WELL · 42-165-31577 · DISTRICT 8
Robertson (San Andres) Unit #27
Gaines County · Robertson N. (San Andres) field · Vertical
Robertson (San Andres) Unit #27 (API 42-165-31577) is a well in Gaines County operated by Occidental Permian Eor LLC, completed April 24, 1979.
The RRC has issued one drilling permit, issued March 7, 1979, permitted to 4,780 ft.
It was permitted by Shell Oil Company and has since transferred to Occidental Permian Eor LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Yates, Seven Rivers, Queen, Grayburg.
Its lease has reported 4.68M barrels of oil and 1.65M mcf of gas since January 1993, last reporting in July 2026. The lease carries 73 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 60K barrels injected in the 12 months reported through October 2025.
Operator of record
Permitted by Shell Oil Company; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jan 21, 2026 · 2 permits on file · (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Occidental Permian EOR LLC |
| Production reports | Occidental Permian Ltd.through Apr 2026 |
| Latest permit | Shell Oil CompanyMar 7, 1979 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,780
- total depth, ft
- 1
- permits on file
- Mar 7, 1979
- last permit issued
- Apr 24, 1979
- completed
- 4.68M
- cumulative oil, bbl
- 1.65M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 24, 1979
- 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 lease this well is completed on; they carry 73 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Robertson (San Andres) Unit O-11-66037 | Robertson, N. (San Andres) | Occidental Permian EOR, LLC | 73 | 4.68M | 1.65M | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 28,531 · prior 12 26,404(+8%)
Gas, mcf lease total
Last 12 months 6,943 · prior 12 8,905(-22%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Shell Western E&P Inc.Jan 1993 → Feb 1997
- 2Altura Energy Ltd.Mar 1997 → Apr 2000
- 3Occidental Permian Ltd.May 2000 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 43893-99 | Drill | Shell Oil Company | Mar 7, 1979 | Mar 7, 1979 | Apr 6, 1979 | 4,780 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-66037 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,330 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,862 | 468 |
| Yates | 2,864 | 466 |
| Seven Rivers | 3,096 | 234 |
| Queen | 3,393 | -63 |
| Grayburg | 4,122 | -792 |
| San Andres | 4,406 | -1,076 |
| San Andres | 4,410 | -1,080 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,604 | 4,705 | Perforated |
| 4,606 | 4,705 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 45 | — | — |
| 8.625 | 1,835 | 12.25 | 900 S |
| 2.875 | 4,652 | — | — |
| 5.5 | 4,785 | 7.875 | 1,655 S |
| 5.5 | — | 7.875 | 980 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 | Oct 29, 2025 | Oct 6, 2025 | — |
| 00 | Sep 12, 1988 | Aug 26, 1988 | — |
| 00 | Sep 3, 1988 | May 11, 1979 | — |
| 00 | Sep 17, 1987 | May 11, 1979 | — |
| 00 | Sep 12, 1987 | — | — |
| 00 | Jan 12, 1984 | May 11, 1979 | — |
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 42-165-31577 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-165-31577 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. then paste it into their search.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 60K
- bbl, last 12 reported months
- 2.97M
- bbl, all reported
- Oct 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000064330 | H-1 Injection | Active | 500 | 1,650 | 4,500–4,800 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 59,975 · prior 12 35,674(+68%)
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/16531577, documented in the API reference.