TEXAS · WELLS · BORDEN COUNTY · API 42-033-30630 · DISTRICT 7B
Borden (Spraberry) Unit #2
Borden County · Reo (JO Mill Lower) field · Water Supply · Vertical
Borden (Spraberry) Unit #2 (API 42-033-30630) is a well in Borden County operated by Estancia Oil & Gas LLC, completed September 27, 1991 and listed as water supply on the RRC schedule, shut in February 1, 2026.
The RRC has issued one drilling permit, issued January 26, 1981, permitted to 7,584 ft.
It was permitted by Tamarack Petroleum Company, Inc. and has since transferred to Estancia Oil & Gas LLC on the wellbore schedule.
Completion filings report one formation top, including Santa Rosa.
Its 3 leases have reported 1.49M barrels of oil and 426K mcf of gas since January 1993, last reporting in July 2026. The leases carry 19 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Tamarack Petroleum Company, Inc.; the EWA schedule now lists a different operator.
- Based in
- Austin, TX
- P-5 status
- Active (A)
- P-5 last filed
- Sep 18, 2025
- Permits on file
- 37
- Phone
- (512) 328-3310
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Estancia Oil & Gas LLC |
| Production reports | Estancia Oil & Gas, LLCthrough Mar 2026 |
| Latest permit | Tamarack Petroleum Company, Inc.Jan 26, 1981 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,584
- total depth, ft
- 1
- permits on file
- Jan 26, 1981
- last permit issued
- Sep 27, 1991
- completed
- 1.49M
- cumulative oil, bbl
- 426K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 27, 1991
- Shut in
- Feb 1, 2026
- 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 3 leases this well is completed on; they carry 19 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Borden (Spraberry) Unit O-11-66710 | Reo (JO Mill, Lower) | Estancia Oil & Gas, LLC | 19 | 1.49M | 426K | Jan 1993 – Jul 2026 |
| — O-11-61028 | — | — | 0 | 0 | 0 | — |
| — O-11-66537 | — | — | 0 | 0 | 0 | — |
Oil, barrels lease total
Last 12 months 25,105 · prior 12 30,055(-16%)
Gas, mcf lease total
Last 12 months 6,226 · prior 12 7,830(-20%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1General Atlantic Resources, Inc.Jan 1993 → Dec 1994
- 2Umc Petroleum CorporationJan 1995 → Jul 1998
- 3Ocean Energy, Inc.Aug 1998 → May 2000
- 4Honeck Oil CompanyJun 2000 → Apr 2007
- 5Honeck Oil Company, LPMay 2007 → Dec 2010
- 6Estancia Oil & Gas, LLCJan 2011 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 143036-99 | Drill | Tamarack Petroleum Company, Inc. | Jan 26, 1981 | Jan 26, 1981 | Aug 27, 1981 | 7,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Sep 27, 1991 | Borden (Spraberry) Unit O-11-66710 | Reo (JO Mill Lower) | Estancia Oil & Gas LLC | Water Supply · shut in Feb 1, 2026 | 7,584 |
| Oct 25, 1981 | Nunnally A O-11-66537 | Reo (JO Mill Lower) | Tamarack Petroleum Company Inc. | Not on Schedule | — |
| Oct 25, 1981 | Nunnally A O-11-61028 | Borden (Spraberry) | Tamarack Petroleum Company Inc. | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,962 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 1,183 | 1,779 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,183 | 1,213 | Perforated |
| 7,382 | 7,394 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 12.75 | 335 | 17.5 | 350 S |
| 4.5 | 2,616 | 7.875 | 795 S |
| 8.625 | 3,484 | 11 | 350 S |
| 2.375 | 7,373 | — | — |
| 4.5 | 7,584 | 7.875 | 750 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 25, 1991 | Oct 14, 1991 | — |
| 00 | Aug 10, 1990 | Dec 10, 1981 | — |
| 00 | Aug 9, 1990 | — | — |
| 00 | Jan 12, 1984 | Dec 10, 1981 | — |
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 42-033-30630 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-033-30630 → 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/03330630, documented in the API reference.