TEXAS · WELLS · GAINES COUNTY · WASSON SOUTH CLEARFORK UNIT LEASE · API 42-165-35239 · DISTRICT 7B
Wasson South Clearfork Unit #8543S
Gaines County · Wasson 72 field · Producing · Directional
Wasson South Clearfork Unit #8543S (API 42-165-35239) is a well in Gaines County operated by Occidental Permian Ltd., completed December 22, 1997 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued August 18, 1997, permitted to 7,600 ft.
It was permitted by Altura Energy Ltd. and has since transferred to Occidental Permian Ltd. on the wellbore schedule.
Completion filings report 7 formation tops, including Rustler, Yates, San Andres, Glorieta.
Its lease has reported 26.3M barrels of oil and 32.3M mcf of gas since January 1993, last reporting volume in April 2026. The lease carries 255 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Altura Energy Ltd.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Feb 2, 2026
- Permits on file
- 6,251
- Phone
- (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Occidental Permian Ltd. |
| Production reports | Occidental Permian Ltd.through Apr 2026 |
| Latest permit | Altura Energy Ltd.Aug 18, 1997 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,600
- total depth, ft
- 2
- permits on file
- Aug 18, 1997
- last permit issued
- Dec 22, 1997
- completed
- 26.3M
- cumulative oil, bbl
- 32.3M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 22, 1997
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 255 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Wasson South Clearfork Unit O-11-62865 | Wasson 72 | Occidental Permian Ltd. | 255 | 26.3M | 32.3M | Jan 1993 – Apr 2026 |
Oil, barrels lease total
Last 12 months 161,864 · prior 12 139,950(+16%)
Gas, mcf lease total
Last 12 months 119,745 · prior 12 92,757(+29%)
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 |
|---|---|---|---|---|---|---|
| 466071-98 | Drill | Altura Energy Ltd. | Oct 7, 1997 | Aug 18, 1997 | Nov 15, 1997 | 7,800 |
| 466071-99 | Drill | Altura Energy Ltd. | Aug 11, 1997 | Aug 18, 1997 | — | 7,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 22, 1997 | Wasson South Clearfork Unit O-11-62865 | Wasson 72 | Occidental Permian Ltd. | Producing | 7,600 |
Formation tops
As filed on W-2/G-1. Subsea from 3,540 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Rustler | 2,044 | 1,496 |
| Yates | 2,844 | 696 |
| San Andres | 4,266 | -726 |
| Glorieta | 5,682 | -2,142 |
| Middleclfk | 6,318 | -2,778 |
| Tubb | 7,018 | -3,478 |
| Lwr. Clfk | 7,101 | -3,561 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,232 | 7,368 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 415 | 17.5 | 400 S |
| 8.625 | 3,435 | 12.25 | 1,300 S |
| 5.5 | 7,595 | 7.875 | 1,825 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Aug 19, 1998 | Jun 12, 1998 | Yes |
| 00 | Aug 6, 1998 | — | — |
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 42-165-35239 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-165-35239 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it. The University Lands library has no per-well link: then paste it into its 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/16535239, documented in the API reference.