Petrora

TEXAS · WELLS · BROOKS COUNTY · API 42-047-31597 · DISTRICT 04

Mariposa Field Gas Unit #C21

Shut in

Brooks County · Mariposa (C11-N6 Cons. Gas) field · Temp Abandoned  · Vertical

Mariposa Field Gas Unit #C21 (API 42-047-31597) is a well in Brooks County operated by Merit Energy Company, completed April 4, 2008 and listed as temp abandoned on the RRC schedule, shut in November 1, 2007.

The RRC has issued 2 drilling permits (amended once) between 1991 and 1993, permitted to 9,200 ft.

It was permitted by Exxon Corp. and has since transferred to Merit Energy Company on the wellbore schedule.

Completion filings report 7 formation tops, including Frio, G-18 Sand, I-6 Sand, I-6sand.

No lease production has been reported under this well’s leases.

Operator of record

Merit Energy Company

Permitted by Exxon Corp.; the EWA schedule now lists a different operator.

Based in
Dallas, TX
P-5 status
Active (A)
P-5 last filed
Nov 7, 2025
Permits on file
1,049
Phone
(972) 701-8377
Watch this operatorWatch Brooks County

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleExxon Corp.
Production reportsExxon Mobil Corporationthrough Oct 2007
Latest permitExxon Corp.Dec 10, 1993

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

9,200
total depth, ft
3
permits on file
Dec 10, 1993
last permit issued
Apr 4, 2008
completed
0
cumulative oil, bbl
1.73M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Apr 4, 2008
Shut in
Nov 1, 2007
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 2 leases this well is completed on; they carry 2 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Mariposa Field Gas Unit G-4-148052Mariposa (N-4)Merit Energy Company101.67MDec 1993 – Jul 2026
Mariposa Field Gas Unit G-4-138402Mariposa (N-6)Exxon Corp.1051.1KJan 1993 – Jun 1999

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

Chain of custody

Every operator that reported production on this well's lease, in order.

  1. 1Exxon Corp.Jan 1993 → Mar 2000
  2. 2Exxon Mobil CorporationApr 2000 → Oct 2007

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
419221-99RecompletionExxon Corp.Dec 10, 1993Dec 10, 1993Dec 21, 19939,040
385255-98Field transferExxon Corp.Dec 9, 1993Mar 11, 1991—9,040
385255-99DrillExxon Corp.Mar 1, 1991Mar 11, 1991Mar 15, 199110,900

Completions

CompletedLeaseFieldOperatorStatusDepth
Apr 4, 2008Mariposa Field Gas Unit G-4-148052Mariposa (C11-N6 Cons. Gas)Merit Energy CompanyTemp Abandoned · shut in Nov 1, 20079,200
May 21, 1991Mariposa Field Gas Unit G-4-138402Mariposa (N-6)Exxon Corp.Not on Schedule—

Formation tops

As filed on W-2/G-1. Subsea from 109 ft elevation.Download CSV →

FormationMD ftSubsea
Frio4,200-4,091
G-18 Sand7,336-7,227
I-6 Sand7,767-7,658
I-6SAND7,767-7,658
K-46 Sand8,466-8,357
K-46SAND8,466-8,357
L-4 Sand8,552-8,443

Perforations

Perforated and open-hole intervals.

FromToType
7,351—Perforated
8,4368,446Perforated
8,5218,525Perforated
8,5588,562Perforated
8,6328,638Perforated
8,6548,664Perforated
8,6998,709Perforated
8,7768,790Perforated
8,8118,816Perforated
8,8308,840Perforated
8,8648,874Perforated
8,8948,906Perforated
8,9568,964Perforated
8,9808,990Perforated
9,0069,012Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6251,12012.25670 S
9.6251,12812.25670 S
8.6251,12812.25670 S
9.6251,12912.25670 S
2.8759,1917.875830 S
2.8759,1927.875830 S
9.625———

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 →

SuffixFiledW-2 / G-1 dateLogs referenced
00Jul 15, 2008Apr 10, 2008—
00Jan 15, 2008Oct 24, 2007—
00Mar 16, 2007Sep 28, 2006—
00Mar 5, 2007Jun 26, 2006—
00Feb 16, 2006Sep 2, 2005—
00Sep 25, 2000Aug 2, 2000—
00Dec 20, 1999Nov 24, 1999Yes
00Dec 17, 1999Nov 18, 1999—
00Sep 14, 1999Jul 26, 1999—
00May 2, 1994Feb 9, 1994—
00Apr 22, 1994Feb 11, 1994Yes
00Feb 25, 1994——
00Aug 8, 1991Jun 13, 1991Yes
00Jun 24, 1991——

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.

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/04731597, documented in the API reference.