TEXAS · WELLS · GAINES COUNTY · PIERSON, WILLIAM ESTATE LEASE · API 42-165-34813 · DISTRICT 7B
Pierson William Estate #21
Gaines County · Russell S. (San Andres) field · Producing · Vertical
Pierson William Estate #21 (API 42-165-34813) is a well in Gaines County operated by Hilcorp Energy Company, completed January 9, 1995 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued December 1, 1994, permitted to 5,200 ft.
It was permitted by Cross Timbers Operating Company and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 4 formation tops, including San Andres, Main Wasson Pay, Main Wasson S.A. Pay, Lower Wasson S.A. Pay.
Its lease has reported 941K barrels of oil and 1.02M mcf of gas since January 1993, last reporting in July 2026. The lease carries 7 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Cross Timbers Operating Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,454
- Phone
- (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hilcorp Energy Company |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Cross Timbers Operating CompanyDec 1, 1994 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,200
- total depth, ft
- 1
- permits on file
- Dec 1, 1994
- last permit issued
- Jan 9, 1995
- completed
- 941K
- cumulative oil, bbl
- 1.02M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 9, 1995
- 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 7 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Pierson, William Estate O-11-18452 | Russell, S. (San Andres) | Hilcorp Energy Company | 7 | 941K | 1.02M | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 18,364 · prior 12 19,774(-7%)
Gas, mcf lease total
Last 12 months 6,982 · prior 12 12,541(-44%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Shell Western E&P Inc.Jan 1993 → Apr 1993
- 2Cross Timbers Operating CompanyMay 1993 → May 2001
- 3XTO Energy Inc.Jun 2001 → Apr 2025
- 4Hilcorp Energy CompanyMay 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 430472-99 | Drill | Cross Timbers Operating Company | Nov 30, 1994 | Dec 1, 1994 | Dec 28, 1994 | 5,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 9, 1995 | Pierson William Estate O-11-18452 | Russell S. (San Andres) | Hilcorp Energy Company | Producing | 5,200 |
Formation tops
As filed on W-2/G-1. Subsea from 3,544 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San AndresUPPER SAN ANDRES | 4,747 | -1,203 |
| Main Wasson Pay | 4,920 | -1,376 |
| Main Wasson S.A. Pay | 4,920 | -1,376 |
| Lower Wasson S.A. Pay | 5,010 | -1,466 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,759 | 5,034 | Perforated |
| 5,014 | 5,034 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 386 | 12.25 | 235 S |
| 5.5 | 5,200 | 7.875 | 1,400 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 16, 1996 | Apr 11, 1996 | — |
| 00 | May 18, 1995 | Feb 8, 1995 | Yes |
| 00 | May 12, 1995 | — | — |
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 42-165-34813 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-165-34813 → 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.
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/16534813, documented in the API reference.