TEXAS · WELLS · MCMULLEN COUNTY · MARTIN MASON LEASE · API 42-311-34586 · DISTRICT 01
Martin Mason #J 1H
McMullen County · Eagleville (Eagle Ford-1) field · Shut In · Horizontal
Martin Mason #J 1H (API 42-311-34586) is a horizontal well in Mcmullen County operated by Ineos USA Oil & Gas LLC, completed January 22, 2012 and listed as shut in on the RRC schedule, shut in June 1, 2026.
The RRC has issued one drilling permit (amended once), issued June 29, 2011, permitted to 9,575 ft.
It was permitted by Chesapeake Operating, Inc. and has since transferred to Ineos USA Oil & Gas LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Anacacho, Austin Chalk, Eagle Ford.
Its lease has reported 489K barrels of oil and 315K mcf of gas since December 2010, last reporting in July 2026. The lease carries 5 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Chesapeake Operating, Inc.; the EWA schedule now lists a different operator.
- Based in
- Denver, CO
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 26, 2026
- Permits on file
- 98
- Phone
- (720) 764-3473
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ineos USA Oil & Gas LLC |
| Production reports | Ineos USA Oil & Gas LLCthrough Apr 2026 |
| Latest permit | Chesapeake Operating, Inc.Jun 29, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,575
- total depth, ft
- 2
- permits on file
- Jun 29, 2011
- last permit issued
- Jan 22, 2012
- completed
- 489K
- cumulative oil, bbl
- 315K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2010 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 22, 2012
- Shut in
- Jun 1, 2026
- 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.
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; they carry 5 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Martin Mason O-1-15356 | Eagleville (Eagle Ford-1) | Ineos USA Oil & Gas LLC | 5 | 489K | 315K | Dec 2010 – Jul 2026 |
Oil, barrels lease total
Last 12 months 6,263 · prior 12 9,188(-32%)
Gas, mcf lease total
Last 12 months 3,341 · prior 12 1,656(+102%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Chesapeake Operating, Inc.Jan 2011 → Oct 2014
- 2Chesapeake Operating, L.L.C.Nov 2014 → Mar 2023
- 3Ineos USA Oil & Gas LLCApr 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 719056-98 | Drill | Chesapeake Operating, Inc. | Jun 29, 2011 | Jun 29, 2011 | Aug 20, 2011 | 12,000 |
| 719056-99 | Drill | Chesapeake Operating, Inc. | Jun 23, 2011 | Jun 29, 2011 | Aug 20, 2011 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 22, 2012 | Martin Mason O-1-15356 | Eagleville (Eagle Ford-1) | Ineos USA Oil & Gas LLC | Shut In · shut in Jun 1, 2026 | 9,575 |
Formation tops
As filed on W-2/G-1. Subsea from 392 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Anacacho | 8,885 | -8,493 |
| Austin Chalk | 9,263 | -8,871 |
| Eagle Ford | 9,444 | -9,052 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,841 | 14,816 | Perforated |
| 14,671 | 14,816 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 4,204 | 13.5 | 1,635 S |
| 5.5 | 14,920 | 8.75 | 2,580 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 | Jun 4, 2012 | Apr 26, 2012 | — |
| 00 | Mar 21, 2012 | Dec 16, 2011 | Yes |
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 42-311-34586 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-311-34586 → 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/31134586, documented in the API reference.