TEXAS · WELLS · LIPSCOMB COUNTY · COOPER 357 LEASE · API 42-295-33389 · DISTRICT 08

Cooper 357 #2H

Y

Lipscomb County · Lipscomb (Atoka) field · Producing  · Horizontal

Cooper 357 #2H (API 42-295-33389) is a horizontal well in Lipscomb County operated by Highmark Energy Operating LLC, completed December 17, 2008 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit (amended once), issued August 11, 2008, permitted to 9,765 ft.

It was permitted by Eog Resources, Inc. and has since transferred to Highmark Energy Operating LLC on the wellbore schedule.

Completion filings report 2 formation tops, including Redfork, Atoka.

Its lease has reported 602 barrels of oil and 1.36M mcf of gas since December 2008, last reporting volume in April 2026.

Operator of record

Highmark Energy Operating LLC

Permitted by EOG Resources, Inc.; the EWA schedule now lists a different operator.

Based in
Houston, TX
P-5 status
Active (A)
P-5 last filed
Mar 9, 2026
Permits on file
23
Phone
(469) 214-5299

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleHighmark Energy Operating LLC
Production reportsHighmark Energy Operating, LLCthrough Apr 2026
Latest permitEOG Resources, Inc.Aug 11, 2008

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

9,765
total depth, ft
2
permits on file
Aug 11, 2008
last permit issued
Dec 17, 2008
completed
602
cumulative oil, bbl
1.36M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Dec 2008 THROUGH Apr 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Dec 17, 2008
Shut in
—
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; this well is the only one on it.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Cooper 357 G-14-246525Lipscomb (Atoka)Highmark Energy Operating, LLC16021.36MDec 2008 – Apr 2026

Gas, mcf lease total

Last 12 months 13,818 · prior 12 26,914(-49%)

02K4K202420252026

Chain of custody

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

  1. 1EOG Resources, Inc.Dec 2008 → Jan 2022
  2. 2Highmark Energy Operating, LLCFeb 2022 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
667533-98DrillEOG Resources, Inc.Sep 25, 2008Aug 11, 2008Sep 11, 200810,500
667533-99DrillEOG Resources, Inc.Jul 25, 2008Aug 11, 2008Sep 11, 200810,500

Completions

CompletedLeaseFieldOperatorStatusDepth
Dec 17, 2008Cooper 357 G-14-246525Lipscomb (Atoka)Highmark Energy Operating LLCProducing9,765

Formation tops

As filed on W-2/G-1. Subsea from 2,467 ft elevation.Download CSV →

FormationMD ftSubsea
Redfork9,679-7,212
AtokaUPPER ATOKA9,801-7,334

Perforations

Perforated and open-hole intervals.

FromToType
10,06911,401Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6251,80612.25760 S
710,0438.75150 S
4.511,5126.25—

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 19, 2009Jan 20, 2009Yes
00Apr 23, 2009——

Well logs

2 logs loaded from the RRC's log index, the latest received Nov 7, 2011. Density, Neutron, Resistivity. 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/DENSITY POROSITYSpans Redfork, AtokaTIFF5,500 to 10,046Nov 7, 2011run Sep 22, 200810.3
RESISTIVITYSpans Redfork, AtokaTIFF1,807 to 10,056Nov 7, 2011run Sep 22, 200815.1

"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.

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/29533389, documented in the API reference.