Petrora

WELL · 42-355-32451 · DISTRICT 4

C. N. Cooke Unit #6

N

Nueces County  · Vertical

C. N. Cooke Unit #6 (API 42-355-32451) is a permitted well in Nueces County filed by Opex Energy, LLC; no completion report is on file yet.

The RRC has issued 9 drilling permits (amended once) between 1985 and 2005, permitted to 10,400 ft.

Completion filings report 21 formation tops, including Frio, 7450 Sand, 7525, 7525sand.

Its 9 leases have reported 38.6K barrels of oil and 380K mcf of gas since January 1993, last reporting in July 2026. The leases carry 5 wells, so these are lease totals, not this well alone.

Operator of record

Opex Energy, LLC

Houston, TX · P-5 Y, filed Feb 8, 2008 · 19 permits on file

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedulenone
Production reportsJubilee Resources, Ltd.through Apr 2012
Latest permitOpex Energy, LLCOct 20, 2005
10,400
total depth, ft
10
permits on file
Oct 20, 2005
last permit issued
—
completed
38.6K
cumulative oil, bbl
380K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
—
Shut in
—
Plugged
—

Surface location

No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.

Lease production

PDQ LEASE REPORTS · REPORTED THROUGH APR 2026

Texas reports oil by lease, not by well. These are the 9 leases this well is completed on; they carry 5 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
C. N. Cooke Unit O-4-13330Doughty (7700)Jubilee Resources, Ltd.110.4K48.4KDec 2005 – Jul 2026
C. N. Cooke Unit O-4-13013Doughty (Frio 8730)Opex Energy, LLC126.8K62.9KMar 2001 – Feb 2006
C.N. Cooke G-4-153169Doughty (7450 SD)Bison Energy Partners, Inc.10228KFeb 1995 – Mar 2001
C.N. Cooke Unit O-4-12370Doughty (8000)Hunt Oil Company11.31K12.7KJul 1994 – Apr 1995
C. N. Cooke Unit G-4-139732Doughty, W. (Frio 8460)Hunt Oil Company1028KJan 1993 – Nov 1994
— G-4-137249——000—
— G-4-137251——000—
— O-4-10924——000—
— O-4-11576——000—

No volumes reported on these leases in the last three years.

Chain of custody

Every operator that reported production on this well's lease, in order.

  1. 1Hunt Oil CompanyJan 1993 → Jun 1997
  2. 2Bison Energy Partners, Inc.Mar 2001 → Aug 2001
  3. 3Bison Energy Partners, Ltd.Sep 2001 → Apr 2002
  4. 4White Oak Operating Company LLCMay 2002 → Jun 2004
  5. 5Opex Energy, LLCJul 2004 → Mar 2007
  6. 6Exploration Company, TheApr 2007 → Jun 2007
  7. 7Txco Resources Inc.Jul 2007 → Aug 2007
  8. 8Quorum Energy CompanySep 2007 → Nov 2010
  9. 9Jubilee Resources, Ltd.Jan 2011 → Apr 2012

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
608244-99RecompletionOpex Energy, LLCOct 20, 2005Oct 20, 2005Dec 5, 200510,350
507187-99RecompletionBison Energy Partners, Inc.Mar 29, 2001Mar 29, 2001Mar 1, 200110,350
433090-99RecompletionHunt Oil CompanyFeb 21, 1995Feb 23, 1995Feb 2, 199510,350
423965-99RecompletionHunt Oil CompanyMay 16, 1994May 19, 1994Jun 28, 199410,350
388621-98RecompletionPacific Enterprises Oil Co.(usa)Sep 9, 1991Jun 6, 1991Aug 17, 19918,800
388621-99RecompletionPacific Enterprises Oil Co.(usa)Jun 4, 1991Jun 6, 1991—10,350
379870-99RecompletionPacific Enterprises Oil Co.(usa)Oct 22, 1990Oct 25, 1990Jan 9, 199110,350
352612-99RecompletionTerra Resources, Inc.Oct 24, 1988Oct 25, 1988—10,350
344121-99RecompletionTerra Resources, Inc.Mar 21, 1988Mar 21, 1988—10,350
278686-99DrillMcCord Exploration Co.Dec 27, 1985Jun 26, 1985Jul 20, 198510,400

Completions

CompletedLeaseFieldOperatorStatusDepth
—— G-4-137249————
—— G-4-137251————
—— G-4-139732————
—— G-4-153169————
—— O-4-10924————
—— O-4-11576————
—— O-4-12370————
—— O-4-13013————
—— O-4-13330————

Formation tops

As filed on W-2/G-1. Subsea from 34 ft elevation.Download CSV →

FormationMD ftSubsea
Frio5,414-5,380
Frio5,415-5,381
7450 Sand7,446-7,412
75257,522-7,488
7525SAND7,522-7,488
7525' Sand7,522-7,488
7525 SD7,522-7,488
7525' SD7,522-7,488
Doughty Frio7,522-7,488
Doughty(frio 7525)7,522-7,488
7700 Sand7,706-7,672
77007,708-7,674
7700' Sand7,708-7,674
7700 SD7,708-7,674
7700' SD7,708-7,674
8000 Sand8,003-7,969
8460 Sand8,400-8,366
8880 Sand8,882-8,848
8970 Sand8,970-8,936
L. Frio9,325-9,291
L.frio9,325-9,291
FrioLOWER FRIO9,325-9,291
9530 Sand9,516-9,482

Perforations

Perforated and open-hole intervals.

FromToType
7,4467,449Perforated
7,5227,525Perforated
7,6867,695Perforated
7,7067,710Perforated
7,7087,710Perforated
8,0038,007Perforated
8,4008,404Perforated
8,7248,732Perforated
8,8828,884Perforated
8,9728,974Perforated
9,5169,530Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6251,005—258 S
9.6251,00512.25423 S
5.510,3458.752,000 S

Completion filings

W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →

SuffixFiledW-2 / G-1 dateLogs referenced
00May 8, 2006Dec 19, 2005Yes
00Feb 7, 2006——
00Jun 20, 2001Apr 11, 2001Yes
00May 8, 2001——
00Apr 12, 1995Feb 24, 1995Yes
00Mar 10, 1995——
00Oct 26, 1994Jul 29, 1994Yes
00Aug 25, 1994——
00Nov 21, 1991Sep 5, 1991Yes
00Nov 6, 1991——
00Apr 10, 1991Feb 11, 1991Yes
00Mar 20, 1991——
00Jul 20, 1990May 4, 1990—
00Sep 6, 1989Jan 19, 1989—
00Mar 7, 1989——
00Jan 5, 1989May 4, 1988—
00Sep 26, 1988May 4, 1988Yes
00Aug 9, 1988Nov 13, 1985Yes
00Jul 29, 1988May 4, 1988Yes
00Jul 2, 1988——
00May 20, 1988Feb 29, 1988—
00Apr 9, 1988——
00Jun 4, 1986Nov 13, 1985Yes
00Jan 14, 1986Nov 13, 1985Yes
00Jan 10, 1986——
00Jan 1, 1986Nov 13, 1985Yes
00Dec 27, 1985Nov 13, 1985Yes
00Dec 18, 1985——

The source documents

Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.

Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.

About this data

Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.

New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease

Developers: this page as JSON is GET /v1/data/wells/35532451, documented in the API reference.