TEXAS · WELLS · ZAPATA COUNTY · CARILLO-PENA UNIT NO. 1 LEASE · API 42-505-31054 · DISTRICT 04

Carillo-Pena Unit No. 1 #1

Plugged

Zapata County · Blancas Creek (8350) field · Vertical

Carillo-Pena Unit NO. 1 #1 (API 42-505-31054) is a plugged well in Zapata County, plugged July 19, 1994, last operated by Sanchez-O Brien Oil & Gas Corp..

The RRC has issued one drilling permit, issued November 16, 1978, permitted to 9,500 ft.

It was permitted by Sanchez-O'Brien Minerals Corp. and has since transferred to Sanchez-O Brien Oil & Gas Corp. on the wellbore schedule.

Operator of record

Sanchez-O Brien Oil & Gas Corp.

Permitted by Sanchez-O'Brien Minerals Corp.; the EWA schedule now lists a different operator.

Based in: Houston, TX
P-5 status: Inactive (I)
P-5 last filed: Aug 14, 1997
Permits on file: 493
Phone: (713) 783-8000

Watch this operator Watch Zapata County

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Sanchez-O Brien Oil & Gas Corp.
Production reports	none
Latest permit	Sanchez-O'Brien Minerals Corp.Nov 16, 1978

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

9,500: total depth, ft
1: permits on file
Nov 16, 1978: last permit issued
Jan 27, 1979: completed
0: cumulative oil, bbl
0: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 1994

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: Jan 27, 1979
Shut in: —
Plugged: Jul 19, 1994

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; this well is the only one on it.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Carillo-Pena Unit No. 1 G-4-82100	Blancas Creek (8350)	Sanchez-O'Brien Oil & Gas Corp.	1	0	0	Jan 1993 – Jul 1994

No volumes reported on these leases in the last three years.

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
37015-99	Drill	Sanchez-O'Brien Minerals Corp.	Nov 16, 1978	Nov 16, 1978	—	9,500

Completions

Completed	Lease	Field	Operator	Status	Depth
Jan 27, 1979	Carillo-Pena Unit No. 1 G-4-82100	Blancas Creek (8350)	Sanchez-O Brien Oil & Gas Corp.	Plugged	—

Perforations

Perforated and open-hole intervals.

From	To	Type
8,328	8,382	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
10.75	960	14.75	830 S
2.875	6,914	—	—
7.625	7,199	9.875	430 S
2.875	8,186	—	—

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	Jan 12, 1984	May 7, 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 42-505-31054 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-505-31054 → 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/50531054, documented in the API reference.