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Boulder County, CO oil and gas wells

783 wells: 111 active, 400 plugged, run by 95 operators.

Figures from the Colorado Energy and Carbon Management Commission, updated 2026-10-16.

Top operators in Boulder

OperatorActiveWells here
CRESTONE PEAK RESOURCES OPERATING LLC71126
EXTRACTION OIL & GAS INC39157
PHOENIX RESOURCES LLC11
GERRITY OIL & GAS CORP091
ENCANA OIL & GAS (USA) INC047
OLD OPERATORS - STATUS UNKNOWN044
BASIN EXPLORATION INC019
MARTIN EXPLORATION MANAGEMENT CO019
NOBLE ENERGY INC018
MEYER OIL COMPANY017
KERR MCGEE OIL & GAS ONSHORE LP016
VESSELS OIL & GAS COMPANY010
WISSOTA PETROLEUM CORP09
HS RESOURCES INC07
NORTH AMERICAN RESOURCES COMPANY07
ENERGY & CARBON MANAGEMENT COMMISSION06
PATINA OIL & GAS CORPORATION06
TOP OPERATING COMPANY06
XO EXPLORATION INC05
CAERUS WASHCO LLC04
CDM OIL & GAS04
FRONTIER O & G CO OF TEXAS INC04
PDC ENERGY INC04
PRIMA EXPLORATION INC04
UNIVERSAL OPERATING COMPANY04

Wells

Not plugged · All wells · Plugged · Orphaned

WellAPI / IDStatusTypeOperator
JUHL 1 05-013-60006Plugged Dry holeJUHL* MARIUS & ASSOCIATES
KAHAN 18-3 05-013-06132Cancelled / expired GasCAERUS WASHCO LLC
KANE 20-10 05-013-06048Plugged GasEXTRACTION OIL & GAS INC
KATHEY 21-13 05-013-06227Plugged Dry holePRIMA EXPLORATION INC
KILKER 1-15 05-013-06285Active GasEXTRACTION OIL & GAS INC
KIRK MC 28-10SLT 05-013-06484Cancelled / expired UnknownGERRITY OIL & GAS CORP
KRAMER 22-23 05-013-06455Plugged OilKERR MCGEE OIL & GAS ONSHORE LP
KRAMER 21-23 05-013-06465Plugged OilKERR MCGEE OIL & GAS ONSHORE LP
LABER 2 05-013-06211Plugged Dry holeFRONTIER O & G CO OF TEXAS INC
LABER 20-42 05-013-06213Plugged Dry holePRIMA EXPLORATION INC
LABER 34-24 05-013-06548Active GasCRESTONE PEAK RESOURCES OPERATING LLC
LABER 44-24 05-013-06578Active GasCRESTONE PEAK RESOURCES OPERATING LLC
LABER 6-8-24 05-013-06644Cancelled / expired UnknownENCANA OIL & GAS (USA) INC
LABER 4-6-24 05-013-06645Cancelled / expired UnknownENCANA OIL & GAS (USA) INC
LABER 4-8-24 05-013-06646Cancelled / expired UnknownENCANA OIL & GAS (USA) INC
LABER 1 05-013-60019Plugged Dry holeP..M. ENTERPRISES
LABER K UNIT 1 05-013-06109Plugged GasCRESTONE PEAK RESOURCES OPERATING LLC
LAFFERTY McBROOM 1 05-013-60009Plugged Dry holeLAFFERTY* R.F.
LAKE HILLS 41-2 05-013-06168Plugged Dry holeJRC OIL
LAKE HILLS 31-2 05-013-06170Plugged Dry holeJRC OIL
LAWSON 1-19 05-013-06014Plugged Dry holeCAERUS WASHCO LLC
LEFEVER 1-17 1-17 05-013-06121Plugged Dry holeGERRITY OIL & GAS CORP
LEISTIKOW 1 05-013-06483Plugged GasBLUE CHIP OIL INC
LEWIS 9-2 05-013-06024Cancelled / expired UnknownWINTER HAWK LTD
LEWIS 9-1 05-013-06025Plugged Dry holeWINTER HAWK LTD
LEWIS F UNIT 1 05-013-06143Cancelled / expired GasVESSELS OIL & GAS COMPANY
LEYNER 1-15 05-013-06049Shut in GasEXTRACTION OIL & GAS INC
LEYNER MC 15-11 05-013-06317Cancelled / expired UnknownGERRITY OIL & GAS CORP
LEYNER MC 15-3J 05-013-06318Cancelled / expired GasGERRITY OIL & GAS CORP
LEYNER MC 15-13 05-013-06319Cancelled / expired UnknownGERRITY OIL & GAS CORP
LILEY 1-13 05-013-06261Plugged GasEXTRACTION OIL & GAS INC
LILEY MD 12-3J 05-013-06462Cancelled / expired UnknownGERRITY OIL & GAS CORP
LILEY GREEN MD 12-3J 05-013-06337Plugged GasEXTRACTION OIL & GAS INC
LINDSAY 35-1 05-013-06082Cancelled / expired GasCAERUS WASHCO LLC
LORE 1 05-013-05032Plugged Dry holeP.M. PETROLEUM CORP.
LOUKONEN 1 05-013-05150Plugged Dry holeOLD OPERATORS - STATUS UNKNOWN
LUDLOW 33-21 05-013-06216Plugged Dry holePRIMA EXPLORATION INC
LUMRY 24-2 05-013-06492Cancelled / expired UnknownNORTH AMERICAN RESOURCES COMPANY
LUMRY 24-8 05-013-06493Cancelled / expired UnknownNORTH AMERICAN RESOURCES COMPANY
LUMRY 32-24 05-013-06572Active GasCRESTONE PEAK RESOURCES OPERATING LLC
LUMRY 8-2-24 05-013-06573Active GasCRESTONE PEAK RESOURCES OPERATING LLC
LUMRY 42-24 05-013-06574Plugged GasCRESTONE PEAK RESOURCES OPERATING LLC
LUMRY 6-4-24 05-013-06575Active GasCRESTONE PEAK RESOURCES OPERATING LLC
LUMRY 31-24 05-013-06576Plugged GasCRESTONE PEAK RESOURCES OPERATING LLC
LUMRY 6-0-24 05-013-06577Active GasCRESTONE PEAK RESOURCES OPERATING LLC
LUMRY G UNIT 1 05-013-06182Shut in GasCRESTONE PEAK RESOURCES OPERATING LLC
LUMRY UNIT 42-24 05-013-06495Cancelled / expired UnknownNORTH AMERICAN RESOURCES COMPANY
LUTZ 1 05-013-06020Shut in GasEXTRACTION OIL & GAS INC
LYN USX MC 5-23 05-013-06538Active GasEXTRACTION OIL & GAS INC
LYN USX MC 05-05 05-013-06594Shut in OilEXTRACTION OIL & GAS INC
LYNCH 1-6 05-013-06038Plugged GasEXTRACTION OIL & GAS INC
LYNCH MC 6-9 05-013-06383Shut in GasEXTRACTION OIL & GAS INC
LYNCH MC 6-10 05-013-06384Plugged OilEXTRACTION OIL & GAS INC
LYNCH MC 6-15 05-013-06385Plugged GasEXTRACTION OIL & GAS INC
Lyn USX MC05-62HN 05-013-06643Cancelled / expired UnknownNOBLE ENERGY INC
MABEL-ROSS 1 05-013-06078Cancelled / expired GasVESSELS OIL & GAS COMPANY
MACHEBEUF 1-12 05-013-06265Cancelled / expired UnknownMARTIN EXPLORATION MANAGEMENT CO
MACHEBEUF 1-12 05-013-06270Plugged GasEXTRACTION OIL & GAS INC
MACHEBEUF MD 12-9 05-013-06336Shut in GasEXTRACTION OIL & GAS INC
MACY 3-1 05-013-06051Plugged GasEXTRACTION OIL & GAS INC
MACY 2(3) 05-013-06088Active GasEXTRACTION OIL & GAS INC
MACY MC 3-4JI 05-013-06499Cancelled / expired UnknownPATINA OIL & GAS CORPORATION
MADDEN 1 (OWP) 05-013-05068Plugged Dry holeROCKY MOUNTAIN STANDARD, INC
MADDEN 2 (OWP) 05-013-05069Plugged Dry holeOLD OPERATORS - STATUS UNKNOWN
MAPZ MD 13-2 05-013-06368Plugged OilEXTRACTION OIL & GAS INC
MARIAN 1 05-013-60050Plugged Dry hole—
MARLATT 1 05-013-05080Plugged Dry holeOLD OPERATORS - STATUS UNKNOWN
MARTIN 1 05-013-05003Plugged Dry hole—
MARUYAMA 1 05-013-06099Plugged GasTOP OPERATING COMPANY
MARY 1-17 05-013-06203Plugged Dry holeMEYER OIL COMPANY
MARY 2 05-013-06226Plugged Dry holeUNIVERSAL OPERATING COMPANY
MARY MILLER 1-35 05-013-06150Active GasEXTRACTION OIL & GAS INC
MARY MILLER 2-35 05-013-06273Plugged GasEXTRACTION OIL & GAS INC
MARY MILLER 4-35 05-013-06274Active GasEXTRACTION OIL & GAS INC
MARY MILLER 3-35 05-013-06275Active GasEXTRACTION OIL & GAS INC
MAXWELL 5 (OWP) 05-013-05014Plugged Dry holeWARREN* JA
MAXWELL 1 05-013-40005Cancelled / expired UnknownWARREN* JA
MAXWELL 2 05-013-60015Plugged Dry holeOLD OPERATORS - STATUS UNKNOWN
MAXWELL 3 05-013-60017Plugged Dry holeWARREN* JA
MAY 42-23 05-013-06470Cancelled / expired UnknownBASIN EXPLORATION INC
MAY 42-23 05-013-06477Cancelled / expired UnknownBASIN EXPLORATION INC
MAYHOFFER-ROTOLO 25-2 05-013-06074Plugged Dry holeHS RESOURCES INC
MCCARTY 1-34 05-013-06101Active GasEXTRACTION OIL & GAS INC
MCCARTY MB 34-3 05-013-06431Plugged GasKERR MCGEE OIL & GAS ONSHORE LP
MCCARTY MB 34-11 05-013-06438Cancelled / expired UnknownGERRITY OIL & GAS CORP
MCCARTY MB 34-12 05-013-06439Cancelled / expired UnknownGERRITY OIL & GAS CORP
MCCARTY MB 34-13 05-013-06440Cancelled / expired UnknownGERRITY OIL & GAS CORP
MCCONNELL 1 05-013-05087Plugged Dry hole—
MCDONALD 1 05-013-06047Active GasCRESTONE PEAK RESOURCES OPERATING LLC
MCDONALD 43-25 05-013-06514Cancelled / expired UnknownENCANA OIL & GAS (USA) INC
MCDONALD 33-25 05-013-06515Cancelled / expired UnknownENCANA OIL & GAS (USA) INC
MCDONALD 33-25 05-013-06525Active GasCRESTONE PEAK RESOURCES OPERATING LLC
MCDONALD 43-25 05-013-06531Active GasCRESTONE PEAK RESOURCES OPERATING LLC
MCDONALD 34-25 05-013-06540Plugged OilCRESTONE PEAK RESOURCES OPERATING LLC
MCDONALD 4A-25H 05-013-06658Cancelled / expired UnknownENCANA OIL & GAS (USA) INC
MCDONALD 8-6-25 05-013-06659Cancelled / expired UnknownENCANA OIL & GAS (USA) INC
MCDONALD 6-8-25 05-013-06660Cancelled / expired UnknownENCANA OIL & GAS (USA) INC
MCDONALD 4-8-25 05-013-06661Cancelled / expired UnknownENCANA OIL & GAS (USA) INC
MCDONALD 4-6-25 05-013-06662Cancelled / expired UnknownENCANA OIL & GAS (USA) INC
MCGEE 1 05-013-06001Plugged Dry hole—

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