TEXAS · WELLS · ANDREWS COUNTY · WILDCAT LEASE · API 42-003-42333 · DISTRICT 7B

Wildcat #4004

Shut in

Andrews County · Spraberry (Trend Area) field · Shut In  · Vertical

Wildcat #4004 (API 42-003-42333) is a well in Andrews County operated by Cog Operating LLC, completed April 16, 2011 and listed as shut in on the RRC schedule, shut in May 1, 2020.

The RRC has issued one drilling permit, issued December 16, 2010, permitted to 11,783 ft.

It was permitted by High Sky Partners LLC and has since transferred to Cog Operating LLC on the wellbore schedule.

Completion filings report 6 formation tops, including Grayburg, Clear Fork, Spraberry, Wolfcamp.

Its lease has reported 163K barrels of oil and 531K mcf of gas since July 2010, with no volume in the three years through April 2026. The lease carries 4 wells, so these are lease totals, not this well alone.

Operator of record

COG Operating LLC

Permitted by High Sky Partners LLC; the EWA schedule now lists a different operator.

Based in
Midland, TX
P-5 status
Active – Extension (X)
P-5 last filed
Jun 2, 2026
Permits on file
4,568
Phone
(432) 683-7443

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleCOG Operating LLC
Production reportsCOG Operating LLCthrough Feb 2020
Latest permitHigh Sky Partners LLCDec 16, 2010

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

11,783
total depth, ft
1
permits on file
Dec 16, 2010
last permit issued
Apr 16, 2011
completed
163K
cumulative oil, bbl
531K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Aug 2010 THROUGH Feb 2020

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Apr 16, 2011
Shut in
May 1, 2020
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 4 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Wildcat O-10-40296Spraberry (Trend Area)COG Operating LLC4163K531KJul 2010 – Feb 2020

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. 1High Sky Partners LLCAug 2010 → May 2011
  2. 2OXY USA Inc.Jun 2011 → Jul 2017
  3. 3COG Operating LLCAug 2017 → Feb 2020

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
706151-99DrillHigh Sky Partners LLCDec 1, 2010Dec 16, 2010Feb 14, 201111,900

Completions

CompletedLeaseFieldOperatorStatusDepth
Apr 16, 2011Wildcat O-10-40296Spraberry (Trend Area)COG Operating LLCShut In · shut in May 1, 202011,783

Formation tops

As filed on W-2/G-1. Subsea from 2,945 ft elevation.Download CSV →

FormationMD ftSubsea
Grayburg4,741-1,796
Clear ForkCLEARFORK6,952-4,007
SpraberryUPPER SPRABERRY8,355-5,410
WolfcampWOLFCAMP SHALE9,676-6,731
Strawn10,814-7,869
Atoka11,014-8,069

Perforations

Perforated and open-hole intervals.

FromToType
7,27811,271Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
13.3751,75417.51,400 S
8.6255,71011900 S
5.511,7837.8751,500 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →

SuffixRRC record dateW-2 / G-1 dateLogs referenced
00May 16, 2012May 5, 2011Yes

Well logs

2 logs loaded from the RRC's log index, the latest received Feb 4, 2014. Cased hole, Neutron. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.

Open the RRC's log search for this well ↗
Logas describedFiles Intervalft, as filedDatereceivedSizeMB
NEUTRON POROSITYSpans Grayburg, Clear Fork, Spraberry, Wolfcamp, Strawn, AtokaTIFF5,100 to 11,740Feb 4, 2014run Mar 16, 20115.81
SURVEYS CASED HOLESpans Grayburg, Clear Fork, Spraberry, Wolfcamp, Strawn, AtokaTIFF5,800 to 11,740Sep 3, 2013run Mar 16, 20116.28

"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.

Find logs withinmiles of this well:List →Map →

Search the well logs loaded into Petrora →

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.

The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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/00342333, documented in the API reference.