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TEXAS · WELLS · STONEWALL COUNTY · API 42-433-00421 · DISTRICT 6E

Katz (Strawn) Unit #10

Y

Stonewall County · Katz (Strawn) field · Producing  · Vertical

Permitted field
Katz (5100)

Katz (Strawn) Unit #10 (API 42-433-00421) is a well in Stonewall County operated by Atlas Operating LLC, completed December 11, 2010 and listed as producing on the RRC schedule.

The RRC has issued 2 drilling permits between 1987 and 1989, permitted to 5,127 ft.

It was permitted by Phillips Petroleum Company and has since transferred to Atlas Operating LLC on the wellbore schedule.

Completion filings report 4 formation tops, including Valera, Coleman Junction, Strawn, Palo Pinto.

Its 3 leases have reported 15.3M barrels of oil and 30.4M mcf of gas since January 1993, last reporting volume in March 2026. The leases carry 319 wells, so these are lease totals, not this well alone.

Operator of record

Atlas Operating LLC

Permitted by Phillips Petroleum Company; the EWA schedule now lists a different operator.

Based in
Houston, TX
P-5 status
Active – Hearing (H)
P-5 last filed
Mar 9, 2026
Permits on file
78
Phone
(281) 893-9400
Create operator alert

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleAtlas Operating LLC
Production reportsAtlas Operating LLCthrough Mar 2026
Latest permitPhillips Petroleum CompanyMar 24, 1989

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

5,127
total depth, ft
2
permits on file
Mar 24, 1989
last permit issued
Dec 11, 2010
completed
15.3M
cumulative oil, bbl
30.4M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Mar 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Dec 11, 2010
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 3 leases this well is completed on; they carry 319 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Katz (Strawn) Unit O-8-30524Katz (Strawn)Atlas Operating LLC24513.1M30.2MMay 2010 – Mar 2026
C.B. Long Unit O-8-30422Katz (Strawn)Kinder Morgan Production Co LLC3515.6K3.16KNov 2009 – Apr 2010
C.B. Long Unit O-8-25595Katz (5100)Kinder Morgan Production Co LLC392.14M242KJan 1993 – Oct 2009

Oil, barrels lease total

Last 12 months 265,670 · prior 12 333,294(-20%)

020K40K202420252026

Gas, mcf lease total

Last 12 months 948,880 · prior 12 1,027,778(-8%)

050K100K150K202420252026

Chain of custody

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

  1. 1Phillips Petroleum CompanyJan 1993 → Jan 1998
  2. 2Merit Energy CompanyFeb 1998 → Aug 2000
  3. 3Journey Operating, L.L.C.Sep 2000 → Feb 2006
  4. 4Kinder Morgan Production Co LPMar 2006 → Jul 2007
  5. 5Kinder Morgan Production Co LLCAug 2007 → May 2024
  6. 6Atlas Operating LLCJun 2024 → Mar 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
357314-99RecompletionPhillips Petroleum CompanyMar 22, 1989Mar 24, 1989—5,250
330323-99RecompletionPhillips Petroleum CompanyMay 15, 1987May 19, 1987—5,200

Completions

CompletedLeaseFieldOperatorStatusDepth
Dec 11, 2010Katz (Strawn) Unit O-8-30524Katz (Strawn)Atlas Operating LLCProducing5,127
Oct 19, 1994C.B. Long Unit O-8-30422Katz (Strawn)Kinder Morgan Production Co LLCNot on Schedule—
Oct 19, 1994C.B. Long Unit O-8-25595Katz (5100)Kinder Morgan Production Co LLCNot on Schedule—
—Long C.B. -C- O-8-4328KatzPhillips Petroleum CompanyNot on Schedule—

Formation tops

As filed on W-2/G-1. Subsea from 1,456 ft elevation.Download CSV →

FormationMD ftSubsea
Valera1,549-93
Coleman Junction2,059-603
Strawn1ST STRAWN4,862-3,406
Palo Pinto4,905-3,449
Strawn2ND STRAWN4,914-3,458
Strawn3RD STRAWN4,971-3,515

Perforations

Perforated and open-hole intervals.

FromToType
4,8564,861Perforated
4,8624,872Perforated
4,8624,890Perforated
4,8624,892Perforated
4,8644,872Perforated
4,8725,127Open hole
4,9024,913Perforated
4,9144,928Perforated
4,9294,931Perforated
4,9324,940Perforated
4,9714,994Perforated
4,9715,010Perforated
5,0835,093Perforated
5,0965,120Perforated
5,1005,120Perforated
—4,862Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
10.7521713.75150 S
10.75217—150 S
74,8948.75200 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
00Apr 2, 2015Mar 18, 2015—
00Sep 3, 2013Aug 29, 2013—
00Nov 30, 2011Jul 7, 2011—
00May 21, 2010Feb 13, 1995—
00Nov 25, 2009Feb 13, 1995—
00Mar 7, 1995Feb 13, 1995—
00Dec 7, 1992Nov 2, 1992—
00Apr 12, 1991Mar 14, 1991Yes
00May 8, 1990Jan 19, 1990—
00Dec 28, 1989——
00Nov 23, 1989——
00Jan 12, 1984——

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 filed since 2004 open from the RRC's log search for this well; none are loaded here for it.

Find logs withinmiles of this well:List →Map →

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/43300421, documented in the API reference.