Search - Energy Domain

101 ENERGY CORPORATION

1849 ENERGY PARTNERS LLC

31 GROUP, LLC

31 OPERATING LLC

3-M ENERGY CORPORATION

3-T EXPLORATION INC

8 NORTH, LLC.

AAOC LP

ABERCROMBIE ENERGY LLC

ABRAXAS PETROLEUM CORPORATION

ACACIA ENERGY PARTNERS LLC

ACE GATHERING, INC

AC EXPLORATION, LLC

ACOMA OIL CORPORATION ORONO PRODUCTION CO.

A.C.T. OPERATING COMPANY

ADAMSON ENERGY LLC

ADMIRAL PERMIAN RESOURCES, LLC

ADPARO LLC

ADVANCE ENERGY PARTNERS LLC

ADVANCE HYDROCARBON CORP

ADVENTURE OPERATING CO LLC

AETHON ENERGY OPERATING LLC

AGAVE ENERGY, INC

AGL RESOURCES

AGP HOLDINGS OPER COMPANY LLC

AJAX RESOURCES LLC

ALLIED CRUDE PURCHASING INC

ALMONT ENERGY LLC

ALOG LLC

ALPHA HELIX ENERGY

ALPINE GAS OPERATOR, LLC

ALTA MESA RESOURCES, INC

ALTA MESA SRVCS, LP (NUECES)

ALTAMONT ENERGY OPERATING LLC

ALTMAN ENERGY

AMARILLO EXPLORATION INC

AMBER FIRE ENERGY, LLC

AMEREDEV OPERATING LLC

AMERICAN ENERGY - PERMIAN BASIN, LLC

AMERICAN FLOURITE, INC.

AMERICAN MIDSTREAM LLC

AMERICAN PETROLEUM CORP.

AMERICAN WARRIOR, INC.

AMERICO ENERGY RESOURCES, LLC

AMID ENERGY PRODUCTS SUPPLY LLC

AMPLIFY ENERGY OPERATING LLC

ANADARKO MINERALS, INC.

ANDERSON ENERGY INC.

ANDES PRODUCTION COMPANY LLC

ANEVAY RESOURCES LLC

ANGEL EXPLORATION LLC

ANOROC OIL & GAS CORPORATION

ANSCHUTZ OIL COMPANY

ANTERO RESOURCES

ANTIOCH OPERATING, LLC

APACHE

APPALACHIAN ENERGY, INC

APPALOOSA OPERATING CO., LLC

APPROACH OPERATING, LLC

ARBOR OPERATING

ARBUCKLE ENTERPRISES, INC

ARCADIA OPERATING LLC

ARCH OIL & GAS LLC

ARDMORE PRODUCTION AND EXPLORATION

ARENA ENERGY LLC

ARES ENERGY, LTD

ARK LA TEX ENERGY LLC

ARM ENERGY MANAGEMENT LLC

ARMSTRONG ENERGY CORP

ARMSTRONG OPERATING, INC.

ARNOLD OIL PROPERTIES LLC

ARP BARNETT LLC

ARP MOUNTAINEER PRODUCTION LLC

ARP PRODUCTION CO LLC

ARP RANGELY PRODUCTION LLC

ARRIS OPERATING COMPANY LLC

ARROWHEAD ENERGY, INC.

ARTEX OIL COMPANY

ARUBA PETROLEUM, INC

ASCENT ENERGY, LLC

ASCENT MIDSTREAM PARTNERS, LLC

ASPEN OPERATING COMPANY, LLC

ATCHLEY RESOURCES INC

ATLANTIC RESOURCES COMPANY, LLC

ATLANTIS OIL COMPANY INC

ATLAS ENERGY INDIANA LLC

ATLAS ENERGY, LP

ATLAS OPERATING LLC

ATLAS PIPELINE MID-CONTINENT LLC

ATLAS RESOURCES LLC

ATLAS RESOURCES PARTNERS

ATLS PRODUCTION CO LLC

ATMOS ENERGY

ATOKA OPERATING PERMIAN LLC

ATROPOS PRODUCTION CORPORATION

AUSTRALIS TMS INC

AUTERRA OPERATING LLC

AVAD OPERATING LLC

AVALANCHE OIL AND GAS LLC

AVALON ENERGY LLC

AVALON TX OPERATING, LLC

AXIA ENERGY II, LLC

BAH-PEPPER OPERATING LLC

BAKER RESOURCES LLC

BALLARD EXPLORATION COMPANY INC

BALLARD PETROLEUM HOLDINGS LLC

BANKHEAD OPERATING CORPORATION

BARBOUR ENERGY CORPORATION

BARON EXPLORATION COMPANY

BARROW SHAVER RESOURCES CO. LLC

BASA RESOURCES, INC.

BASS ENTERPRISES

BAYOU STATE OIL CORPORATION

BAYS EXPLORATION, INC.

BAYSWATER EXPLORATION & PRODUCTION, LLC

BAYTEX ENERGY

BAYTIDE PETROLEUM, INC

BBX OPERATING LLC

BCE-MACH LLC

BC OPERATING, INC.

BEACH EXPLORATION

BEARTOOTH OIL & GAS COMPANY

BEDROCK PRODUCTION, LLC

BEEHIVE OPERATING, LLC

BEE-JAY PETRO, INC.

BEND ARCH PETROLEUM INC

BENSON-MONTIN-GREER

BERENERGY

BEREXCO LLC

BERRY PETROLEUM COMPANY, LLC

BESCO LP

BETTIS, BOYLE & STOVALL INC

B & G PRODUCTION INC

BIG SAND DRILLING COMPANY

BIG STAR OIL & GAS, LLC

BILL BARRETT CORP

BI-PETRO, INC.

BIRCH OPERATIONS

BKEP SUPPLY & MARKETING LLC

BK EXPLORATION CORPORATION

BKV BARNETT

BLACK ARROW OPERATING LLC

BLACKBEARD OPERATING LLC

BLACK BEAR OIL CORPORATION

BLACKBRUSH OIL AND GAS INC

BLACK MESA PRODUCTION, LLC

BLACKROCK MIDSTREAM LLC

BLACK STONE ENERGY COMPANY LLC

BLACK SWAN OPERATING

BLACK WARRIOR METHANE CORP

BLACKWELL EXPLORATION & DEVELOPMENT, LLC

BLACKWELL OPERATING LLC

BLAKE HAMMAN OIL PRODUCER

BLAKE PRODUCTION COMPANY INC

BLUCO PRODUCTION COMPANY

BLUE DOLPHIN PRODUCTION

BLUE DOME OPERATING

BLUEFIN RESOURCES, LLC

BLUE MARBLE RESOURCES OPERATING LLC

BLUEMARK ENERGY, LLC

BLUE STAR ENERGY LLC

BLUESTONE NATURAL RESRC LLC

BLUE WATER RESOURCES LLC

BML MARKETING

BNK PETROLEUM (US) INC.

BOAZ ENERGY II LLC

BOAZ ROCKIES OPERATING, LLC

BOGO ENERGY CORPORATION

BONANZA CREEK

BONFIRE ENERGY

BOPCO, L.P.

BORDERLINE OPERATING CORPORATION

BOWLES ENERGY, INC.

BOYD & MCWILLIAMS OPERATING LLC

BP AMERICA

BPX OPERATING COMPANY

BRACKEN OPERATING LLC

BRAKA OPERATING, LLC

BRAMMER ENGINEERING INC

BRAVO ARKOMA, LLC

BRAZOS REVENUE DISTRIBUTION ACCT

BRAZOS VALLEY OPERATING LLC

BRD ROYALTY HOLDINGS, LLC

BRECK OPERATING

BREITBURN ENERGY PARTNERS LP

BRENT BAKER

BRG ENERGY INC

BRG PRODUCTION COMPANY

BRIAR ENERGY CORPORATION

BRIAR OIL & GAS LLC

BRIDGE ENERGY LLC

BRIDWELL OIL COMPANY

BRIGHAM RESOURCES OPERATING, LLC

BRITANCO, LLC

BRIX OPERATING LLC

BROAD OAK ENERGY

BROCO OIL LP

BROOKS PETROLEUM COMPANY INC

BROOKSTON ENERGY INC

BROWER OIL & GAS CO. INC

BROWN & BORELLI, INC.

BROWNING OIL COMPANY INC

B.R. POLK INC

BRUIN E&P OPERATING LLC

BRUIN E&P PARTNERS LLC

BRUIN E & P WILLISTON HOLDINGS, LLC

BSE PRODUCTION COMPANY

BTA OIL PRODUCERS

BUFFCO PRODUCTION, INC.

BURK ROYALTY CO. LTD

BURLESON PETROLEUM, INC.

BURNETT OIL COMPANY

BVD, INC.

B&W OPERATING, LLC

BXP PARTNERS IV LP

BYRD OPERATING COMPANY

C12 ARKANSAS OIL LLC

C6 OPERATING LLC

CABOT OIL & GAS CORPORATION

CAERUS OIL & GAS LLC

CAGO INC

CALDERA OPERATING COMPANY LLC

CALIFORNIA RESOURCES CORP

CALYX ENERGY III, LLC

CAMERON OIL & GAS INC

CAMEX

CAMTERRA RESOURCES PARTNERS

CANAAN RESOURCES, LLC

CANTERA ENERGY LLC

CANYON CREEK ENERGY

CAPITAL STAR OIL & GAS, INC.

CAPITAN ENERGY INC.

CAPSTONE NATURAL RESOURCES II

CARBON CALIFORNIA COMPANY, LLC

CARBON CREEK ENERGY, LLC

CARBON ECONOMY LLC

CA RESOURCES LONG BEACH INC

CARL E GUNGOLL EXPLORATION LLC

CARRIZO O&G

CARR RESOURCES, INC

CASE OIL COMPANY

CASILLAS OPERATING LLC

CASILLAS PETROLEUM CORP

CASILLAS PETROLEUM RESOURCES PARTNERS LLC

CASPER MOUNTAIN ROYALTY LP

CASSIE ENERGY

CASTEX ENERGY, INC.

CASTEX OFFSHORE, INC.

CATAMOUNT ENERGY PARTNERS, LLC

CBP OIL & GAS LLC

CBS ENERGY LLC

CCI EAST TEXAS UPSTREAM LLC

CCI GULF COAST UPSTREAM LLC

C & C OIL & GAS

CC OIL & GAS

CCORE ENERGY MANAGEMENT CO LLC

CCRP OPERATING INC

CD CONSULTING & OPERATING CO.

CENEX

CENTENNIAL RESOURCE PRODUCTION, LLC

CENTRAL CRUDE CORPORATION

CENTRAL LOUISIANA CRUDE PURCHASING, LLC

CENTRAL OPERATING LLC

CENTURY PETROLEUM INC

CHACO ENERGY COMPANY

CHAMPLIN EXPLORATION INC

CHANCEY J. WOFFORD

CHANNA OPERATING LLC

CHAPARRAL ENERGY, INC.

CHAPPARAL OPERATING CO

CHARRO OPERATING L.L.C.

CHARTER OAK PRODUCTION CO, LLC

CHESAPEAKE OPERATING, LLC

CHEVRON NORTH AMERICA

CHEVRON PRODUCTS COMPANY

CHEVRON U.S.A. INC.

CHIEF OIL & GAS

CHISHOLM ENERGY OPERATING, LLC

CHISHOLM OIL AND GAS OPERATING LLC

CHISOS LTD.

CHISOS OPERATING, INC.

CHOCTAW RESOURCES INC

CHOICE EXPLORATION

CHOLLA PETROLEUM, INC.

CHS, INC

CHS MCPHERSON FKA NCRA

CIMA ENERGY LTD

CIMAREX ENERGY CO

CIMARRON ENGINEERING, LLC

CIRRUS PRODUCTION COMPANY

CITATION OIL & GAS CORP

CITIZEN ENERGY III, LLC

CITIZEN ENERGY II LLC

CLARK OIL CO

CLASSIC OPERATING CO LLC

CLAY PETROLEUM

CLAYTON WILLIAMS ENERGY

CLEAR FORK INC

CL&F OPERATING LLC

CLIENT

C & L OIL AND GAS CORPORATION

CML EXPLORATION LLC

CMS ENERGY, INC.

CMX INC

CNX GAS COMPANY, LLC

COASTAL PLAINS ENERGY INC

COBRA OIL & GAS

COFFEYVILLE RESOURCES

COKINOS ENERGY CORPORATION

COLEMAN OIL AND GAS, INC

COLGATE PRODUCTION, LLC

COMANCHE EXPLORATION CO LLC

COMPASS OPERATING, LLC

COMPASS PROD OPERATING

COMPUTERSHARE TCF

COMSTOCK OIL & GAS, LP

CONCHO/COG OPERATING

CONDOR PETROLEUM INC

CONFED OPERATING COMPANY, INC.

CONNER PRODUCTION CO LLC

CONTANGO OPERATORS INC

CONTINENTAL OPERATING CO

CONTINENTAL RESOURCES INC.

CONTINENTAL RESOURCES, LLC

CONTINUUM MIDSTREAM LLC

COPESTONE OPERATING, LLC

CORLENA OIL COMPANY

CORNELIUS PETROLEUM INC

CORNERSTONE NATURAL RESOURCES LLC

CORNERSTONE PETROLEUM OPERATING LLC

CORONADO PETROLEUM CORPORATION

COR OPERATING, LLC

CORTERRA ENERGY OPERATING

CORUM PRODUCTION COMPANY

COSTA ENERGY LLC

COTTON VALLEY OPERATIONS INC

COUNTRYMARK REFINING AND LOGISTICS, LLC

COURSON OIL & GAS, INC.

COVEY PARK ENERGY

COVEY PARK GAS LLC

COVEY PARK RESOURCES LLC

COVINGTON OIL CO INC

COWRIE ENERGY LLC

COX OPERATING, LLC

CP ENERGY, LLC

CRAIG ELDER OIL AND GAS, LLC

CRAWFORD HUGHES OPERATING COMPANY

CRAWLEY PETROLEUM

CRD OPERATING, LLC

CRESCENT PASS ENERGY, LLC

CRESCENT POINT ENERGY U.S. CORP

CREST ENGINEERING SERVICES, INC.

CRESTONE PEAK RESOURCES

CREST OPERATING COMPANY

CREST RESOURCES, INC.

CRIMSON EXPLORATION OPER INC

CRIMSON RESOURCE MANAGEMENT CORP

CROFT PETROLEUM

CROSBYS CREEK OIL & GAS LLC

CROSS OCEAN ENERGY RESOURCE TRUST

CROSS OIL REFINING & MARKETING

CROSS TIMBERS ENERGY LLC

CROWHEART ENERGY LLC

CROWNQUEST OPERATING, LLC

CSODA OPERATING COMPANY LLC

CUB CREEK ENERGY, LLC

CULVER & CAIN PRODUCTION LLC

CUMBERLAND OPERATING LLC

CUMMINGS OIL COMPANY

CUSTER & WRIGHT OPERATING INC

C.W. RESOURCES, INC.

CW RESOURCES, INC.

CYNOSURE ENERGY

CYPRESS OPERATING INC

DAKOTA RESOURCES INC

DALLAS PRODUCTION INC

DAMRON ENERGY, LLC

DAN A HUGHES COMPANY

DANMARK JACKS CREEK LP

DAVID E MORGAN INC

DAVID H ARRINGTON OIL & GAS

DAVIS GAS PROCESSING, INC

DAVIS PETROLEUM CORP

DAVIS SOUTHERN OPERATING CO LLC

DAYLIGHT PETROLEUM LLC

DCOR, LLC

DCP MIDSTREAM, LP

DDJ ROYALTIES LLC

DE3 OPERATING - DOUBLE EAGLE

DELFIN OPERATING LLC

DELRAY OIL INC

DELTA OIL COMPANY

DENBURY RESOURCES

DE OPERATING LLC

DERBY EXPLORATION, LLC

DESERT PRODUCTION INC

DE SOTO OIL PROPERTIES, LLC

DEWBRE PETROLEUM CORPORATION

DEWEY ENERGY HOLDINGS, LLC

DFG ENERGY COMPANY, L.L.C.

D & H PRODUCTION, INC.

DIAMONDBACK E&P LLC

DIAMONDBACK RESOURCES, LLC

DIAMOND S ENERGY COMPANY

DINERO OPERATING COMPANY

DISCOVERY NATURAL RESOURCES, LLC

DISCOVERY OPERATING INC

DIVERSIFIED OIL AND GAS

DIVERSIFIED RESOURCES INC

DJH OIL & GAS LLC

D & J OIL COMPANY INC

DJR OPERATING LLC

DJ SIMMONS, INC.

DLKB OPERATING, LLC

DNR OIL & GAS INC

DOLPHIN PETROLEUM LP

DORADO E&P PARTNERS LLC

DORADO OIL COMPANY

DORCHESTER RESOURCES

DORFMAN PRODUCTION COMPANY

DOUBLE PLAY OIL & GAS INC

DOWNS OPERATING COMPANY, LLC

DRACO ENERGY INC

D.R.G. ROYALTY ACCOUNT

DRIFTWOOD OIL, LLC

DRP GRACE #35 JV

DRP GRACE #36, 38, 40, 42 JV

DRP GRACE #37 JV

DRP GRACE #39 JV

DRP GRACE #41 JV

DUGAN PRODUCTION CORP

DUNCAN OIL PROPERTIES

DURANGO PRODUCTION CORP.

DYNAMIC DEVELOPMENT INC

DYNAMIC PRODUCTION, INC.

EAGLE ENERGY DEVELOPMENT CO.

EAGLE EXPLORATION PRODUCTION, LLC

EAGLE OIL & GAS CO.

EAGLERIDGE OPERATING LLC

EAGLE ROAD OIL LLC

EAP HOLDINGS LLC

EARTHSTONE OPERATING, LLC

EASTEX CRUDE

EASTLAND OIL COMPANY

EASTLAND OPERATING, L.L.C.

EAST TEXAS EXPLORATION LLC

E & B NATURAL RESOURCES MGMT CORP

ECHO E&P, LLC

ECLIPSE RESOURCES I, LP

EDF TRADING RESOURCES

EDINGER ENGINEERING INCORPORATED

EDISON OPERATING COMPANY LLC

EDMAR COMPANY, LLC.

EEC, INC

E.G.L RESOURCES, INC.

EIGHTYEIGHT OIL

ELAND ENERGY INC.

ELK MEADOWS PRODUCTION LLC

ELK OPERATING SERVICES LLC

ELLIOTT OIL & GAS OPERATING COMPANY

EL RAN, INC.

ELSTER OIL & GAS LLC

ELYSIUM JENNINGS LLC

EMEP OPERATING, LLC

EMERALD OIL, INC.

EMERALD OPERATING

EMPIRE NORTH DAKOTA LLC

EMPRESA ENERGY IV, LLC

ENCANA

ENCINA RESOURCES LLC

ENCINO ENERGY

ENCO EXPLORATION COMPANY

ENCORE PERMIAN HOLDINGS LP

ENCRESCENT RESOURCES, LLC

ENDEAVOR NATURAL GAS LP

ENDEAVOR OIL LLC

ENDURING RESOURCES

ENDURO OPERATING LLC

ENERFIN RESOURCES

ENERGEN

ENERGY & EXPLORATION PARTNERS OP

ENERGY PRODUCTION CORP.

ENERGYPRO INC

ENERGYQUEST

ENERGY TRANSFER COMPANY

ENERGY TRANSFER CRUDE MARKETING LLC

ENERGY TRANSFER PARTNERS

ENERPLUS USA

ENERQUEST OIL & GAS LLC

ENERVEST OPERATING LLC

ENERWEST TRADING CO., L.C.

ENGAS MANAGEMENT COMPANY LLC

ENHANCED ENERGY PARTNERS CORP

ENLINK CRUDE PURCHASING, LLC

ENLINK MIDSTREAM

ENPOWER RESOURCES INC

ENSIGN OPERATING LLC

ENSTOR OPERATING COMPANY, LLC

ENTERPRISE CRUDE OIL, LLC

EOG RESOURCES

EP ENERGY E&P COMPANY, L.P.

EPIC ENERGY, LLC

EPIC PERMIAN OPERATING

EPSILON ENERGY USA INC

EQT

EQUAL ENERGY US INC

EQUINOR ENERGY LP

EREBOR RESOURCES, LLC

ERGON OIL PURCHASING, INC.

ESCO OIL OPERATING COMPANY LLC

ESTANCIA OIL & GAS, LLC

ETC FIELD SERVICES

ETC TEXAS PIPELINE, LTD.

ETOCO, L.P.

ETTCO ENTERPRISES

ETX ENERGY, LLC

EVERGREEN NATURAL RESOURCES

EXCALIBUR RESOURCES LLC

EXCEL PRODUCTION COMPANY

EXCO OPERATNG COMPANY, LP

EXCO RESOURCES, INC.

EXL PETROLEUM OPERATING INC

EXPONENT ENERGY 1 LLC

EXTEX - CHEVRONTEXACO GLOBAL TRADING

EXTRACTION OIL & GAS

EXXON MOBIL OIL CORPORATION

FAIRFIELD OIL & GAS CORP.

FAIR OIL

FAIRWAY RESOURCES III LLC

FAIRWAY RESOURCES PARTNERS LP

FALCON V LLC

FARRELL-COOPER MINING COMPANY

FARRINGTON ENERGY LTD

FAR WEST DEVELOPMENT, LLC

FASKEN OIL & RANCH

FDL OPERATING, LLC

FEAGAN GATHERING COMPANY

FELDERHOFF PRODUCTION COMPANY

FELIX ENERGY HOLDINGS II, LLC

FENWAY ENERGY DEVELOPMENT CO.

F. HOWARD WALSH, JR. AGENCY, LTD.

FH PETROLEUM

FIDELITY EXPLORATION

FIELD PETROLEUM CORP

FIELDWOOD ENERGY LLC

FIFTH CREEK ENERGY OPERATING COMPANY, LLC

FINLEY RESOURCES

FIREBIRD ENERGY LLC

FIRST RIVER ENERGY, LLC

FIVE-J.A.B. INC

FLEISCHAKER MINERAL CO

FLETCHER PETROLEUM CORP.

FLINT HILLS RESOURCES, LP

FLYING W RESOURCES, LLC

FLYWHEEL ENERGY PROD (FKA SEECO)

FORESTAR PETROLEUM CORP

FOREST OIL CORPORATION

FORGE ENERGY, LLC

FORT APACHE ENERGY, INC.

FORTAY, INC.

FORTUNE RESOURCES, LLC

FOSSIL OPERATING INC

FOUNDATION ENERGY MANAGEMENT, LLC

FOUNDATION OIL CO. INC

FOUNDERS OIL & GAS OPERATING LLC

FOUR C OIL AND GAS CORPORATION

FOUR CORNERS PETROLEUM LLC

FOUR POINT ENERGY

FOUR SEVENS OPERATING CO., LTD

FOX OPERATING COMPANY

FREEMAN EXPLORATION & PRODUCTION COMPANY INC

FREEPORT MCMORAN

FRISCO PETROLEUM MANAGEMENT LLC

FROSTWOOD ENERGY

FULFER OIL AND CATTLE LLC

FUSE ENERGY LLC

FUTURE ACQUISITION COMPANY, LLC

FX DRILLING COMPANY, INC

GADECO, LLC

GAEA SERVICES, INC.

GASPER RICE RESOURCES, LTD.

GASTAR EXPLORATION INC

GDA INVESTMENTS, INC.

GENE POWELL INVESTMENTS INC

GENESIS CRUDE OIL LP

GENESIS OIL

GEORGE R BROWN PARTNERSHIP, LP

GEOSOUTHERN ENERGY CORPORATION

GEP HAYNESVILLE, LLC

GHA BARNETT, LLC

G H RANCH, INC.

GIANT INDUSTRIES

GIBSON ENERGY MARKETING LLC

GILLILAND OIL & GAS INC

GLADIATOR OPERATING, LLC

GLASSELL PRODUCING CO INC

GLENDALE HOLDINGS

GLH INVESTMENTS INC

GLM ENERGY, INC.

GLOBAL OIL & GAS FIELDS OKLAHOMA LLC

GOLDCO OPERATING, LLC.

GOLDSTON OIL CORPORATION

GONZENBACH OIL & GAS, LLC.

GOODRICH PETROLEUM COMPANY, LLC

GOSNEY & SONS INC

GRAND RESOURCES, INC

GRAYHORSE OPERATING INC

GRAYSON MILL ENERGY, LLC

GREAT WESTERN DRILLING CO.

GREAT WESTERN OPERATING CO.

GRECO OPERATING, INC.

GRENADIER ENERGY PARTNERS II, LLC

GRIT OIL & GAS LLC

GRIZZLY OPERATING

GTG OPERATING, LLC

GUIDON ENERGY MGMT SERVICES LLC

GULF EXPLORATION LLC

GULFMARK ENERGY

GULF PINE ENERGY OPERATING, LLC

HALCON RESOURCES

HALLMARK OIL & GAS CO., INC.

HALVEY ENERGY LLC

HANNAH OIL & GAS

HANNA OIL AND GAS COMPANY

HANNATHON PETROLEUM LLC

HANSON OPERATING COMPANY, INC.

HARLETON OIL

HARRISON INTERESTS, LTD.

HARRISON OIL AND GAS INC

HAT CREEK ENERGY LLC

HAWKWOOD ENERGY OPERATING LLC

HAWTHORN ENERGY PARTNERS LLC

HEADINGTON ENERGY PARTNERS LLC

HEADINGTON OIL COMPANY

HELIS

HENDERSON & ERICKSON INC

HENRY PRODUCTION COMPANY INC

HERITAGE EXPLORATION LLC

HERMAN L. LOEB, LLC

HESS BAKKEN INVESTMENTS II

HESS CORPORATION

HEXAGON OIL & GAS

HG ENERGY LLC

HIBBARD ENERGY, LP

HIBERNIA RESOURCES III, LLC

HIGHLANDER OIL & GAS

HIGHMARK ENERGY OPERATING, LLC

HIGH MESA HOLDINGS LP

HIGHMOUNT EXPLORATION & PRODUCTION

HIGHPOINT OPERATING CORP

HILCORP

HILCORP SAN JUAN, LP

HILLTOP ASSET, LLC

HINE OPERATING COMPANY

HINKLE OIL AND GAS, INC.

H.L. BROWN OPERATING, L.L.C.

H&L EXPLORATION COMPANY, LLC

HODGDEN OPERATING COMPANY INC

HOGBACK EXPLORATION INC

HOG PARTNERSHIP LP

HOLLEY OIL COMPANY LLC

HOLLO OPERATING COMPANY

HOLLYFRONTIER REFINING & MARKETING LLC

HOPEWELL OPERATING INC.

H R B OPERATING COMPANY, INC.

HRF EXPLORATION

HUDSON GROUP LLC

HUDSON OIL COMPANY OF TEXAS

HUGHES EASTERN CORPORATION

HUGOTON OPERATING COMPANY, INC.

HUGUS INVESTMENT CORPORATION

HUNT CIMARRON, LP

HUNT CRUDE OIL SUPPLY COMPANY

HUNTINGTON ENERGY, LLC

HUNT OIL COMPANY

HURD ENTERPRISES LTD

HYDROCARBON OPERATING, INC.

HYPERION OIL & GAS LLC

IBM CORPORATION C/O MARATHON OIL COMPANY

ICA ENERGY OPERATING LLC

ICE BROTHERS, INC.

IMPACT EXPLORATION AND PRODUCTION

IMPERIAL GAS RESOURCES LLC

IMPETRO OPERATING LLC

INCLINE ENERGY, INC.

INDEPENDENCE OIL & GAS, LLC

INDEPENDENCE RESOURCES MANAGEMENT LLC

INDIGO MINERALS LLC

INFINITY HYDROCARBONS LLC

INTERSTATE EXPLORATION LLC

IPM CORP

IPR ENERGY PARTNERS LLC

IRA RESOURCES, INC.

IRON OIL

IRON OIL OPERATING LLC

IRON STAR ENERGY, LLC

ISKANDIA ENERGY OPERATING INC

JABSCO OIL OPERATING, LLC

JACK L PHILLIPS CO.

JACO, INC

JAGGED PEAK ENERGY LLC

JAMESTOWN RESOURCES LLC

JAMEX INC

JANUARY INVESTMENTS LLC

JAY-BEE PRODUCTION

JAY MANAGEMENT COMPANY, LLC

JAYNE WRIGHTSMAN COMPANY

J.B. DRILLING CO, INC.

J B PRODUCTION COMPANY

J-BREX COMPANY

J. CLEO THOMPSON

JEC OPERATING LLC

JEEMS BAYOU PRODUCTION CORP

JEFFCOAT PRODUCTION COMPANY INC

JEFF DOOLEY OPERATING LLC

JERRY SANNER FAMILY LP

JETTA OPERATING COMPANY

JETTA PERMIAN LP

JETTISON INC

JGC EXPLORATION EAGLE FORD LLC

JILPETCO, INC.

JKLM ENERGY LLC

JMA ENERGY

JM COX RESOURCES, L.P.

JO-ALLYN OIL CO., INC

J-O'B OPERATING COMPANY

JOHN H HENDRIX CORP

JOHNNY MCDONALD OR CHARLENE

JOHN PURSLEY ESTATE

JOHN R. PARISH

JOHNSON DISTRIBUTION ACCOUNT

JOLEN OPERATING COMPANY

JONES ENERGY LTD

JOY RESOURCES INC.

JP ENERGY MARKETING LLC

JP OIL HOLDINGS LLC

J.R. CONE OPERATING

J.R. OIL LTD CO

J.R. POUNDS, INC.

JUPITER MARKETING & TRADING, LLC

JUSTISS OIL COMPANY

J-W OPERATING

KAISER FRANCIS

KALER ENERGY CORP.

KALOS CORPORATION

KARPER OIL & GAS CORPORATION

K-B OIL COMPANY

KD ENERGY, LLC

KEATING ENERGY, INC.

KEBO OIL & GAS INC

KEEN RESOURCES, LLC

KEESUN CORP

KELLY MACLASKEY OILFIELD SERVICES, INC

KELTON OPERATING

KENNETH W CORY LTD

KENNETH WISCHKAEMPER

KEY CIMAREX

KEY OIL CO.

KEY PRODUCTION

KGH OPERATING COMPANY

KIBO COMPRESSOR CORP

KILLAM OIL CO., LTD

KIMBELL ROYALTY GROUP LLC

KINDER MORGAN C02 COMPANY, L.P.

KINDER MORGAN PRODUCTION COMPANY LLC

KING ENERGY L.L.C

KINGFISHER RESOURCES INC

KINGWOOD EXPLORATION LLC

KIRKPATRICK OIL COMPANY, INC

KIRKPATRICK OIL & GAS

KISMET PROPERTIES, INC.

KJE OIL & GAS LLC

KLO LLC

KMG OIL AND GAS ONSHORE LP

KOCH EXPLORATION CO LLC

KODA OPERATING

KODIAK PETROLEUM INC

KORNYE-TILLMAN COMPANY

KOVAR OPERATING LLC

K.P. KAUFFMAN COMPANY, INC.

KRAKEN OIL & GAS III, LLC

KRAKEN OIL & GAS II, LLC

KRAKEN OIL & GAS, LLC

KRAMER OPERATING, LLC

KRP BAKKEN I LLC

KWR VENTURES, LLC

LA GLORIA ROYALTY LTD

LAGUNA PETROLEUM

LAMBDA ENERGY RESOURCES LLC

LAMBERT COMPANY LLC

LANCE RUFFEL OIL & GAS LLC

LARCHMONT RESOURCES LLC

LAREDO PETROLEUM INC

LARIO OIL & GAS COMPANY

LATIGO OIL & GAS INC

LAUREL FUEL COMPANY

LAVANCO ENERGY LTD

LAYLINE NORTH TEXAS LLC

LCB RESOURCES LLC

L D DRILLING

LEGACY RESERVES OPERATING LP.

L.E. JONES OPERATING, INC.

LEWIS OPERATING COMPANY

LEWIS PETRO PROPERTIES INC

LIBERTY RESOURCES MANAGEMENT COMPANY, LLC.

LIGHTHOUSE OIL & GAS LP

LIME ROCK RESOURCES A LP

LINCOLN CRUDE OIL MARKETING, LLC

LINDENMUTH AND ASSOCIATES INC.

LINDOW OIL & GAS

LION OIL TRADING & TRANSPORTATION, LLC

L&M OPERATING INC

LOBO OPERATING, INC.

LOGAS ENERGY, LLC

LOGOS OPERATING, LLC

LONDON PETROLEUM CORPORATION

LONESTAR OPERATING LLC

LONE TREE OIL & GAS LLC

LONEWOLF OPERATING, LLC

LONGFELLOW ENERGY, LP

LONG OPERATING LLC

LOWRANCE INC.

LPR ENERGY, LLC

LRG ENERGY LLC

LUBBOCK GAS GATHERING

LUFF EXPLORATION COMPANY

LU-RAY PETROLEUM LLC

LUXE ENERGY

LYNX OPERATING CO., INC.

LYONS & LYONS INC

MAC 5 OPERATING, LLC

MACH RESOURCES LLC

MACK ENERGY CO.

MADILL GAS PROCESSING CO, LLC

MAGIC INVESTMENTS LLC

MAGNOLIA OIL & GAS CORPORATION

MAGNUM ENERGY, INC.

MAGNUM HUNTER RESOURCES

MAGNUM PRODUCING, LP

MAGUIRE OIL COMPANY

MAKAR PRODUCTION COMPANY

MANTI TARKA PERMIAN OPERATING, LLC

MANZANO, LLC

MAPLE ENERGY HOLDINGS

MAP PRODUCTION COMPANY INC

MARATHON OIL COMPANY MAIN

MARBET LLC

MARJO OPERATING CO INC

MARK SHIDLER INC

MARLIN OIL CORPORATION

MAR OIL & GAS CORPORATION

MARQUEE CORPORATION

MARQUIS RESOURCES, LLC

MARTIN CRUDE MARKETING CO.

MARTIN PRODUCING, LLC

MARWELL PETROLEUM LTD PARTNERSHIP

MARY CHRISTINE CLARK

MAS OPERATING COMPANY

MASSIF OIL

MATADOR RESOURCES NM FKA HARVEY YATES

MAVERICK NATURAL RESOURCES

MAXIMUS OPERATING

MAYJAC 1 LLC

MBI OIL & GAS LLC

MCBEE OPERATING CO., L.L.C.

MCCLURE OIL COMPANY INC

MCELVAIN ENERGY INC

MCGOLDRICK OIL COMPANY

MCGOWAN WORKING PARTNERS, INC.

MCRAE & HENRY

MCR LLC

MD AMERICA ENERGY LLC

MDC REEVES ENERGY LLC

MEADE ENERGY CORPORATION

MEADOWBROOK OIL CORPORATION

MECO IV, LLC

MEMORIAL PROD OPERATING/MRD OP

M.E. OPERATING & SERVICES, INC.

MERCURY RESOURCES, LLC

MEREDITH MARKETING

MERIT ENERGY

MERRION OIL AND GAS

MESA GULF COAST LLC

ME-TEX OIL & GAS, INC.

MEWBOURNE OIL COMP

MEXCO ENERGY CORPORATION

MGH MARKETING CO

MICHAELSON PRODUCING COMPANY

MID-CON ENERGY OPERATING, LLC

MIDCON GATHERING

MID-CONTINENT ENERGY OPERATING

MIDDLE FORK ENERGY UINTA LLC

MIDDLETON OIL COMPANY

MIDSTATES PETROLEUM

MIDWESTERN EXPLORATION

MIKOL OIL, LLC

MILESTONE OPERATING INC

MINERAL TECHNOLOGIES

MIRANDA ENERGY CORPORATION

MISSION CREEK RESOURCES

MISSISSIPPI RESOURCES LLC

MISSOURI RIVER LP

MISSOURI RIVER RESOURCES

MISSOURI RIVER ROYALTY

MITSUI E&P USA LLC

M & K OIL COMPANY

M M ENERGY, INC.

MM&M RESOURCES, INC.

MOHICAN OPERATING L.L.C.

MOMENTUM OPERATING CO, INC

MONCRIEF ROYALTY ACCOUNT

MONTANA LAND & EXPLORATION INC.

MOON-HINES-TIGRETT OPERATING

MOREXCO, INC.

MORRIS R. GREENHAW OIL & GAS, INC

MOSBACHER ENERGY COMPANY

MOSS CREEK RESOURCES (SURGE)

MOUNTAINEER STATE ENERGY

MOUNTAIN VIEW ENERGY INC

MOUNTAIN V LLC

MRC DELAWARE

MRC ENERGY COMPANY AKA MATADOR RESOURCES

MRD OPERATING LLC

MSD OPERATING LLC

MULL DRILLING COMPANY INC

MULLOY OPERATING INC

MUREX PETRO CORPORATION

MURFIN DRILLING COMPANY, INC.

MURPHY OIL

MUSKEGON DEVELOPMENT COMPANY

MUSTANG ENERGY RESOURCES LLC.

MUSTANG FUEL CORPORATION

MUSTANG GAS PRODUCTS, LLC

MVP GAS SERVICES, LLC

MWS PRODUCING, INC. DBA

NADEL & GUSSMAN

NADEL & GUSSMAN RUSTON

NATIONAL COOP REFINERY ASSOCIATION

NATIONAL FUEL CORPORATION

NATURAL GAS ANADARKO COMPANY

NAUTILUS POPLAR LLC

NEARBURG PRODUCING COMPANY

NELSON ENERGY, INC.

NEUMIN PRODUCTION COMPANY

NEW CENTURY EXPLORATION INC

NEW DOMINION LLC

NEWFIELD EXPLORATION

NEWFIELD MID-CONTINENT

NEWFIELD ROCKY MOUNTAIN

NEW HORIZON RESOURCES LLC

NGL CRUDE LOGISTICS LLC

NINE POINT ENERGY, LLC

NOBLE ENERGY INC.

NOG PRODUCTION & OPERATING LLC

NONSUCH NATURAL GAS INC

NORTHERN OIL PRODUCTION, INC.

NORTH FINN, LLC

NORTH PLAINS ENERGY II, LLC

NORTHSTAR OPERATING COMPANY

NORTHWESTERN ENERGY

NORTHWOODS OPERATING LLC

NP RESOURCES

OAKRIDGE OIL AND GAS LP

OASIS PETROLEUM

OASIS PETROLEUM NORTH AMERICA LLC

OASIS TRANSPORTATION

O'BRIEN ENERGY RESOURCES CORP.

OCCIDENTAL ENERGY MARKETING

OCCIDENTAL WEST TEXAS OVERTHRUST

OEX-1 LLC

O.H.B., INC

OIL MANAGEMENT CORPORATION

OILWELL OPERATORS, INC

OKLAND OIL COMPANY

OLSEN ENERGY, INC

OMIMEX RESOURCES, INC.

O'NEAL OIL & GAS CO

ONE CYPRESS MARKETING, LLC

O'NEILL PROPERTIES, LTD

ONEOK FIELD SERVICES

OSAGE PARTNERS LLC

OSBORN HEIRS ROYALTY ACCOUNT

OVERTON ENERGY INVESTMENTS

OVERTON PARK OIL & GAS LP

OWN RESOURCES OPERATING, LLC

OXLEY ENERGY LLC

OXXN LLC

OXY - LAGUNA PETROLEUM

OXY - OCCIDENTAL PERMIAN, LT

OXY USA WTP LP

OZARK EXPLORATION INC.

PABLO ENERGY II, LLC

PACER ENERGY, LLC

PACIFIC COAST ENERGY COMPANY LP

PALADIN PETROLEUM III LLC

PALMER OIL, INC

PALMER PETROLEUM, INC

PALOMA PARTNERS IV LLC

PANTERA ENERGY COMPANY

PARALLEL PETROLEUM LLC

PAR DEVELOPMENT CORP

PARDUS OIL & GAS OPERATING, LP

PAR MINERALS CORPORATION

PARSLEY ENERGY OPERATIONS LLC

PARTEN OPERATING INC

PATRIOT RESOURCES INC.

PAYNE EXPLORATION COMPANY

PDC PERMIAN, INC.

PEAK POWDER RIVER RESOURCES LLC

PEARL PRODUCTIONS, INC

PECOS OPERATING COMPANY, LLC

PEDERNALES PETROLEUM OPERATING, LLC

PENNSYLVANIA GENERAL ENERGY CO., L.L.C.

PENNTEX RESOURCES ILLINOIS INC.

PENN VIRGINIA OIL & GAS CORPORATION

PENN VIRGINIA OIL & GAS LP

PENROC OIL CORPORATION

PERCUSSION PETROLEUM OPERATING, LLC

PERDURE PETROLEUM

PEREGRINE PETROLEUM

PERKINS ENERGY CO

PERMIAN CRUDE TRANSPORT

PERMIAN DEEP ROCK

PETCO LIMITED

PETCO REVENUE DIST

PETEX

PETROBAL OMEGA 1, LLC

PETRO-CHEM OPERATING COMPANY

PETRO COMPANY

PETRODOME OPERATING LLC

PETRO HARVESTER OPERATING

PETRO-HUNT LLC

PETRO LEGACY ENERGY II LLC

PETROQUEST ENERGY LLC

PETROSHALE (US) INC.

PETROTX OPERATING LLC

PETRO WARRIOR OPERATING

PETROX RESOURCES INC

PG-M INTERNATIONAL - MATRA OPERATING

PGP HOLDINGS 1 LLC

PGP OPERATING LLC

PHILLIPS 66

PHOENIX HYDROCARBONS OPERATING CORP

PHOENIX PETROCORP INC

PHOENIX PRODUCTION COMPANY.

PINE HAVEN RESOURCES, LLC

PINNACLE OPERATING COMPANY, INC.

PINTAIL OIL & GAS LLC

PINTAIL PRODUCTION COMPANY, INC

PIONEER NATURAL RESOURCES

PITTS ENERGY CO.

PLACID OPERATING LLC

PLAINS MARKETING

PLAINSMEN ENERGY, LLC

PLATFORM OPERATING LLC

PNG OPERATING COMPANY

POC-I LLC

POGO OIL & GAS OPERATING INC

P O & G OPERATING LLC

POINT ENERGY PARTNERS OPERATING, LLC

POLLOCK ENERGY LLC

POUNDS J R

POWERDRIVE ENERGY SERVICES LLC

PPC OPERATING COMPANY, LLC

PRAIRIE GAS COMPANY OF OKLAHOMA (PGCO)

PREMIER NATURAL RESOURCES

PRESIDIO PETROLEUM LLC

PRESIDO

PRIDE ENERGY COMPANY

PRIME OPERATING COMPANY

PRIMEXX ENERGY PARTNERS

PRINCESS THREE OPERATING, LLC

PRI OPERATING LLC

PRODUCTION GATHERING

PRODUCTION OPERATORS OF TEXAS LLC

PROFESSIONAL OIL & GAS MARKETING LLC

PROLINE ENERGY RESOURCES, INC

PRUET PRODUCTION CO

PRUITT OPERATING CO., LLC

PT PETROLEUM LLC

PURSLEY GAS COMPANY

PURVIS OPERATING COMPANY

PXP PLAINS EXPLORATION

QEP ENERGY COMPANY

QUAIL CREEK OIL CORPORATION

QUANAH EXPLORATION, LLC

QUANAH PANHANDLE, LLC

QUANTUM RESOURCES MANAGEMENT, LLC

QUESTA ENERGY CORP

QUICKSILVER

QUINEX ENERGY CORP.

RA-JAC, LLC

RALE OIL INC DBA BAR L PRODUCERS

RAM ENERGY LLC

R.A. MILLER ENERGY

R & A MOORE, INC

RAMPART ENERGY

RAMSEY NICHOLS OPERATING CO., LLC

RANCK OIL COMPANY, INC.

RANGE

RANGER 40 PETROLEUM, LLC

RANGER OIL CORPORATION

RANKEN ENERGY CORPORATION

RAPTOR RESOURCES, INC.

RATTLESNAKE MOUNTAIN OIL LLC

RAYDEN

RAY MAC ENERGY, LTD

RDI ROYALTY DISTRIBUTORS INC

READ & STEVENS INC

REBELLION ENERGY

RED BLUFF RESOURCES OPER LLC

REDBUD E & P INC

RED HAWK RESOURCES INC

RED LINE COMPANY, LTD.

RED MOUNTAIN OPERATING LLC

RED ROCKS OIL & GAS OPERATING LLC

RED WILLOW (BP PROPERTIES)

RED WILLOW PRODUCTION CO

R.E. GAS DEVELOPMENT, LLC

REINECKE PARTNERS LLC

RELENTLESS PERMIAN OPERATING

RELIANCE ENERGY - MW, LLC

REMORA MANAGEMENT LLC

REMORA OPERATING

REMUDA OPERATING COMPANY

REPSOL OIL & GAS USA, LLC

RESACA RESOURCES LLC

RESOLUTE NATURAL RESOURCES

RESOURCE ENERGY, LLC

RESOURCE OIL & GAS LLC

REVERENCE OPERATING LLC

REX ENERGY, LLC

RG EXPLORATION LLC

RHDK OIL & GAS, LLC

RHINO NON-OP, LLC

RICE DRILLING B. LLC

RICHARDSON OPERATING COMPANY

RICKAWAY ENERGY CORP

RIDGE RUNNER RESOURCES OPERATING, LLC

RILEY PERMIAN OPERATING CO., LLC

RIMFIRE RESOURCES LLC

RIM OPERATING, INC

RIMROCK OIL&GAS WILLISTON LLC

RIMROCK RESOURCE OPERATING, LLC

RINCON PETROLEUM CORPORATION

RING ENERGY INC

RINGWOOD GATHERING

RIO ENERGY INTERNATIONAL INC

RIO GRANDE E&P, LLC

RIO PETROLEUM, INC.

RIVER ROUGE MINERALS

RIVERSIDE ENERGY MICHIGAN, LLC

RIVIERA OPERATING LLC

RKG OPERATIONS

RKI ENERGY RESOURCES

RKI EXPLORATION & PRODUCTION LLC

RKW OPERATING LLC

R LACY SERVICES LTD

R.L. CLAMPITT & ASSOC. LLC

ROAN RESOURCES

ROARING FORK ENERGY OPERATING (RFE)

ROBERTS & HAMMACK INC

ROBERTSON ENERGY

ROBERTSON RESOURCES, INC.

ROCHESTER MINERALS II LP

ROCKCLIFF ENERGY MGMT LLC

ROCKER A OPERATING COMPANY

ROCKY MOUNTAIN CRUDE OIL LLC

ROMINE OIL AND GAS

ROSEHILL OPERATING COMPANY LLC

ROSE ROCK FKA SEMGROUP

ROSETTA RESOURCES OPERATING LP

ROUNDTREE & ASSOCIATES, INC.

ROVER OPERATING LLC

ROWOIL, INC.

ROX EXPLORATION INC

ROYALE ENERGY INC

ROYAL HOLLY ENERGY (RHE) OPERATING

ROYAL PRODUCTION COMPANY INC

RP OPERATING LLC

R & R OIL AND GAS, LLC

RSP PERMIAN, LLC

RTC RESOURCES LLP

RUNNING HORSE PRODUCTION CO LLC

RUSK ENERGY OPERATING LLC

RUSTLER ENERGY, LLC

RUTHERFORD OIL CORPORATION

R.W. TYSON PRODUCING CO INC

S2 ENERGY OPERATING LLC

SABALO OPERATING LLC

SABER OIL & GAS VENTURES LLC

SABINAL ENERGY OPERATING, LLC

SABINE O&G

SABLE PERMIAN RESOURCES LAND LLC

SABRE OPERATING, INC.

SAGA PETROLEUM CORP

SAGE NATURAL RESOURCES, LLC

SAJAC ENERGY COMPANY LLC

SAMSON CONTOUR ENERGY E&P, LLC

SAMSON EXPLORATION, LLC

SAMSON LONE STAR LTD.

SAMSON OIL AND GAS USA INC

SAMSON RESOURCES

SANCHEZ ENERGY

SANCHEZ O&G

SANDEL OPERATING COMPANY

SANDRIDGE ENERGY

SAND SPRINGS OIL & GAS COMPANY

SANGUINE

SAN JUAN RESOURCES, INC.

SARITA ENERGY RESOURCES LTD

SAVOY ENERGY LP

SBOG, LLC

S.B. STREET OPERATING INC.

SCALA ENERGY OPERATING LLC

SCHLACHTER OPERATING CORPORATION

SCISSORTAIL ENERGY LLC

SCOUT ENERGY MANAGEMENT, LLC

SEABOARD OIL CO.

SEBEP LLC

SEECO/SWN

SEELY OIL COMPANY

SEM OPERATING COMPANY LLC

SEP PERMIAN, LLC

SEQUEL ENERGY

SG INTERESTS V, LTD.

SHACKLEFORD OIL CO.

SHELBY OPERATING COMPANY

SHELL AERA

SHELL EXPLORATION & PRODUCTION

SHELL GULF OF MEXICO, INC.

SHELL OFFSHORE INC.

SHELL TRADING (US) COMPANY

SHELL WESTERN E&P

SHENANDOAH RESOURCES LLC ROYALTY

SHERIDAN PRODUCTION COMPANY, LLC

SHOCO PRODUCTION, LP

SHORELINE SOUTHEAST LLC

SIANA OIL & GAS CO LLC

SIEN OPERATING COMPANY, LLC

SIERRA RESOURCES LLC

SILVERBACK OPERATING

SILVERBOW RESOURCES

SILVER CREEK OIL & GAS, LLC

SILVER CREEK PERMIAN OPERATING CO LLC

SILVER HILL ENERGY PARTNERS II, LLC

SILVER OAK OPERATING LLC

SINCLAIR CRUDE COMPANY

SINCLAIR O&G

SINGER OIL CO LLC

SKLAR EXPLORATION CO., L.L.C.

SK NEMAHA LLC

SK PLYMOUTH LLC

S K ROGERS OIL INC.

SKYCAP ENERGY, LLC

SLANT OPERATING LLC

SLAWSON EXPLORATION COMPANY, INC.

SMC OIL & GAS, INC.

SM ENERGY COMPANY

SMITH OIL PROPERTIES, INC.

SMITH OPERATING AND MANAGEMENT CO

SND OPERATING, L.L.C.

SN OPERATING

SNOWMASS ENERGY PARTNERS, LTD

SOGO III LLC

SOG RESOURCES

SOMOCO, INC.

SOMONT OIL

SONERRA RESOURCES CORPORATION

SOUTHERN ENERGY OPERATING LLC

SOUTHERN RESOURCES INC

SOUTHLAND ROYALTY CORP

SOUTHWEST OPERATING INC

SOUTHWEST ROYALTIES, INC.

SPC RESOURCES, LLC

SPELLER OIL CORPORATION

SPESS LEASE OPERATIONS

SPINDLETOP OIL & GAS CO.

SPOONER PETROLEUM COMPANY

SPRING OPERATING COMPANY

SPRING VALLEY OIL & GAS INC

SQUARE MILE ENERGY, L.L.C.

SQUYRES OIL CO

SSC INC.

S & S OPERATING CO. INC

STAGHORN ENERGY, LLC

STALEY OPERATING

STANOLIND PRODUCTION LLC

STATE OF NEW MEXICO

STATEWIDE CRUDE INC

STATOIL OIL & GAS

STEPHENS & JOHNSON OPER. CO.

STEPHENS PRODUCTION

STEVENS ENHANCED RECOVERY PARTNERS LLC

STEVENSON OIL COMPANY, INC.

STEWARD ENERGY II, LLC

STO, LLC

STONEGATE PRODUCTION COMPANY

STONEHOLD ENERGY CORPORATION

STONE OAK OPERATING LLC

STOVALL OPERATING CO

STRAND ENERGY L.C.

STRATA PRODUCTION COMPANY

STRAT LAND EXPLORATION CO

STREAMLINE OIL AND GAS, INC.

STRONGHOLD ENERGY II OPERATING LLC

STRONG ROCK OPERATING COMPANY

STROUD PETROLEUM INC

SUE-ANN OPERATING LC

SUMMIT PETROLEUM INC.

SUNDANCE ENERGY INC

SUNDIAL ENERGY LLC

SUNLAND PRODUCTION COMPANY, INC.

SUNLIGHT EXPLORATION, INC.

SUNOCO REFINING & MARKETING

SUNRAY MARKETING, LLC

SUN REFIN

SUN RESOURCES TEXAS INC

SUPCO GAS FUND

SUPERIOR CRUDE GATHERING INC

SUPERIOR PIPELINE COMPANY, LLC

SUPERIOR PRODUCTION LLC

SUTTON PRODUCING COMPANY

SWEETWATER EXPLORATION, LLC

SWEETWATER PRODUCTION, INC

SWIFT ENERGY

SWN PRODUCTION COMPANY, LLC

SYDRI OPERATING, LLC

SYDSON ENERGY, INC

SYNERGY RESOURCES CORPORATION

TABULA RASA PARTNERS LLC

TAG TEAM RESOURCES, LLC

T.A. HILLIN

TAK PETROLEUM INC

TALLGRASS MIDSTREAM LLC

TAMARACK PETROLEUM COMPANY INC

TANDEM ENERGY CORPORATION

TANOS EXPLORATION LLC

TAP ROCK OPERATING

TAPS II ENERGY LLC

TAQA NORTH

TARE RESOURCES, LLC

TARGA MIDSTREAM SERVICES LLC

TARGA PIPELINE MID-CONTINENT WESTTEX, LLC

TARKA ENERGY, LLC

TAU VENTURES

TDX ENERGY LLC

TEAL NATURAL RESOURCES, LLC

TECOLOTE ENERGY OPERATING, LLC

TEDDY ADKINS PRODUCTION DISBURSEMENT ACCOUNT

TELLURIAN OPERATING LLC

TELLUS OPERATING GROUP LLC

TEMPLAR OPERATING LLC

TENISON OIL COMPANY

TEP ANADARKO BASIN OPER LLC

TEP BARNETT USA LLC

TE-RAY RESOURCES, LLC

TERRA ENERGY COMPANY LLC

TERRITORY RESOURCES LLC

TESORO

TESSERA ENERGY

TEXAKOMA OPERATING LP

TEXAKOTA OIL COMPANY

TEXAS AMERICAN RESOURCES COMPANY

TEXAS ENERGY ENTERPRISES LLC

TEXAS ENERGY SUPPLY, INC

TEXAS OIL PURCHASING LLC

TEXAS PETROLEUM INVESTMENT COMPANY

TEXAS STANDARD OIL OPERATING COMPANY

TEXEGY OPERATING COMPANY LLC

TEXICAN CRUDE & HYDROCARBONS, LLC

TEXLAND PETROLEUM, LP

TEXXOL OPERATING CO. INC

TGT PETROLEUM CORPORATION

THE DAUBE COMPANY

THE JOY PARTNERS, LTD

THE LONG TRUSTS

THE MCDANIEL CO.

THE QUINTIN LITTLE COMPANY

THE REDMON OIL COMPANY INC.

THE TERMO COMPANY

THREE RIVERS OPERATING COMPANY II LLC.

THRONE PETROLEUM RESOURCES LLC

THUNDERBIRD RESOURCES

THUNDER OIL & GAS LLC

TILFORD PINSON EXPLORATION, LLC

TIME ENERGY LLC

TITAN RESOURCES, LIMITED

TITAN ROCK EXPLORATION & PRODUCTION, LLC

TK DRILLING CORP

TMR EXPLORATION

TNM RESOURCES LLC

TOC ENERGY RESOURCES LLC

TOKLAN OIL & GAS CORP

TOP OPERATING CO

TORCH OPERATING, LLC

TORRENT OIL LLC

TOTAL E&P USA INC

TPR

TRACE OPERATING, LLC

TRACKER RESOURCE DEVELOPMENT III, LLC

TRAFIGURA

TRAIL RIDGE ENERGY PARTNERS,

TRANSOIL MARKETING, LLC

TRANSPACIFIC ENERGY

TRAP ROCK OIL LTD

TREADSTONE ENERGY PARTNERS, LLC

TREJIM OPERATORS, LLC

TREK RESOURCES, INC.

TREPCO PRODUCTION COMPANY, INC

TRIAD HUNTER LLC

TRIAD OPERATING CORPORATION

TRIANGLE THREE RESOURCES LLC

TRIANGLE USA PETROLEUM CORPORATION

TRI-C RESOURCES LLC

TRILOGY OPERATING, INC.

TRINITY CO2 SUPPLY LLC

TRINITY EOR LLC

TRINITY GAS CORPORATION

TRINITY OPERATING (USG) LLC

TRINITY RIVER ENERGY

TRIPLE CROWN RESOURCES LLC

TRIPLEDEE OPERATING COMPANY LLC

TRIUMPH ENERGY PARTNERS LLC

TRIVIUM OPERATING, LLC

TR OFFSHORE LLC

TRP OPERATING, LLC

TRUE OIL LLC

TRUE OIL TRUCKING & MARKETING, LLC

TRUTH RESOURCES LP

TUG HILL OPERATING LLC

TWIN EAGLE CRUDE

TWIN MONTANA INC

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ULTRA

UNION GAS OPERATING COMPANY

UNITED ENERGY OPERATING, LLC

UNITED OIL CORPORATION

UNITED PRODUCTION COMPANY, L.L.C.

UNITEX OIL & GAS LLC

UNIT PETROLEUM

UPCURVE ENERGY, LLC

UPHAM OIL & GAS COMPANY, LP

UPLAND RESOURCES LLC

UPP OPERATING, LLC

UPSTREAM ENERGY SERVICES LLC

UPSTREAM EXPLORATION LLC

URBAN O&G

URSA OPERATING COMPANY LLC

U. S. ENERGY DEVELOPMENT CORP

U. S. OPERATING, INC

UTAH GAS OP LTD

VALENCE OPERATING COMPANY

VALERO ENERGY CORPORATION

VALPOINT OPERATING, LLC

VANCO OIL & GAS CORP.

VANGUARD OPERATING

VAN OPERATING, LTD

VANTAGE ENERGY

VANTAGE OPERATING LLC

VEENKER RESOURCES, INC.

VENADO OIL & GAS

VENOCO INC

VENTEX OPERATING CORP.

VENTURE OIL & GAS INC.

VERDAD RESOURCES LLC

VERDUGO-PABLO ENERGY, LLC

VERDUN OIL & GAS LLC

VERMILION ENERGY USA LLC

VERNON E FAULCONER INC

VERSADO GAS PROCESSORS

VESTIGE ENERGY, LLC

VIEJO ENERGY I, LLC

VIKING INTERNATIONAL RESOURCES CO, INC

VIKING RESOURCES LLC

VINE OIL & GAS

VINTAGE PETROLEUM

VIRTEX OPERATING COMPANY INC

VISION OPERATING COMPANY LLC

VITESSE OIL LLC

VITOL

VITRUVIAN EXPLORATION LLC

WAGGONER OIL & GAS CORPORATION

WAGNER & BROWN

WAGNER OIL

WALLBACK PRODUCTION ACCOUNT

WALSH AND WATTS, INC.

WALTON PRODUCING INC

WANDOO ENERGY, LLC

WAPITI OPERATING LLC

WARD PETROLEUM CORP

WARREN AMERICAN OIL COMPANY

WARWICK-BACCHUS LLC

WAYNE WEATHERSBY

WCS OIL AND GAS CORPORATION

WEATHERLY OIL & GAS, LLC

WEATHERS EXPLORATION INC.

WEAVER ENERGY CORPORATION

WEBB ENERGY RESOURCES INC

WENTWORTH OPERATING COMPANY

WESCO OPERATING, INC.

WEST BAY EXPLORATION CO

WESTBROOK OIL CORPORATION

WESTERN CHIEF OPERATING, L.L.C.

WESTERN ENERGY GROUP LLC

WESTERN OIL AND GAS DEVELOPMENT CORP.

WESTERN PRODUCTION COMPANY

WESTERN REFINING SOUTHWEST, INC.

WEST LARGO CORP

WESTMORELAND SAVAGE CORPORATION

WESTSTAR OIL AND GAS

WEXPRO COMPANY

WHEELER OPERATING CORPORATION

WHITE KNIGHT PRODUCTION LLC

WHITE MARLIN OPERATING COMPANY, LLC

WHITE OAK OPERATING CO, LLC

WHITE OPERATING COMPANY

WHITE RIVER PRODUCTION LLC

WHITE ROCK EXPLORATION

WHITE ROCK OIL & GAS

WHITE STAR PETROLEUM II, LLC

WHITE STAR PETROLEUM, LLC

WHITNEY OIL & GAS LLC

WICKLUND PETROLEUM CORPORATION

WILDHORSE RESOURCES MANAGEMENT COMPANY LLC

WILL-DRILL PRODUCTION CO. INC

WILL ENERGY CORPORATION

WILLIAMS OIL COMPANY

WILLIFORD ENERGY COMPANY

WILLIFORD RESOURCES LLC

WILLO OIL & GAS EXPLORATION, LLC

WILSON RESOURCES, INC.

WINDSOR ENERGY

WINDY COVE ENERGY II LLC

WINFIELD OPERATING COMPANY

WINRIGHT RESOURCES OPERATING LLC

WISE PRODUCTION CO

WISHBONE TEXAS OPERATING COMPANY LLC

WOLD ENERGY PARTNERS LLC

WOLF ENERGY, INC

WOODBINE PRODUCTION COMP. INC.

WOOLSEY OPERATING COMPANY, LLC

WPX ENERGY HOLDINGS

WPX ENERGY PERMIAN LLC

WTG BENEDUM JOINT VENTURE

WTG EXPLORATION, INC.

WTG GAS PROCESSING, L.P.

WTG JAMESON LP

WTG SOUTH PERMIAN MIDSTREAM, LLC

W&T OFFSHORE

WYNN CROSBY OPERATING LTD

XCL RESOURCES, LLC

XOG RESOURCES LLC

XOIL, INC.

XPLORE OPERATING, LLC

XRO ENERGY LLC

XTO ENERGY

XTREME ENERGY COMPANY

YALE OIL ASSOCIATION, INC.

YARBROUGH OIL, LP

YATES ENERGY CORPORATION

YATES PETROLEUM

YOUNGER ENERGY COMPANY

YUMA EXPLORATION & PRODUCTION

ZACHRY EXPLORATION, LLC

ZACHRY OIL & GAS

ZARGON OIL INC.

ZARVONA ENERGY LLC

ZAVANNA LLC

ZENERGY INC

ZEPHYR OPERATING CO LLC