WELL · 42-501-33538 · DISTRICT 8
Cox R. A. Heirs #1
Yoakum County · Bronco SW. (Devonian) field · Vertical
Cox R. A. Heirs #1 (API 42-501-33538) is a plugged well in Yoakum County, plugged February 21, 2005, last operated by Apache Corporation.
The RRC has issued one drilling permit, issued November 17, 1989, permitted to 12,500 ft.
It was permitted by Amerada Hess Corporation and has since transferred to Apache Corporation on the wellbore schedule.
Completion filings report 3 formation tops, including Clear Fork, Atoka, Woodford.
Its lease has reported 109K barrels of oil and 27.6K mcf of gas since January 1993, last reporting in July 2005. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Amerada Hess Corporation; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Dec 3, 2025
- Permits on file
- 9,756
- Phone
- (713) 954-5500
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Apache Corporation |
| Production reports | Apache Corporationthrough Sep 2003 |
| Latest permit | Amerada Hess CorporationNov 17, 1989 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,500
- total depth, ft
- 1
- permits on file
- Nov 17, 1989
- last permit issued
- Feb 26, 1990
- completed
- 109K
- cumulative oil, bbl
- 27.6K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2005
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 26, 1990
- Shut in
- —
- Plugged
- Feb 21, 2005
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 lease this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cox, R. A. Heirs O-11-66469 | Bronco, SW. (Devonian) | Apache Corporation | 2 | 109K | 27.6K | Jan 1993 – Jul 2005 |
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.
- 1Amerada Hess CorporationJan 1993 → Jun 1996
- 2Collins & Ware, Inc.Jul 1996 → Jun 2000
- 3Apache CorporationJul 2000 → Aug 2003
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 366464-99 | Drill | Amerada Hess Corporation | Nov 14, 1989 | Nov 17, 1989 | — | 12,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-66469 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,780 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Clear ForkCLEARFORK | 6,380 | -2,600 |
| Atoka | 11,192 | -7,412 |
| Woodford | 12,238 | -8,458 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,344 | 12,386 | Perforated |
| 12,387 | 12,399 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 11.75 | 422 | 14.75 | 300 S |
| 8.625 | 4,615 | 11 | 1,600 S |
| 5.5 | 12,387 | 7.875 | 425 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 →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Mar 22, 1990 | Mar 5, 1990 | Yes |
| 00 | Mar 10, 1990 | — | — |
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.
- Wellbore filings for 42-501-33538 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-501-33538 → scanned completion filings
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/50133538, documented in the API reference.