WELL · 42-339-00634 · DISTRICT 3
Conroe Field Unit #4
Montgomery County · Conroe field · Vertical
Conroe Field Unit #4 (API 42-339-00634) is a well in Montgomery County operated by Highmark Energy Operating LLC, completed October 2, 1996.
The RRC has issued one drilling permit, issued December 27, 2002, permitted to 3,887 ft.
It was permitted by Exxon Mobil Corporation and has since transferred to Highmark Energy Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Pliocene, Miocene (undifferentiated), Frio.
Its 3 leases have reported 26.7M barrels of oil and 63.7M mcf of gas since January 1993, last reporting in July 2026. The leases carry 666 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Exxon Mobil Corporation; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Dec 4, 2025 · 23 permits on file · (903) 876-2591
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Highmark Energy Operating LLC |
| Production reports | Highmark Energy Operating, LLCthrough Apr 2026 |
| Latest permit | Exxon Mobil CorporationDec 27, 2002 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,887
- total depth, ft
- 1
- permits on file
- Dec 27, 2002
- last permit issued
- Oct 2, 1996
- completed
- 26.7M
- cumulative oil, bbl
- 63.7M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 2, 1996
- Shut in
- —
- Plugged
- —
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 666 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Dobbins, C. L. G-3-197853 | Conroe (Cons. U) | Highmark Energy Operating, LLC | 1 | 0 | 6.11K | Apr 2003 – Jul 2026 |
| Conroe Field Unit O-3-11659 | Conroe | Highmark Energy Operating, LLC | 664 | 26.7M | 61.4M | Jan 1993 – Jul 2026 |
| Conroe Field Unit G-3-165933 | Conroe | Exxon Mobil Corporation | 1 | 0 | 2.37M | Nov 1997 – Apr 2003 |
Oil, barrels lease total
Last 12 months 528,577 · prior 12 506,957(+4%)
Gas, mcf lease total
Last 12 months 174,487 · prior 12 323,330(-46%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Exxon Corp.Jan 1993 → Mar 2000
- 2Exxon Mobil CorporationApr 2000 → Aug 2006
- 3Wapiti Operating, LLCSep 2006 → Dec 2009
- 4Denbury Onshore, LLCJan 2010 → Oct 2024
- 5Highmark Energy Operating, LLCNov 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 526660-99 | Recompletion | Exxon Mobil Corporation | Dec 23, 2002 | Dec 27, 2002 | Mar 28, 2003 | 3,887 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-165933 | — | — | — | — |
| — | — G-3-197853 | — | — | — | — |
| — | — O-3-11659 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 150 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Pliocene | 457 | -307 |
| Miocene (undifferentiated)MIOCENE | 1,988 | -1,838 |
| Frio | 2,911 | -2,761 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,912 | 2,915 | Perforated |
| 4,654 | 4,662 | Perforated |
| 4,814 | 4,824 | Perforated |
| 4,950 | 4,956 | Perforated |
| 4,968 | 4,974 | Perforated |
| 5,042 | 5,047 | Perforated |
| 5,051 | 5,057 | Perforated |
| 5,061 | 5,067 | Perforated |
| 5,076 | 5,080 | Perforated |
| — | 5,200 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 987 | 14 | 150 S |
| 10.75 | 987 | — | — |
| 7 | 5,014 | 9.875 | 340 S |
| 7 | 5,014 | — | — |
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 →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Dec 17, 2003 | Jul 24, 2003 | — |
| 00 | Dec 8, 2003 | — | — |
| 00 | Sep 13, 2000 | Jul 19, 2000 | — |
| 00 | Jan 28, 1998 | Dec 29, 1997 | — |
| 00 | Jan 15, 1998 | — | — |
| 00 | Jan 23, 1997 | Dec 9, 1996 | — |
| 00 | Dec 5, 1996 | Nov 19, 1996 | — |
| 00 | Dec 4, 1990 | Nov 9, 1990 | — |
| 00 | Jun 27, 1985 | Jun 4, 1985 | — |
| 00 | Apr 25, 1985 | Apr 1, 1985 | — |
| 00 | Jan 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.
- Wellbore filings for 42-339-00634 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-339-00634 → scanned completion filings
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/33900634, documented in the API reference.