WELL · 42-353-00254 · DISTRICT 7
Cochran Est. #4
Nolan County · Group (4000) field · Vertical
Cochran Est. #4 (API 42-353-00254) is a well in Nolan County operated by Bustamante Oil Company, completed January 5, 1957.
The RRC has issued one drilling permit, issued February 16, 1996, permitted to 4,120 ft.
It was permitted by Robertson Resources, Inc. and has since transferred to Bustamante Oil Company on the wellbore schedule.
Its 2 leases have reported 78.7K barrels of oil and 89.8K mcf of gas since January 1993, last reporting in July 2026. The leases carry 8 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Robertson Resources, Inc.; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed May 4, 2026 · 4 permits on file · (432) 664-1103
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Bustamante Oil Company |
| Production reports | Robertson Resources, Inc.through Sep 2009 |
| Latest permit | Robertson Resources, Inc.Feb 16, 1996 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,120
- total depth, ft
- 1
- permits on file
- Feb 16, 1996
- last permit issued
- Jan 5, 1957
- completed
- 78.7K
- cumulative oil, bbl
- 89.8K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 5, 1957
- 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 2 leases this well is completed on; they carry 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cochran Est. O-8-5766 | Group (4000) | Bustamante Oil Company | 3 | 14.4K | 38.6K | Jan 1993 – Jul 2026 |
| Cochran Est. O-8-6998 | Group (Massive) | Bustamante Oil Company | 5 | 64.2K | 51.2K | Jan 1993 – Jul 2026 |
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.
- 1Foree, R. L. Trust "A"Jan 1993 → Dec 1993
- 2R & P OperatingJan 1994 → Jul 1994
- 3Robertson Resources, Inc.Aug 1994 → Jun 2009
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 444573-99 | Recompletion | Robertson Resources, Inc. | Feb 7, 1996 | Feb 16, 1996 | Feb 27, 1996 | 4,120 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-5766 | — | — | — | — |
| — | — O-8-6998 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,011 | 4,019 | Perforated |
| 4,055 | 4,059 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 350 | — | — |
| 9.625 | 354 | 12.5 | 200 S |
| 2 | 3,931 | — | — |
| 5.5 | 4,119 | 8.75 | 150 S |
| 5.5 | 4,119 | — | — |
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 | Jun 13, 1996 | — | — |
| 00 | May 22, 1996 | Jan 10, 1957 | — |
| 00 | Jan 12, 1984 | Jan 10, 1957 | — |
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 42-353-00254 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-353-00254 → 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/35300254, documented in the API reference.