WELL · 42-311-34239 · DISTRICT 1
Martin Mason B #1H
McMullen County · Eagleville (Eagle Ford) field · Horizontal
Martin Mason B #1H (API 42-311-34239) is a horizontal well in Mcmullen County operated by Chesapeake Operating Inc., completed November 6, 2010.
The RRC has issued one drilling permit (amended once), issued June 23, 2010, permitted to 12,000 ft.
Completion filings report 3 formation tops, including Anacacho, Austin Chalk, Eagle Ford.
Its 2 leases have reported 259K barrels of oil and 136K mcf of gas since November 2010, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Oklahoma City, OK
- P-5 status
- Delinquent (D)
- P-5 last filed
- Dec 10, 2024
- Permits on file
- 13,061
- Phone
- (405) 935-3100
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Chesapeake Operating Inc. |
| Production reports | Ineos USA Oil & Gas LLCthrough Apr 2026 |
| Latest permit | Chesapeake Operating, Inc.Jun 23, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,000
- total depth, ft
- 2
- permits on file
- Jun 23, 2010
- last permit issued
- Nov 6, 2010
- completed
- 259K
- cumulative oil, bbl
- 136K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2010 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 6, 2010
- 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 2 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Martin Mason B O-1-15437 | Eagleville (Eagle Ford-1) | Ineos USA Oil & Gas LLC | 3 | 259K | 136K | Dec 2010 – Jul 2026 |
| Martin Mason B O-2-9574 | Eagleville (Eagle Ford) | Chesapeake Operating, Inc. | 1 | 0 | 0 | Nov 2010 – Nov 2011 |
Oil, barrels lease total
Last 12 months 873 · prior 12 1,593(-45%)
Gas, mcf lease total
Last 12 months 16 · prior 12 352(-95%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Chesapeake Operating, Inc.Feb 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 |
|---|---|---|---|---|---|---|
| 697885-98 | Drill | Chesapeake Operating, Inc. | Sep 26, 2011 | Jun 23, 2010 | Sep 23, 2010 | 12,000 |
| 697885-99 | Drill | Chesapeake Operating, Inc. | Jun 21, 2010 | Jun 23, 2010 | Sep 23, 2010 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-15437 | — | — | — | — |
| — | — O-2-9574 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 419 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Anacacho | 8,872 | -8,453 |
| Austin Chalk | 9,244 | -8,825 |
| Eagle Ford | 9,435 | -9,016 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,864 | 15,220 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 4,177 | 12.25 | 1,430 S |
| 5.5 | 15,329 | 8.75 | 2,215 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 | Nov 1, 2011 | Jun 8, 2011 | — |
| 00 | Oct 31, 2011 | Apr 11, 2011 | Yes |
| 00 | Aug 18, 2011 | Apr 11, 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 42-311-34239 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-311-34239 → 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/31134239, documented in the API reference.