WELL · 42-477-30747 · DISTRICT 3
McMahan Unit #1
Washington County · Giddings (Austin Chalk-3) field · NO Production · Horizontal
Mcmahan Unit #1 (API 42-477-30747) is a horizontal well in Washington County operated by Magnolia Oil & Gas Operating LLC, completed March 4, 1995 and listed as no production on the RRC schedule.
The RRC has issued one drilling permit, issued July 21, 1994, permitted to 11,300 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 2 formation tops, including Austin Chalk, N/A.
Its lease has reported 204K barrels of oil and 1.55M mcf of gas since March 1995, last reporting in July 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 Mar 2026 |
| Latest permit | Union Pacific Resources CompanyJul 21, 1994 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,300
- total depth, ft
- 1
- permits on file
- Jul 21, 1994
- last permit issued
- Mar 4, 1995
- completed
- 204K
- cumulative oil, bbl
- 1.55M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 1995 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 4, 1995
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 |
|---|---|---|---|---|---|---|
| McMahan Unit O-3-22716 | Giddings (Austin Chalk-3) | Magnolia Oil & Gas Operating LLC | 1 | 204K | 1.55M | Mar 1995 – Jul 2026 |
Oil, barrels lease total
Last 12 months 38 · prior 12 0
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Union Pacific Resources CompanyApr 1995 → Jan 2001
- 2Rme Petroleum CompanyFeb 2001 → Nov 2002
- 3Anadarko E&P Company LPDec 2002 → Jul 2007
- 4Enervest Operating, L.L.C.Aug 2007 → Jul 2018
- 5Magnolia Oil & Gas Operating LLCAug 2018 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 426052-99 | Drill | Union Pacific Resources Company | Jul 20, 1994 | Jul 21, 1994 | Feb 5, 1995 | 11,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-22716 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 331 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 10,489 | -10,158 |
| N/A | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,510 | 13,640 | Perforated |
| 10,510 | 15,155 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 3,455 | 14.75 | 1,355 S |
| 7.625 | 10,510 | 9.875 | 300 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 →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Feb 5, 2018 | Jun 27, 2017 | — |
| 00 | Jul 3, 1995 | May 25, 1995 | Yes |
| 00 | Jun 19, 1995 | — | — |
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 42-477-30747 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-477-30747 → 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/47730747, documented in the API reference.