WELL · 42-275-31656 · DISTRICT 7

Orsborn #29

Plugged

Knox County · Katz (Strawn) field  · Vertical

Orsborn #29 (API 42-275-31656) is a plugged well in Knox County, plugged February 27, 2013, last operated by Cholla Petroleum Inc..

The RRC has issued 2 drilling permits between 1985 and 1990, permitted to 5,270 ft.

It was permitted by Conoco Inc. and has since transferred to Cholla Petroleum Inc. on the wellbore schedule.

Completion filings report 4 formation tops, including 4800 Strawn, Katz, 5100' Strawn, Katz 5100.

Its 3 leases have reported 333K barrels of oil and 42.7K mcf of gas since January 1993, last reporting in February 2017. The leases carry 57 wells, so these are lease totals, not this well alone.

Operator of record

Cholla Petroleum Inc.

Permitted by Conoco Inc.; the EWA schedule now lists a different operator.

Dallas, TX · P-5 Y, filed Feb 4, 2026 · 1,085 permits on file · (800) 839-2955

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleCholla Petroleum Inc.
Production reportsApache Corporationthrough Apr 2015
Latest permitConoco Inc.Nov 16, 1990

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

5,270
total depth, ft
2
permits on file
Nov 16, 1990
last permit issued
Nov 14, 2011
completed
333K
cumulative oil, bbl
42.7K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Feb 2017

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
Nov 14, 2011
Shut in
—
Plugged
Feb 27, 2013

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 3 leases this well is completed on; they carry 57 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Orsborn O-8-30427Katz (Strawn)Cholla Petroleum, Inc.109.04K0Nov 2009 – Feb 2017
Orsborn O-8-20334KatzApache Corporation18154K22.8KJan 1993 – May 2010
Orsborn Unit O-8-20333Katz (5100)Apache Corporation29169K19.8KJan 1993 – Dec 2009

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. 1Conoco Inc.Jan 1993 → Jan 1996
  2. 2Enervest Operating, L.L.C.Feb 1996 → Feb 1998
  3. 3Coda Energy, Inc.Mar 1998 → Aug 1998
  4. 4Belco Energy Corp.Sep 1998 → Feb 2002
  5. 5Westport Oil and Gas Company, LPMar 2002 → Feb 2006
  6. 6Kerr-McGee Oil & Gas Onshore LPMar 2006 → Mar 2007
  7. 7Apache CorporationApr 2007 → Apr 2015

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
380990-99RecompletionConoco Inc.Nov 13, 1990Nov 16, 1990—5,270
264904-99DrillConoco Inc.Jan 21, 1985Jan 23, 1985Feb 4, 19855,270

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-8-20333————
—— O-8-20334————
—— O-8-30427————

Formation tops

As filed on W-2/G-1. Subsea from 1,435 ft elevation.Download CSV →

FormationMD ftSubsea
4800 Strawn4,828-3,393
Katz4,828-3,393
5100' Strawn5,052-3,617
Katz 51005,052-3,617

Perforations

Perforated and open-hole intervals.

FromToType
4,8284,833Perforated
4,8285,064Perforated
5,0525,046Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
8.62513212.25240 S
5.55,2077.875715 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
00Mar 12, 2012Dec 7, 2011—
00Dec 2, 2009Nov 19, 1990—
00Apr 12, 1991Nov 19, 1990—
00Dec 12, 1990——
00Jul 25, 1985Apr 22, 1985—
00Jul 23, 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/27531656, documented in the API reference.