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TEXAS · WELLS · MONTGOMERY COUNTY · API 42-339-30456 · DISTRICT 03

Conroe Field Unit #3529

Shut in

Montgomery County · Conroe field · Temp Abandoned  · Directional

Permitted field
Conroe ( Cockfield Upper)

Conroe Field Unit #3529 (API 42-339-30456) is a well in Montgomery County operated by Highmark Energy Operating LLC, completed August 16, 1990 and listed as temp abandoned on the RRC schedule, shut in February 1, 1999.

The RRC has issued 2 drilling permits between 1979 and 1990, permitted to 5,272 ft.

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

Completion filings report 3 formation tops, including Frio, Vicksburg, Jackson.

Its 2 leases have reported 26.8M barrels of oil and 61.5M mcf of gas since the record begins in January 1993, last reporting volume in August 2026. The leases carry 665 wells, so these are lease totals, not this well alone.

Operator of record

Highmark Energy Operating LLC

Permitted by Exxon Corp.; 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
Create operator alert

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleHighmark Energy Operating LLC
Production reportsHighmark Energy Operating, LLCthrough Aug 2026
Latest permitExxon Corp.Jun 22, 1990

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

5,272
total depth, ft
2
permits on file
Jun 22, 1990
last permit issued
Aug 16, 1990
completed
26.8M
cumulative oil, bbl
61.5M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · ON RECORD FROM JAN 1993, THE RECORD'S FIRST MONTH, THROUGH AUG 2026

On this page4 formation topsLease production4 completionsInjection volumes

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Aug 16, 1990
Shut in
Feb 1, 1999
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.

Wells nearby

Every well with a location on file around this well, in any state, nearest first.

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Texas locations come from drilling permits, so most older Texas wells have none and are not listed.

Lease production

PDQ LEASE REPORTS · REPORTED THROUGH AUG 2026

Texas reports oil by lease, not by well. These are the 2 leases this well is completed on; they carry 665 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Conroe Field Unit O-3-11659ConroeHighmark Energy Operating, LLC66426.8M61.4Mby Jan 1993 – Aug 2026
Conroe Field Unit G-3-168135ConroeHighmark Energy Operating, LLC1063.3KMay 1998 – Nov 2004

Oil, barrels lease total

Last 12 months 508,890 · prior 12 549,543(-7%)

020K40K60K202420252026

Gas, mcf lease total

Last 12 months 170,976 · prior 12 244,158(-30%)

050K100K202420252026

Wells named Conroe Field Unit

Highmark Energy Operating LLC's other wells filed under this lease name in Montgomery County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.

Loading the lease's wells

Chain of custody

Operator on the lease's P-4

Each operator named on the P-4 filings for this well's lease (a gas well is its own lease), from the date its filing took effect. The P-4 is filed by lease, so a date before the well was drilled is the lease's.

OperatorFromTo
Highmark Energy Operating, LLCNov 1, 2024today
Denbury Onshore, LLCJan 1, 2010Nov 1, 2024
Wapiti Operating, LLCSep 1, 2006Jan 1, 2010
Exxon Mobil CorporationApr 1, 2000Sep 1, 2006
Exxon Corp.Jun 2, 1998Apr 1, 2000

Reporting production

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

  1. 1Exxon Corp.Jan 1993 → Mar 2000
  2. 2Exxon Mobil CorporationApr 2000 → Aug 2006
  3. 3Wapiti Operating, LLCSep 2006 → Dec 2009
  4. 4Denbury Onshore, LLCJan 2010 → Oct 2024
  5. 5Highmark Energy Operating, LLCNov 2024 → Aug 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
374771-99RecompletionExxon Corp.Jun 22, 1990Jun 22, 1990—5,272
59977-99DrillExxon Corp.Sep 25, 1979Sep 25, 1979Nov 9, 19795,700

Completions

CompletedLeaseFieldOperatorStatusDepth
Aug 16, 1990Conroe Field Unit G-3-168135ConroeHighmark Energy Operating LLCTemp Abandoned · shut in Feb 1, 19995,272
Aug 16, 1990Conroe Field Unit O-3-11659ConroeHighmark Energy Operating LLCNot on Schedule—
Dec 15, 1988Conroe Field Unit O-3-11659ConroeHighmark Energy Operating LLCNot on Schedule—
Feb 7, 1980Conroe Field Unit G-3-88985ConroeExxon Corp.Not on Schedule—

Formation tops

As filed on W-2/G-1. Subsea from 238 ft elevation.Download CSV →

FormationMD ftSubsea
Frio2,805-2,567
FrioTOP OF FRIO2,805-2,567
Vicksburg3,587-3,349
Jackson3,890-3,652

Perforations

Perforated and open-hole intervals.

FromToType
4,8444,860Perforated
5,0385,047Perforated
5,0605,064Perforated
5,1195,124Perforated
5,1285,134Perforated
5,2125,222Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
1631520850 S
10.751,02414.75775 S
72,5429.875950 S
2.8754,034——
2.8754,037——
75,2729.8751,300 S
7—9.875950 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
00Jun 17, 1998May 28, 1998—
00Jun 2, 1998——
00Oct 30, 1990Sep 4, 1990—
00Sep 15, 1990Jan 9, 1989—
00Jan 25, 1989Jan 9, 1989—
00Jun 26, 1986Jun 13, 1986—
00Jul 2, 1984May 30, 1984—
00Jan 12, 1984May 30, 1984—
00Jan 12, 1984Jul 23, 1980—

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 →

Beyond the permit record

RRC UIC permits · H-10 reported volumes

Injection

0
bbl, last 12 reported months
1.94M
bbl, all reported
Mar 1998
reported through
UICKindStatusPermitted bbl/dMax psiZone ft
000072664H-1 InjectionCanceled Jun 30, 199802,0004,700–5,272

MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS

Last 12 months 0 · prior 12 0

0119971998

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/33930456, documented in the API reference.