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TEXAS · WELLS · MONTGOMERY COUNTY · CONROE FIELD UNIT LEASE · API 42-339-30778 · DISTRICT 03

Conroe Field Unit #1955

On schedule

Montgomery County · Conroe field · Producing  · Vertical

Fields on the latest permit · any of 2
Conroe · Conroe ( Cockfield Upper)
Not one formation; the well must be completed in one of them, and no target formation is stated.

Conroe Field Unit #1955 (API 42-339-30778) is a well in Montgomery County operated by Highmark Energy Operating LLC, completed May 9, 2017 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued July 20, 1987, permitted to 5,200 ft.

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

Completion filings report 12 formation tops, including Moody'S Branch, First Upper Cockfield, Second Upper Cockfield, 1 M.

Its lease has reported 26.8M barrels of oil and 61.4M mcf of gas since the record begins in January 1993, last reporting volume in August 2026. The lease carries 664 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.Jul 20, 1987

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

5,200
total depth, ft
1
permits on file
Jul 20, 1987
last permit issued
May 9, 2017
completed
26.8M
cumulative oil, bbl
61.4M
cumulative gas, mcf

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

On this page13 formation topsLease production

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
May 9, 2017
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.

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 lease this well is completed on; they carry 664 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

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.Oct 1, 1978Apr 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
333121-99DrillExxon Corp.Jul 20, 1987Jul 20, 1987—5,200

Completions

CompletedLeaseFieldOperatorStatusDepth
May 9, 2017Conroe Field Unit O-3-11659ConroeHighmark Energy Operating LLCProducing5,200

Formation tops

As filed on W-2/G-1. Subsea from 171 ft elevation.Download CSV →

FormationMD ftSubsea
Moody's Branch4,736-4,565
First Upper Cockfield4,783-4,612
Second Upper Cockfield4,820-4,649
1 M4,965-4,794
1M4,965-4,794
2 A5,011-4,840
2A5,011-4,840
2 B1, 25,030-4,859
2B1,25,030-4,859
2B125,030-4,859
2BL, 25,030-4,859
2BL,25,030-4,859
2A6,011-5,840

Perforations

Perforated and open-hole intervals.

FromToType
4,9654,969Perforated
5,0105,016Perforated
5,0115,017Perforated
5,0305,035Perforated
5,0755,080Perforated
5,0995,104Perforated
5,1125,117Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
1690——
9.6251,62312.25557 S
9.6251,62412.25557 S
5.55,1837.875590 S
5.55,1838.75590 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 30, 2017May 19, 2017—
00Mar 21, 2017Feb 20, 2017—
00Oct 27, 2014Sep 23, 2014—
00Dec 8, 1995Nov 8, 1995—
00Jun 30, 1989Jun 6, 1989—
00Jun 7, 1989May 16, 1989—
00Dec 28, 1988Dec 9, 1988—
00Nov 1, 1988Oct 10, 1988—
00Sep 23, 1987Sep 11, 1987Yes
00Sep 22, 1987——

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.

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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

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