WELL · 42-317-39048 · DISTRICT 8

Mabee 239 #301WB

N

Martin County · Spraberry (Trend Area) field  · Horizontal

Mabee 239 #301WB (API 42-317-39048) is a horizontal well in Martin County operated by Cog Operating LLC, completed April 29, 2014.

The RRC has issued one drilling permit (amended once), issued November 15, 2013, permitted to 10,400 ft.

Completion filings report 11 formation tops, including Santa Rosa, Yates, Queen, Grayburg.

Its 2 leases have reported 3.85M barrels of oil and 9.01M mcf of gas since February 2010, last reporting in July 2026. The leases carry 44 wells, so these are lease totals, not this well alone.

Operator of record

COG Operating LLC

Midland, TX · P-5 Y, filed May 4, 2026 · 4,568 permits on file · (432) 853-2355

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleCOG Operating LLC
Production reportsCOG Operating LLCthrough Apr 2026
Latest permitReliance Energy, Inc.Nov 15, 2013

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

10,400
total depth, ft
2
permits on file
Nov 15, 2013
last permit issued
Apr 29, 2014
completed
3.85M
cumulative oil, bbl
9.01M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Feb 2010 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
Apr 29, 2014
Shut in
—
Plugged
—

Surface location

32.243214, -102.167236

OpenStreetMap → ·  Google Maps →

Permit surface location from the RRC GIS record, in Martin County.

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 44 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Mabee 239 O-10-40493Spraberry (Trend Area)COG Operating LLC433.84M9MFeb 2010 – Jul 2026
Mabee 239 X2 O-10-63772Spraberry (Trend Area)COG Operating LLC19.28K12KJun 2025 – Jul 2026

Oil, barrels lease total

Last 12 months 55,234 · prior 12 118,315(-53%)

05K10K15K202420252026

Gas, mcf lease total

Last 12 months 94,672 · prior 12 345,229(-73%)

020K40K60K202420252026

Chain of custody

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

  1. 1Reliance Energy, Inc.Mar 2010 → Sep 2016
  2. 2COG Operating LLCOct 2016 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
773240-98DrillCOG Operating LLCMay 20, 2025Nov 15, 2013Feb 22, 201410,400
773240-99DrillReliance Energy, Inc.Nov 6, 2013Nov 15, 2013Feb 22, 201410,400

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-10-40493————
—— O-10-63772————

Formation tops

As filed on W-2/G-1. Subsea from 2,863 ft elevation.Download CSV →

FormationMD ftSubsea
Santa Rosa1,3401,523
Santa Rosa1,3411,522
Yates2,894-31
Queen3,973-1,110
Grayburg4,645-1,782
San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H4,883-2,020
Clear ForkCLEARFORK6,793-3,930
Spraberry8,223-5,360
Dean9,511-6,648
Wolfcamp9,698-6,835
Cisco——
Pennsylvanian——

Perforations

Perforated and open-hole intervals.

FromToType
10,09916,033Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
13.3751,89517.51,650 S
9.6259,51512.251,510 S
5.516,1278.52,575 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 →

SuffixFiledW-2 / G-1 dateLogs referenced
00Sep 15, 2025May 14, 2025—
00Sep 11, 2025Dec 19, 2014Yes
00Apr 21, 2015Dec 19, 2014Yes

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) and the University Lands library. then paste it into their search.

Nearby wells and their tops

NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM

Draw a cross-section

This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.

Open the cross-section →

Mabee 239 X642-317-39043

0.2 KM · Reliance Energy, Inc. · Section with this well →

Santa Rosa1,3751,491
Yates2,892-26
Queen3,959-1,093
Grayburg4,711-1,845
San Andres4,931-2,065
Spraberry8,238-5,372
Dean9,526-6,660
Wolfcamp9,699-6,833

16 TOPS · FIRST 8

Mabee 239 X542-317-39459

0.7 KM · Reliance Energy, Inc. · Section with this well →

Santa Rosa1,3441,526
Yates2,931-61
Queen4,023-1,153
Grayburg4,680-1,810
San Andres4,985-2,115
Spraberry8,244-5,374
Dean9,534-6,664
Wolfcamp9,725-6,855

11 TOPS · FIRST 8

Mabee Dda E1342-317-46951

0.9 KM · COG Operating LLC · Section with this well →

Santa Rosa1,2751,604
Yates2,952-73
Queen3,681-802
Grayburg4,217-1,338
San Andres4,723-1,844
Spraberry8,286-5,407
Cisco—
Wolfcamp—

10 TOPS · FIRST 8

Mabee Dda E1342-317-46950

0.9 KM · COG Operating LLC · Section with this well →

Santa Rosa1,2751,604
Yates2,954-75
Queen3,700-821
Grayburg4,251-1,372
San Andres4,761-1,882
Clear Fork6,884-4,005
Spraberry8,322-5,443
Spraberry8,592-5,713

10 TOPS · FIRST 8

Mabee Dda E1242-317-46949

0.9 KM · COG Operating LLC · Section with this well →

Santa Rosa1,3081,571
Yates2,927-48
Queen3,716-837
Grayburg4,200-1,321
San Andres4,612-1,733
Clear Fork6,840-3,961
Spraberry8,290-5,411
Spraberry8,613-5,734

10 TOPS · FIRST 8

Mabee Dda E1542-317-46953

0.9 KM · COG Operating LLC · Section with this well →

Santa Rosa1,2761,603
Yates2,951-72
Queen3,672-793
Grayburg4,203-1,324
San Andres4,706-1,827
Spraberry8,270-5,391
Dean—
Cisco—

10 TOPS · FIRST 8

Mabee Dda E1542-317-46952

0.9 KM · COG Operating LLC · Section with this well →

Santa Rosa1,2751,604
Yates2,947-68
Queen3,665-786
Grayburg4,195-1,316
San Andres4,696-1,817
Clear Fork6,812-3,933
Spraberry8,254-5,375
Spraberry8,524-5,645

10 TOPS · FIRST 8

Mabee Dda E1742-317-46954

0.9 KM · COG Operating LLC · Section with this well →

Santa Rosa1,2761,603
Yates2,952-73
Queen3,681-802
Grayburg4,219-1,340
San Andres4,727-1,848
Clear Fork6,871-3,992
Spraberry8,314-5,435
Spraberry8,585-5,706

10 TOPS · FIRST 8

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/31739048, documented in the API reference.