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AETHON ENERGY OPERATING LLC
BCE-MACH LLC
BIRCH OPERATIONS
BLACKBEARD OPERATING LLC
BLUE DOME OPERATING
BRG ENERGY INC
BUFFCO PRODUCTION, INC.
C6 OPERATING LLC
CALLON PETROLEUM OPERATING COMPANY
CHESAPEAKE OPERATING, LLC
CHEVRON U.S.A. INC.
CITIZEN ENERGY III, LLC
CIVITAS RESOURCES, INC.
COMSTOCK OIL & GAS, LLC
CONOCOPHILLIPS CO.
CONTINENTAL RESOURCES, LLC
CRAWLEY PETROLEUM
DIVERSIFIED OIL AND GAS
EDISON OPERATING COMPANY LLC
ENDEAVOR ENERGY RESOURCES
EOG RESOURCES
FOUNDATION ENERGY MANAGEMENT, LLC
FUNDARE RESOURCES OPERATING
GULFPORT MIDCON LLC
KAISER FRANCIS
LEGACY RESERVES OPERATING LP.
MARBET LLC
MATADOR PRODUCTION COMPANY
MERIT ENERGY
MUSTANG FUEL CORPORATION
NOBLE ENERGY INC.
OVINTIV USA LLC
OXLEY ENERGY LLC
PIONEER NATURAL RESOURCES
PRESIDIO PETROLEUM LLC
PRESIDO
RED ROCKS OIL & GAS OPERATING LLC
SABINE OIL & GAS CORP
SABRE OPERATING, INC.
SANGUINE
SILVER HILL ENERGY PARTNERS II, LLC
SURGE OPERATING, LLC
TEOCALLI EXPLORATION LLC
TGNR GULF COAST, LLC
TRINITY
TRP OPERATING, LLC
UNBRIDLED RESOURCES LLC
VALENCE OPERATING COMPANY
VITAL ENERGY, INC.
WENTWORTH OPERATING COMPANY
WILDFIRE ENERGY OPERATING, LLC
XTO ENERGY
101 ENERGY CORPORATION
1776 ENERGY PARTNERS LLC
1849 ENERGY PARTNERS LLC
31 GROUP, LLC
31 OPERATING LLC
3-M ENERGY CORPORATION
3-T EXPLORATION INC
8 NORTH, LLC.
AAOC LP
ABACO OPERATING, LLC
ABERCROMBIE ENERGY LLC
ABRAXAS PETROLEUM CORPORATION
ACACIA ENERGY PARTNERS LLC
ACE GATHERING, INC
AC EXPLORATION, LLC
ACOMA OIL CORPORATION ORONO PRODUCTION CO.
ACOMA OPERATING, LLC
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
AGAVE ENERGY, INC
AGL RESOURCES
AGP HOLDINGS OPER COMPANY LLC
AJAX RESOURCES LLC
ALLEGIANT RESOURCES
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
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
ARAPAHOE SPV, 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
ARKOMA OPERATING
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
BATTALION OIL MANAGEMENT, INC.
BAYOU STATE OIL CORPORATION
BAYS EXPLORATION, INC.
BAYSWATER EXPLORATION & PRODUCTION, LLC
BAYSWATER OPERATING COMPANY, LLC.
BAYTEX ENERGY
BAYTIDE PETROLEUM, INC
BBX OPERATING LLC
BCE MACH
BCE MACH II
BCE-MACH III
BC OPERATING, INC.
BEACH EXPLORATION
BE ANADARKO II LLC
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.
BISON IV PROPERTIES COLORADO LLC
BKEP SUPPLY & MARKETING LLC
BK EXPLORATION CORPORATION
BKV BARNETT
BLACK ARROW 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
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
BREITBURN OPERATING LP
BRENT BAKER
BRG PETROLEUM
BRG PRODUCTION COMPANY
BRIAR ENERGY CORPORATION
BRIAR OIL & GAS LLC
BRICKTOWN ENERGY 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
BUCCANEER OPERATING
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
CABOT OIL & GAS CORPORATION
CAERUS OIL & GAS LLC
CAGO INC
CALDERA OPERATING COMPANY LLC
CALIFORNIA RESOURCES CORP
CALVERT
CALYX ENERGY III, LLC
CAMERON OIL & GAS INC
CAMEX
CAMINO NATURAL RESOURCES LLC
CAMTERRA RESOURCES PARTNERS
CANAAN RESOURCES, LLC
CANTERA ENERGY LLC
CANVAS
CANVAS 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
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
CGS OPERATING, LLC
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
CHEVRON NORTH AMERICA
CHEVRON PRODUCTS COMPANY
CHIEF OIL & GAS
CHISHOLM ENERGY OPERATING, LLC
CHISHOLM OIL AND GAS OPERATING LLC
CHISHOLM OIL & 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
CITIZEN ENERGY
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 OPERATING LLC
COLGATE PRODUCTION, LLC
COMANCHE EXPLORATION CO LLC
COMPASS OPERATING, LLC
COMPASS PROD OPERATING
COMPUTERSHARE TCF
COMSTOCK OIL & GAS, LP
CONCHO/COG OPERATING
CONCORD ENERGY LLC
CONDOR PETROLEUM INC
CONFED OPERATING COMPANY, INC.
CONNER PRODUCTION CO LLC
CONTANGO
CONTANGO OPERATORS INC
CONTANGO RESOURCES
CONTANGO RESOURCES, LLC
CONTINENTAL OPERATING CO
CONTINENTAL RESOURCES INC.
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
COTERRA
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
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
CVR SUPPLY & TRADING
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
DAVID KIRK
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
DERBY EXPLORATION, LLC
DESERT PRODUCTION INC
DE SOTO OIL PROPERTIES, LLC
DEVON
DEVON ENERGY PRODUCTION CO LP
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
DIVERSIFIED PRODUCTION, LLC
DIVERSIFIED RESOURCES INC
DJH OIL & GAS LLC
D & J OIL COMPANY INC
DJR OPERATING LLC
DJ SIMMONS, INC.
DLKB OPERATING, LLC
D-MIL PRODUCTION INC
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
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
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
EDMAR COMPANY, LLC.
EEC, INC
E.G.L RESOURCES, INC.
EIGHTYEIGHT OIL
ELAND ENERGY INC.
ELEMENT PETROLEUM OPERATING III LLC
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
ENERPLUS CORP.
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 Y RESOURCES INC
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
FAE II OPERATING LLC
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 OPERATING, LLC
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
FORMENTERA
FORT APACHE ENERGY, INC.
FORTAY, INC.
FORTUNE RESOURCES, LLC
FOSSIL OPERATING INC
FOUNDATION
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
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
HENRY RESOURCES LLC
HERITAGE EXPLORATION LLC
HERMAN L. LOEB, LLC
HESS
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
HIGHPEAK ENERGY HOLDINGS, LLC
HIGHPOINT OPERATING CORP
HILCORP
HILCORP SAN JUAN, LP
HILDEBAUGH BLACK GOLD
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
HUX OIL COMPANY, LLC
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
INFIELD DISCOVERY, 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
KALER ENERGY CORP.
KALKMAN OIL CORPORATION
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
KEITH F. WALKER
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
KRAKEN OPERATING 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
LARGE OPERATING LLC
LARIO OIL & GAS COMPANY
LATIGO OIL & GAS INC
LAUREL FUEL COMPANY
LAVANCO ENERGY LTD
LAYLINE NORTH TEXAS LLC
LCB RESOURCES LLC
L D DRILLING
L.E. JONES OPERATING, INC.
LEWIS OPERATING COMPANY
LEWIS PETRO PROPERTIES INC
LIBERTY RESOURCES MANAGEMENT COMPANY, LLC.
LIGHTHOUSE OIL & GAS LP
LIME ROCK
LIME ROCK RESOURCES A LP
LIME ROCK RESOURCES III-A, L.P.
LIME ROCK RESOURCES OPERATING
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
M2 OIL & GAS CONSULTANTS, LLC
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
MARATHON OIL COMPANY MAIN
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
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
MUSKEGON OPERATING COMPANY LLC
MUSTANG ENERGY RESOURCES LLC.
MUSTANG GAS PRODUCTS, LLC
MVP GAS SERVICES, LLC
MV PURCHASING
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
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
OASIS/CHORD
OASIS PETROLEUM
OASIS PETROLEUM NORTH AMERICA LLC
OASIS PETROLEUM - ROYALTY
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
OKLAHOMA PETROLEUM ALLIES LLC
OKLAND OIL COMPANY
OLIPDP
OLIPDP I, LLC
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
OXXN LLC
OXY - LAGUNA PETROLEUM
OXY - OCCIDENTAL PERMIAN, LT
OXY USA INC.
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 NATURAL GAS LLC
PALOMA OPERATING CO 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
PECOS RIVER EXPLORATION, 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
PERMIAN RESOURCES, LLC
PERMIAN RESOURCES OPERATING LLC
PETCO LIMITED
PETCO REVENUE DIST
PETEX
PETROBAL OMEGA 1, LLC
PETRO-CHEM OPERATING COMPANY
PETRO COMPANY
PETRODOME OPERATING LLC
PETRO HARVESTER OPERATING
PETROHUNT
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.
PILLAR ENERGY
PINE HAVEN RESOURCES, LLC
PINNACLE OPERATING COMPANY, INC.
PINTAIL OIL & GAS LLC
PINTAIL PRODUCTION COMPANY, INC
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
PRIDE ENERGY COMPANY
PRIMA EXPLORATION
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
QUAIL OIL & GAS, LC
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 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
REVOLUTION RESOURCES
REVOLUTION RESOURCES II 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
ROCKIN D LLC
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
SAGA PETROLEUM CORP
SAGE NATURAL RESOURCES, LLC
SAJAC ENERGY COMPANY LLC
SAMHILL 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
SANDRIDGE ENERGY
SANDRIDGE EXPLORATION AND PRODUCTION, LLC
SAND SPRINGS OIL & GAS COMPANY
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
SCOUT EP
SEABOARD OIL CO.
SEBEP LLC
SEECO/SWN
SEELY OIL COMPANY
SEM OPERATING COMPANY LLC
SEP PERMIAN, LLC
SEQUEL ENERGY
SEQUOYAH ENERGY HOLDINGS, LLC
SG INTERESTS V, LTD.
SHACKLEFORD OIL CO.
SHARP IMAGE ENERGY INC.
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 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
SNR OPERATING, LLC
SOGO III LLC
SOG RESOURCES
SOJOURNER DRILLING CORPORATION
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
SPUR ENERGY PARTNERS LLC
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
STRAWN PETROLEUM OPERATING, LLC
STREAMLINE OIL AND GAS, INC.
STRONGHOLD ENERGY II OPERATING LLC
STRONG ROCK OPERATING COMPANY
STROUD PETROLEUM INC
SUE-ANN OPERATING LC
SULPHUR RIVER EXPLORATION INC
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
TALL CITY OPERATIONS III LLC
TALLGRASS MIDSTREAM LLC
TAMARACK PETROLEUM COMPANY INC
TAMWORTH
TANDEM ENERGY CORPORATION
TANOS EXPLORATION LLC
TAP ROCK OPERATING
TAPS II ENERGY LLC
TAPSTONE 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.
THREE SPAN OIL & GAS, INC.
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
TPR MID CONTINENT LLC
TRACE OPERATING, LLC
TRACKER RESOURCE DEVELOPMENT III, LLC
TRAFIGURA
TRAILHEAD
TRAIL RIDGE ENERGY PARTNERS,
TRANSOIL MARKETING, LLC
TRANSPACIFIC ENERGY
TRAP ROCK OIL LTD
TRAVELERS OIL COMPANY
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
TROUBADOUR ENERGY HOLDINGS, LLC
TROY ENERGY 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
VALERO ENERGY CORPORATION
VALERO MKTG. SUPPLY CO.
VALPOINT OPERATING, LLC
VANCO OIL & GAS CORP.
VANGUARD OPERATING
VAN OPERATING, LTD
VANTAGE ENERGY
VANTAGE OPERATING LLC
VECTOR MINERALS CORP.
VEENKER RESOURCES, INC.
VENADO OIL & GAS
VENOCO INC
VENTEX OPERATING CORP.
VENTURE OIL & GAS INC.
VERADO ENERGY INC
VERDAD RESOURCES LLC
VERDUGO-PABLO ENERGY, LLC
VERDUN OIL & GAS LLC
VERMILION ENERGY USA LLC
VERNON E FAULCONER INC
VERSADO GAS PROCESSORS
VESS OIL CORP.
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
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
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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
WHITING OIL AND GAS CORP.
WHITING PETROLEUM CORPORATION
WHITNEY OIL & GAS LLC
WICKLUND PETROLEUM CORPORATION
WILDFIRE ENERGY
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WILL-DRILL PRODUCTION CO. INC
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WILLIAMS OIL COMPANY
WILLIFORD ENERGY COMPANY
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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
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WOODBINE PRODUCTION COMP. INC.
WOOLSEY OPERATING COMPANY, LLC
WPX
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WTG BENEDUM JOINT VENTURE
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WTG GAS PROCESSING, L.P.
WTG JAMESON LP
WTG SOUTH PERMIAN MIDSTREAM, LLC
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W W ENERGY CORP
WYNN CROSBY OPERATING LTD
XCL RESOURCES, LLC
XOG RESOURCES LLC
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XPLORE OPERATING, LLC
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YARBROUGH OIL, LP
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ZACHRY EXPLORATION, LLC
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AETHON ENERGY OPERATING LLC
BCE-MACH LLC
BIRCH OPERATIONS
BLACKBEARD OPERATING LLC
BLUE DOME OPERATING
BRG ENERGY INC
BUFFCO PRODUCTION, INC.
C6 OPERATING LLC
CALLON PETROLEUM OPERATING COMPANY
CHESAPEAKE OPERATING, LLC
CHEVRON U.S.A. INC.
CITIZEN ENERGY III, LLC
CIVITAS RESOURCES, INC.
COMSTOCK OIL & GAS, LLC
CONOCOPHILLIPS CO.
CONTINENTAL RESOURCES, LLC
CRAWLEY PETROLEUM
DIVERSIFIED OIL AND GAS
EDISON OPERATING COMPANY LLC
ENDEAVOR ENERGY RESOURCES
EOG RESOURCES
FOUNDATION ENERGY MANAGEMENT, LLC
FUNDARE RESOURCES OPERATING
GULFPORT MIDCON LLC
KAISER FRANCIS
LEGACY RESERVES OPERATING LP.
MARBET LLC
MATADOR PRODUCTION COMPANY
MERIT ENERGY
MUSTANG FUEL CORPORATION
NOBLE ENERGY INC.
OVINTIV USA LLC
OXLEY ENERGY LLC
PIONEER NATURAL RESOURCES
PRESIDIO PETROLEUM LLC
PRESIDO
RED ROCKS OIL & GAS OPERATING LLC
SABINE OIL & GAS CORP
SABRE OPERATING, INC.
SANGUINE
SILVER HILL ENERGY PARTNERS II, LLC
SURGE OPERATING, LLC
TEOCALLI EXPLORATION LLC
TGNR GULF COAST, LLC
TRINITY
TRP OPERATING, LLC
UNBRIDLED RESOURCES LLC
VALENCE OPERATING COMPANY
VITAL ENERGY, INC.
WENTWORTH OPERATING COMPANY
WILDFIRE ENERGY OPERATING, LLC
XTO ENERGY
101 ENERGY CORPORATION
1776 ENERGY PARTNERS LLC
1849 ENERGY PARTNERS LLC
31 GROUP, LLC
31 OPERATING LLC
3-M ENERGY CORPORATION
3-T EXPLORATION INC
8 NORTH, LLC.
AAOC LP
ABACO OPERATING, LLC
ABERCROMBIE ENERGY LLC
ABRAXAS PETROLEUM CORPORATION
ACACIA ENERGY PARTNERS LLC
ACE GATHERING, INC
AC EXPLORATION, LLC
ACOMA OIL CORPORATION ORONO PRODUCTION CO.
ACOMA OPERATING, LLC
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
AGAVE ENERGY, INC
AGL RESOURCES
AGP HOLDINGS OPER COMPANY LLC
AJAX RESOURCES LLC
ALLEGIANT RESOURCES
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
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
ARAPAHOE SPV, 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
ARKOMA OPERATING
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
BATTALION OIL MANAGEMENT, INC.
BAYOU STATE OIL CORPORATION
BAYS EXPLORATION, INC.