WELL · 42-353-31765 · DISTRICT 7
Cochran-Railroad Unit #8A
Nolan County · Suggs (Ellenburger) field · Vertical
Cochran-Railroad Unit #8A (API 42-353-31765) is a plugged well in Nolan County, plugged September 26, 2001, last operated by Goodrock Natural Resources LLC.
The RRC has issued 2 drilling permits between 1985 and 1995, permitted to 7,000 ft.
It was permitted by Robertson Resources, Inc. and has since transferred to Goodrock Natural Resources LLC on the wellbore schedule.
Completion filings report one formation top, including Ellenburger.
Its 2 leases have reported 82.9K barrels of oil and 84.2K mcf of gas since January 1993, last reporting in May 2023. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
Goodrock Natural Resources LLC
Permitted by Robertson Resources, Inc.; the EWA schedule now lists a different operator.
- Based in
- Tulsa, OK
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Nov 25, 2025
- Permits on file
- 59
- Phone
- (918) 398-0400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Goodrock Natural Resources LLC |
| Production reports | Goodrock Natural Resources, LLCthrough Apr 2020 |
| Latest permit | Robertson Resources, Inc.Nov 22, 1995 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,000
- total depth, ft
- 2
- permits on file
- Nov 22, 1995
- last permit issued
- Apr 23, 1985
- completed
- 82.9K
- cumulative oil, bbl
- 84.2K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH May 2023
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 23, 1985
- Shut in
- —
- Plugged
- Sep 26, 2001
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cochran-Railroad Unit O-8-22401 | Suggs (Ellenburger) | Goodrock Natural Resources, LLC | 2 | 82.7K | 73.2K | Jan 1993 – May 2023 |
| Cochran, J. H. O-8-27718 | Group (Massive) | Robertson Resources, Inc. | 2 | 160 | 11K | Nov 1995 – Nov 2001 |
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.
- 1Oryx Energy CompanyJan 1993 → Oct 1994
- 2Samson Resources CompanyNov 1994 → Mar 1995
- 3Samson Hydrocarbons CompanyApr 1995 → Jul 1996
- 4Robertson Resources, Inc.Nov 1995 → Aug 1996
- 5Samson Lone Star LPAug 1996 → Jun 2007
- 6Samson Lone Star, LLCJul 2007 → Dec 2010
- 7Three Rivers Operating Co LLCJan 2011 → Jul 2012
- 8COG Operating LLCAug 2012 → Sep 2012
- 9Legacy Reserves Operating LPJan 2013 → Oct 2018
- 10Goodrock Natural Resources, LLCNov 2018 → Jul 2019
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 442109-99 | Recompletion | Robertson Resources, Inc. | Nov 20, 1995 | Nov 22, 1995 | Nov 28, 1995 | 6,895 |
| 266829-99 | Drill | Sun Expl. & Prod. Co.-Abilene | Feb 12, 1985 | Feb 13, 1985 | Mar 16, 1985 | 7,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-22401 | — | — | — | — |
| — | — O-8-27718 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,330 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Ellenburger | 6,657 | -4,327 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,118 | 4,125 | Perforated |
| 6,657 | 6,736 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 363 | 12.25 | 300 S |
| 5.5 | 6,895 | 7.875 | 1,650 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 | Dec 5, 1996 | Sep 26, 1996 | — |
| 00 | Dec 28, 1995 | Jun 6, 1985 | — |
| 00 | Jul 30, 1985 | Jun 6, 1985 | — |
| 00 | Jul 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.
- Wellbore filings for 42-353-31765 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-353-31765 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 400K
- bbl, last 12 reported months
- 478K
- bbl, all reported
- Nov 2001
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000084760 | H-1 Injection | Plugged Oct 12, 2001 | 1,000 | 2,050 | 4,118–4,125 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 400,065 · prior 12 0
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/35331765, documented in the API reference.