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Niobrara County, WY oil and gas wells

3,091 wells: 299 active, 1,784 plugged, 13 orphaned, run by 542 operators.

Figures from the Wyoming Oil and Gas Conservation Commission, updated 2026-10-19.

Top operators in Niobrara

OperatorActiveWells here
SUNSHINE VALLEY PETROLEUM4595
JP OIL WYOMING LLC3362
FINLEY RESOURCES INC2946
BREITBURN OPERATING L.P.2838
HADLEY/JACKSON ENERGY LLC2428
USA ENERGY LLC1436
BULLOCK A O1429
M & K OIL COMPANY LLC1419
1876 RESOURCES LLC1119
CENTURY OIL AND GAS LLC10574
MILLENNIUM OIL & GAS LLC1036
NEW HORIZON RESOURCES LLC88
CHIPCORE LLC710
JOEMAR WYOMING OPERATING LLC710
ARENA RESOURCES LLC633
KREJCI HARRY L68
MURPHY SHELDON L & LORETTA59
SEEDY DRAW LLC55
REMUDA ENERGY DEVELOPMENT LLC436
ANTELOPE ENERGY COMPANY LLC45
O'BRIEN ENERGY RESOURCES CORPORATION224
ANT HILLS PRODUCTION213
DARRAH JOHN JAY JR213
ELLWOOD EXPLORATION LLC211
PROVIDENCE OIL DEVELOPMENT LLC24

Wells

Not plugged · All wells · Plugged · Orphaned

WellAPI / IDStatusTypeOperator
(no name) 1 49-027-05089Plugged OilMARATHON OIL COMPANY
(no name) 4 49-027-05133Plugged Oil—
(no name) 1 49-027-05177Plugged OilUNION OIL CO OF CALIFORNIA
(no name) 1 49-027-05192Plugged OilLUSK WYOMING OIL
(no name) 1 49-027-05196Plugged OilARGO PETROLEUM CORPORATION
(no name) 1 49-027-05332Plugged OilMARATHON OIL COMPANY
(no name) 2 49-027-05364Plugged OilBUCK CREEK OIL COMPANY
(no name) 1 49-027-05381Plugged OilCONOCO INC
(no name) 3 49-027-05384Plugged OilBUCK CREEK OIL COMPANY
(no name) 1 49-027-05391Plugged OilBOWSER PARK & SATTERFIELD W H
(no name) 2 49-027-05410Plugged OilBUCK CREEK OIL COMPANY
(no name) # 49-027-05415Plugged OilCONOCO INC
(no name) 1 49-027-05491Plugged OilTEXACO EXPLORATION & PROD
(no name) 1 49-027-05505Plugged OilARGO PETROLEUM CORPORATION
(no name) 1 49-027-05560Plugged OilMARATHON OIL COMPANY
(no name) 1 49-027-05639Plugged OilALLEN OIL
(no name) 1 49-027-05745Plugged OilEXPLORATIONS INC
(no name) 46-25 49-027-05830Plugged OilSIGNAL EXPLORATION INC
(no name) 1 49-027-05938Plugged OilHOLLY ENERGY INC
(no name) 1 49-027-05948Plugged OilSTERLING DRILLING
(no name) 1 49-027-05949Plugged OilMARATHON OIL COMPANY
(no name) 3 49-027-05960Plugged OilCHESTER OIL COMPANY
(no name) 1 49-027-05981Plugged OilBRIGGS H E
(no name) 5-A 49-027-20895Plugged OilANT HILLS PRODUCTION
(no name) 2 49-027-60016Plugged OilMARATHON OIL COMPANY
(no name) 1-M 49-027-60021Plugged InjectionCORONADO OIL COMPANY
(no name) 1 49-027-60022Plugged OilMARATHON OIL COMPANY
(no name) 1 49-027-60029Plugged OilWESTRANS PETROLEUM INC
(no name) 1 49-027-60032Plugged OilMARATHON OIL COMPANY
(no name) 1 49-027-60036Plugged OilWESTERN NATURAL GAS INC
20 MILE CREEK FED 2 49-027-26645Plugged Dry holeDAVIS PETROLEUM CORPORATION
22-10 ZERBST FED 22-10 49-027-20619Plugged OilZERBST JAMES E
27-1 MARTIN 27-1 49-027-20893Plugged OilWASHAKIE OIL COMPANY
34-26 FEDERAL 34-26 49-027-20699Plugged OilPOWDER RIVER PETROLEUM
38-63 COGC W-58847 1-30 49-027-20848Plugged OilCOASTAL OIL & GAS CORPORATION
61 GOVT 32-31- 49-027-20647Plugged OilPRENALTA CORPORATION
A A ONG PATENT 1 49-027-05426Plugged OilCONOCO INC
A C NELSON 1 49-027-60001Plugged OilCOW GULCH OIL COMPANY
A JOSS 1 49-027-20232Plugged OilBRAUN C F & CO
A ONG PATENT 1-C 49-027-05585Plugged OilMOBIL EXPL & PRODUCING NORTH AMERICA INC
A ROHLFF 9 49-027-05474Plugged OilJP OIL WYOMING LLC
A ROHLFF 1 49-027-05482Plugged OilJP OIL WYOMING LLC
A ROHLFF 7 49-027-05506Plugged OilJP OIL WYOMING LLC
A ROHLFF 10 49-027-05520Plugged OilJP OIL WYOMING LLC
A ROHLFF 3 49-027-05532Plugged OilMARATHON OIL COMPANY
A ROHLFF 6 49-027-05576Plugged OilMARATHON OIL COMPANY
ACKERMAN-FEDERAL 1 49-027-20228Plugged OilBEARD OIL COMPANY
AGNES ROHLFF 2 49-027-05481Plugged OilMARATHON OIL COMPANY
AGNES ROHLFF 4 49-027-05538Plugged OilMARATHON OIL COMPANY
AGNES ROHLFF 8 49-027-05545Plugged OilMARATHON OIL COMPANY
ALBERT CROM ETAL 1 49-027-05942Plugged OilUNION OIL CO OF CALIFORNIA
ALBERT E DEGERING 1 49-027-05695Plugged OilBECKER OIL COMPANY
ALEX GUNN 1 49-027-05747Plugged OilELK OIL & GAS COMPANY
ALICE HALES 1-10 49-027-20813Plugged OilKERR-MCGEE CORPORATION
ALICE SPAUGH-HEINE 1 49-027-05014Plugged OilDEWITT STONE & KEELINE SYNDICATE
ALICE-FEDERAL 1 49-027-20329Plugged OilDAVIS OIL COMPANY
ALTER 2 49-027-05043Plugged OilSHARPLES PHILLIP T TRUST
ALTER 1-X 49-027-05046Plugged OilSHARPLES PHILLIP T TRUST
ALTMAN 1 49-027-05801Plugged OilFUNDAMENTAL OIL
AMOCO-STATE 1 49-027-20280Plugged OilSIMASKO PRODUCTION CO
ANDERSON 1 49-027-05191Plugged OilGARY SAMUEL
ANDERSON 1 49-027-20011Plugged OilVAN NORMAN PIPE AND SUPPLY
ANDERSON EMILIA 1 49-027-20479Plugged OilCORONADO OIL COMPANY
ANDERSON FEE 2 49-027-20382Plugged OilANT HILLS PRODUCTION
ANDERSON-FEDERAL 1 49-027-20386Plugged OilANDERSON OIL COMPANY
ANDRIKOPOULOUS 1 49-027-20091Plugged OilMIDGARD ENERGY COMPANY
ANTELOPE FLATS 1-7 49-027-05848Plugged OilCOLORADO OIL & GAS CORPORATION
ANTOINE W-06279A 1 49-027-05808Plugged OilANT HILLS PRODUCTION
APACHE-FEDERAL 1 49-027-20046Plugged OilBLACK COAL RESOURCES COMPANY
APACHE-GOVT 1 49-027-06041Plugged OilM K M OIL COMPANY
APEX 4-3 49-027-05495Plugged OilCONOCO INC
APEX 2-3 49-027-05533Plugged OilMARATHON OIL COMPANY
APEX 4-6 49-027-05566Plugged InjectionUSA ENERGY LLC
APEX 1-4 49-027-05602Plugged OilCITATION OIL & GAS CORPORATION
APEX 3-3 49-027-07001Plugged OilCONOCO INC
APEX 1 WYC-66289 1 49-027-05595Plugged OilPROSPECTIVE INVEST & TRAD CO LTD
APEX 18 OPC C-66289 1-7 49-027-05571Plugged InjectionUSA ENERGY LLC
APEX 2 2 49-027-05435Plugged OilBUCK CREEK OIL COMPANY
APEX 2 4 49-027-05478Plugged OilCONOCO INC
APEX 2 5 49-027-05599Plugged OilCONOCO INC
APEX 2 5 49-027-05601Plugged OilCONOCO INC
APEX 2 3 49-027-60042Plugged OilBUCK CREEK OIL COMPANY
APEX 2 C-066289 6 49-027-05463Plugged OilCONOCO INC
APEX 3 5 49-027-05466Plugged OilPROSPECTIVE INVEST & TRAD CO LTD
APEX 3 1 49-027-05467Plugged OilCONOCO INC
APEX 3 4 49-027-05489Plugged OilCONOCO INC
APEX 3 7 49-027-05522Plugged OilPROSPECTIVE INVEST & TRAD CO LTD
APEX 4 2 49-027-05414Plugged OilCONOCO INC
APEX 4 4 49-027-05516Plugged InjectionDAMSON OIL CORPORATION
APEX 4 3 49-027-05521Plugged InjectionDAMSON OIL CORPORATION
APEX 4 11 49-027-05547Plugged OilUSA ENERGY LLC
APEX 4 13 49-027-05568Plugged OilPROSPECTIVE INVEST & TRAD CO LTD
APEX 4 5 49-027-05594Plugged OilUSA ENERGY LLC
APEX 7 12 49-027-05590Plugged InjectionPROSPECTIVE INVEST & TRAD CO LTD
APEX OPC 8 WYC-66289 1-10 49-027-05606Plugged OilPROSPECTIVE INVEST & TRAD CO LTD
APEX OPC-21 WYC66289 1-9 49-027-05550Plugged OilFINLEY RESOURCES INC
APEX OPC-9 C-66289 1-11 49-027-05604Plugged OilUSA ENERGY LLC
APEX-1 PATENT 1-5 49-027-05548Plugged OilUSA ENERGY LLC
APEX-1 WYC 066289 3 49-027-05515Plugged InjectionDAMSON OIL CORPORATION
APEX-3 2 49-027-05537Plugged OilCONOCO INC

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