SIERRA EXPL CO inactive

op#780213 // since 1978-10-06// P-5: active

900 NE LOOP 410 STE 408, SAN ANTONIO
MOUNT, DON L.— PRESIDENTCOLELLA, SARA MOUNT— VICE PRESIDENT/TREASURERLANEY, BETTY— SECRETARY

spud_rate

43%

29 of 68 (6mo+)

median_spud_days

14

p25-p75: 10-46d

cancel_rate

0%

0 cancelled

expired_undrilled

39

avg_permits/yr

2

trajectory: inactive active_years: 28 horizontal: 0% top_county: JACK

permits (all)

64

first_permit

1978-10-06

counties (all)

12

avg_depth (all)

4,481

hz_pct (all)

0%

last_active

2005-11-03

basins (all): Gulf Coast (South) // Gulf Coast (Central) // Gulf Coast (Southwest) // Eagle Ford / Maverick // Barnett / North Texas
depth_range (all): 1,800 - 12,022 ft

DRILL

64

-- current_portfolio (RRC scheduling system)

total_wells

12

on_schedule

0

producing

0

shut_in

0

acquired

from other operators

divested

31

to other operators

counties

JACK 10
CONCHO 1
THROCKMORTON 1

fields

AMBRA (STRAWN) 4
JACK COUNTY REGULAR (GAS) 3
HULL (CADDO A) 1
LYNN CREEK (CADDO) 1
THROCKMORTON COUNTY REGULAR 1
JACK COUNTY REGULAR 1
FROG POND CREEK (COOK SAND) 1
cum_oil: 50,651 BBL cum_gas: 280,477 MCF

-- wells_operated (12)

APILEASEFIELDCOUNTYSTATUSSCHED
23730631CRUM R. L.AMBRA (STRAWN)JACKN
44734445DYSINGERTHROCKMORTON COUNTY REGULARTHROCKMORTONN
23732028EATHERLYJACK COUNTY REGULAR (GAS)JACKN
09530611E. BECKFROG POND CREEK (COOK SAND)CONCHON
23733090HULL J. D.HULL (CADDO A)JACKN
23732152LEATHERWOOD DENJACK COUNTY REGULAR (GAS)JACKN
23730282LOWRANCEAMBRA (STRAWN)JACKN
23730732LOWRANCEAMBRA (STRAWN)JACKN
23736558LOWRANCEAMBRA (STRAWN)JACKN
23731151PEMBERTON RAYJACK COUNTY REGULAR (GAS)JACKN
23732559POWELLLYNN CREEK (CADDO)JACKN
23732136VINSON R.JACK COUNTY REGULARJACKN

-- production_history

-- permit_history (all operated wells)

SOURCEPERMITAPITYPELEASECOUNTYISSUEDFROM/TO
filed60890629734653DRILLCARTWRIGHT -A-LIVE OAK2005-11-03
divested60890629734653DRILLCARTWRIGHT -A-LIVE OAK2005-11-03to: SIERRA EXPLORATION COMPANY
divested55301729734589DRILLCARTWRIGHTLIVE OAK2004-11-01to: SIERRA EXPLORATION CO.
filed55301729734589DRILLCARTWRIGHTLIVE OAK2004-11-01
filed55301829734588DRILLCARTWRIGHTLIVE OAK2004-11-01
divested55301829734588DRILLCARTWRIGHTLIVE OAK2004-11-01to: SIERRA EXPLORATION CO.
filed52478229734482DRILLCARTWRIGHTLIVE OAK2002-10-28
divested52478229734482DRILLCARTWRIGHTLIVE OAK2002-10-28to: SIERRA EXPLORATION CO.
filed50250529734410DRILLCARTWRIGHTLIVE OAK2000-11-30
filed50250529734410DRILLCARTWRIGHTLIVE OAK2000-11-30
divested49085429734378DRILLCARTWRIGHT, C. L. & H.LIVE OAK2000-01-07to: SIERRA EXPLORATION CO.
filed49085429734378DRILLCARTWRIGHT, C. L. & H.LIVE OAK2000-01-07
filed47200929734308DRILLCARTWRIGHT, C. L. & H.LIVE OAK1998-01-15
divested47200929734308DRILLCARTWRIGHT, C. L. & H.LIVE OAK1998-01-15to: SIERRA EXPLORATION COMPANY
filed36595516332590DRILLWILLIAMS, BLAKE JR.FRIO1989-11-07

-- permit_activity

EOF // multi-state drilling data platform // 2026