WELL · 42-339-30964 · DISTRICT 3

Keystone Mills Co. #45

Shut in

Montgomery County · Conroe (Middle Wilcox Cons.) field · Temp Abandoned  · Vertical

Keystone Mills CO. #45 (API 42-339-30964) is a permitted well in Montgomery County filed by Exxon Mobil Corporation; no completion report is on file yet.

The RRC has issued 3 drilling permits (amended twice) between 1999 and 2003, permitted to 13,194 ft.

It was permitted by Exxon Mobil Corporation and has since transferred to Highmark Energy Operating LLC on the wellbore schedule.

Completion filings report 7 formation tops, including Vicksburg, Jackson, Upper Cockfield, Cook Mountain.

Its 4 leases have reported 592 barrels of oil and 562K mcf of gas since June 1999, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.

Operator of record

Highmark Energy Operating LLC

Permitted by Exxon Mobil Corporation; 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 scheduleExxon Mobil Corporation
Production reportsDenbury Onshore, LLCthrough Oct 2024
Latest permitExxon Mobil CorporationJan 30, 2003

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

13,194
total depth, ft
5
permits on file
Jan 30, 2003
last permit issued
—
completed
592
cumulative oil, bbl
562K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jun 1999 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
—
Shut in
Nov 1, 2024
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 4 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Keystone Mills Co. G-3-203245Conroe (Middle Wilcox Cons.)Highmark Energy Operating, LLC10110KAug 2004 – Jul 2026
Keystone Mills Co. O-3-24431Conroe (Middle Wilcox Cons.)Exxon Mobil Corporation159222.2KAug 2003 – Sep 2004
Keystone Mills Co. G-3-176201Conroe, S. (Wilcox 10,000)Exxon Mobil Corporation10353KNov 1999 – Dec 2003
Keystone Mills Co. G-3-174460Conroe, S. (Wilcox 25-10,300)Exxon Corp.1076.8KJun 1999 – Nov 1999

Gas, mcf lease total

Last 12 months 0 · prior 12 688(-100%)

01K2K202420252026

Chain of custody

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

  1. 1Exxon Corp.Jun 1999 → Mar 2000
  2. 2Exxon Mobil CorporationApr 2000 → Jun 2006
  3. 3Wapiti Operating, LLCMar 2007 → Oct 2009
  4. 4Denbury Onshore, LLCOct 2014 → Oct 2024

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
527856-99RecompletionExxon Mobil CorporationJan 29, 2003Jan 30, 2003Apr 21, 200312,500
486015-97RecompletionExxon Corp.Nov 16, 1999Jul 20, 1999Aug 25, 199913,094
486015-98RecompletionExxon Corp.Sep 7, 1999Jul 20, 1999—13,094
486015-99RecompletionExxon Corp.Jul 20, 1999Jul 20, 1999—13,094
482008-99DrillExxon Corp.Jan 12, 1999Jan 13, 1999Mar 4, 199913,400

Completions

CompletedLeaseFieldOperatorStatusDepth
—Keystone Mills Co. G-3-203245Conroe (Middle Wilcox Cons.)Highmark Energy Operating LLCTemp Abandoned · shut in Nov 1, 202413,194
Aug 27, 2003Keystone Mills Co. O-3-24431Conroe (Middle Wilcox Cons.)Exxon Mobil CorporationNot on Schedule—
Aug 27, 2003Keystone Mills Co. O-3-24431Conroe (Middle Wilcox Cons.)Exxon Mobil CorporationNot on Schedule—
Nov 19, 1999Keystone Mills Co. G-3-176201Conroe (Middle Wilcox Cons.)Exxon Mobil CorporationNot on Schedule—
Jun 9, 1999Keystone Mills Co. G-3-174460Conroe S. (Wilcox 25-10 300)Exxon Mobil CorporationNot on Schedule—

Formation tops

As filed on W-2/G-1. Subsea from 180 ft elevation.Download CSV →

FormationMD ftSubsea
VicksburgTOP VICKSBURG3,545-3,365
JacksonTOP JACKSON3,862-3,682
Upper Cockfield4,850-4,670
Cook Mountain6,175-5,995
Topwilcox7,901-7,721
Wilcox7,901-7,721
WilcoxWILCOX 2310,491-10,311
WilcoxWILCOX 2710,837-10,657
WILCOX2710,837-10,657

Perforations

Perforated and open-hole intervals.

FromToType
10,02110,028Perforated
10,03110,038Perforated
10,50310,509Perforated
10,84810,872Perforated
12,34812,358Perforated
12,44212,454Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
13.3751,59617.51,365 S
5.58,812—530 S
9.6259,39712.252,820 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
00Nov 3, 2004Aug 25, 2004—
00Sep 10, 2004——
00Jan 12, 2004Oct 7, 2003Yes
00Oct 29, 2003——
00Apr 28, 2000Dec 14, 1999—
00Mar 28, 2000——
00Oct 21, 1999Jul 19, 1999Yes
00Oct 14, 1999——

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/33930964, documented in the API reference.