TEXAS · WELLS · BRAZOS COUNTY · THOMPSON-MARSH UNIT LEASE · API 42-041-31748 · DISTRICT 03
Thompson-Marsh Unit #1
Brazos County · Giddings (Austin Chalk Gas) field · Horizontal
Thompson-Marsh Unit #1 (API 42-041-31748) is a plugged horizontal well in Brazos County, plugged December 10, 2020, last operated by Magnolia Oil & Gas Operating LLC.
The RRC has issued one drilling permit, issued May 18, 1993, permitted to 11,200 ft.
It was permitted by Union Pacific Resources Company and has since transferred to Magnolia Oil & Gas Operating LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Midway, Navarro, Pecan Gap, Austin Chalk.
Its lease has reported 232K barrels of oil and 2.22M mcf of gas since August 1993, with no volume in the three years through April 2026.
Operator of record
Magnolia Oil & Gas Operating LLC
Permitted by Union Pacific Resources Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 6, 2026
- Permits on file
- 615
- Phone
- (713) 842-9050
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Magnolia Oil & Gas Operating LLC |
| Production reports | Magnolia Oil & Gas Operating LLCthrough Aug 2020 |
| Latest permit | Union Pacific Resources CompanyMay 18, 1993 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,200
- total depth, ft
- 1
- permits on file
- May 18, 1993
- last permit issued
- Aug 19, 1993
- completed
- 232K
- cumulative oil, bbl
- 2.22M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 1993 THROUGH Aug 2020
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 19, 1993
- Shut in
- —
- Plugged
- Dec 10, 2020
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 lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Thompson-Marsh Unit G-3-146625 | Giddings (Austin Chalk, Gas) | Magnolia Oil & Gas Operating LLC | 1 | 232K | 2.22M | Aug 1993 – Aug 2020 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Union Pacific Resources CompanyAug 1993 → Jan 2001
- 2Rme Petroleum CompanyFeb 2001 → Nov 2002
- 3Anadarko E&P Company LPDec 2002 → Jul 2007
- 4Enervest Operating, L.L.C.Aug 2007 → Jun 2018
- 5Magnolia Oil & Gas Operating LLCSep 2018 → Aug 2020
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 411886-99 | Drill | Union Pacific Resources Company | May 18, 1993 | May 18, 1993 | Jul 4, 1993 | 11,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 19, 1993 | Thompson-Marsh Unit G-3-146625 | Giddings (Austin Chalk Gas) | Magnolia Oil & Gas Operating LLC | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 282 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Midway | 6,375 | -6,093 |
| Navarro | 7,680 | -7,398 |
| Pecan Gap | 9,639 | -9,357 |
| Austin Chalk | 10,125 | -9,843 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,430 | 13,385 | Perforated |
| 12,355 | 14,212 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 3,045 | 14.75 | 1,361 S |
| 7.625 | 10,430 | 9.875 | 500 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 →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Oct 11, 1993 | Sep 15, 1993 | Yes |
| 00 | Oct 5, 1993 | — | — |
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 42-041-31748 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-041-31748 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/04131748, documented in the API reference.