEUM, LLC UNDERGROUND SERVICES MARKHAM LP UNIOIL UNION GAS OPERATING UNION VALLEY PETROLEUM CORPORATION UNIT UNIT OPERATIONS, INC UNITED UNITED PETROLEUM DRILLING CO. UNITED PRODUCTION CO UNITED RESOURCES UNITED RESOURCES LP UNKNOWN CUSTOMER UNOCAL UPHAM OIL AND GAS CO. US ENERCORP US OPERATING UTAH GREAT EAGLE, LLC V. F. NEUHAUS PROPERTIES VA RESOURCES VA RESOURCES, LLC - US VAL ENERGY, INC. VALENCE VANGUARD OIL & GAS LLC VANGUARD PERMIAN, LLC VANTAGE ENERGY UINTA, LLC VANTAGE FORT WORTH ENERGY, LLC VARGAS ENERGY, LTD. VAUGHN GOOD OIL CO VENOCO VENTEX OPERATING VENTUM OIL & GAS, LP VENTURA ENERGY MANAGEMENT, LLC VENTURE OIL AND GAS VERADO ENERGY INC VESS OIL CORP. VIATHON HYDROCARBONS, INC VIKING DRILLING COMPANY VINCENT LANDAS VINCENT OIL CORPORATION VINLAND ENERGY, LLC VINTAGE CALIFORNIA PRODUCTION VINTAGE CALIFORNIA PRODUCTION LLC VIRGIN OFFSHORE VIRTEX OPERATING COMPANY, INC. VIRTEX PETROLEUM VIRTEX PETROLEUM COMPANY, INC. VISION EXPLOR AND PROD LLC VISTA OPERATING INC. VISTA RESOURCES INC VONCO OF MISSISSIPPI VOSKAMP EXPLORATION, INC. VOYAGER ENERGY, LLC VOYAGER PETROLEUM INC. VPR OPERATING, LLC VULCAN ENERGY CORP VULCAN POWER COMPANY W & T OFFSHORE W. A. MONCRIEF W. G. ARNOT, JR. WADI PETROLEUM, INC. WAGNER WAGNER AND BROWN WALLIS ENERGY, INC. WALSH PETROLEUM WALSH PRODUCTION INC WALSH RESOURCES, INC. WALTER EXPLORATION WALTER OIL & GAS WARD PETROLEUM WARD WILLISTON CO WARREN EXPLORATION WASHITA OIL & GAS, LLC WATERFORD OPERATING, LLC WCS PETROLEUM WEATHERFORD WEBER ENERGY WEEKS EXPLORATION WEINKAUF PETROLEUM, INC. WEISER-BROWN OIL CO WEISER-BROWN OPERATING COMPANY WELDER EXPLORATION, INC. WELHAUSEN OPERATING WELLCO WEST INLAND ENERGY WEST MOUNTAIN OPERATING CO., INC. WEST NEWPORT OIL COMPANY WEST STAR OPERATING COMPANY WESTERN CHIEF OIL & GAS WESTERN CHIEF OIL AND GAS CO WESTERN GEOPOWER INC. WESTERN OIL & GAS WESTERN OPERATING CO WESTERN PROD WESTERN RESERVES OIL COMPANY, INC. WESTPORT WFD OIL CORP WG OPERATING, INC. WHEELER ENERGY WHEELER ENERGY CO. WHITE OAK OPERATING WHITEHEAD DRILLING WHITEHEAD PRODUCTION COMPANY WHITING OIL & GAS WHITING PETROLEUM WIEPKING-FULLERTON WILCO OIL AND GAS WILCOX OPERATING CORPORATION WILDGOOSE GAS WILDHORSE RESOURCES, LLC WILL-DRILL PRODUCTION WILLIAMS WILLIAMS OIL CO. WILLIAMS PRODUCTION WILLIFORD ENERGY CO WILLSTAR ENERGY, GP, LLC WINCHESTER PRODUCTION WINDSOR ENERGY WINN EXPLORATION WINN EXPLORATION CO WN OPERATING, INC. WOLF ENERGY, INC. WOLF EXPLORATION, INC. WOLVERINE GAS & OIL WOLVERINE GAS AND OIL INC. WOODSIDE ENERGY WOOLSEY OPERATING COMPANY, LLC WTG EXPLORATION, INC WWXPLORATION, LLC WYNN CROSBY ENERGY XANADU EXPLORATION COMPANY XOG OPERATING, LLC XPLORE OPERATING, LLC XTO ENERGY XTREME OIL & GAS, INC. YALE OIL ASSOC. YATES DRILLING YATES PETROLEUM CO YUCCA ENERGY INC. YUKON OPERATING COMPANY, LLC YUMA PETROLEUM ZACHARY OIL OPER. ZACHRY EXPLORATION, INC. ZARGON OIL & GAS, LLC ZAVANNA, LLC ZENERGY ZENERGY OPERATING COMPANY, LLC ZENERGY, INC. ZEPHYR OPERATING COMPANY LLC _______________________________

Top Contractors/Operators