WELL · 42-237-39629 · DISTRICT 9
Mathis #1
Jack County · Newark East (Barnett Shale) field · Vertical
Mathis #1 (API 42-237-39629) is a well in Jack County operated by Cobra Oil & Gas Corporation, completed August 23, 2012.
The RRC has issued 2 drilling permits between 2012 and 2013, permitted to 6,000 ft.
Completion filings report 5 formation tops, including Pregnant Shale, Atoko Conglomerate, Atoko Congomerate, Marble Falls.
Its 2 leases have reported 6.82K barrels of oil and 109K mcf of gas since August 2012, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Wichita Falls, TX · P-5 Y, filed Dec 4, 2025 · 778 permits on file · (940) 720-2597
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Cobra Oil & Gas Corporation |
| Production reports | White Knight Production LLCthrough Mar 2023 |
| Latest permit | Cobra Oil & Gas CorporationOct 4, 2013 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,000
- total depth, ft
- 2
- permits on file
- Oct 4, 2013
- last permit issued
- Aug 23, 2012
- completed
- 6.82K
- cumulative oil, bbl
- 109K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2012 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 23, 2012
- 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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mathis O-13-32699 | KRS (Marble Falls) | FX Energy Operating, LLC | 1 | 6.82K | 109K | Aug 2012 – Jul 2026 |
| Mathis O-13-32459 | Newark, East (Barnett Shale) | Cobra Oil & Gas Corporation | 1 | 0 | 0 | Aug 2012 – Feb 2014 |
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.
- 1Cobra Oil & Gas CorporationAug 2012 → Oct 2013
- 2Newark E&P Operating, LLCNov 2013 → Apr 2017
- 3White Knight Production LLCSep 2018 → Sep 2018
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 767964-99 | Field transfer | Cobra Oil & Gas Corporation | Aug 8, 2013 | Oct 4, 2013 | Jul 17, 2012 | 6,000 |
| 743869-99 | Drill | Cobra Oil & Gas Corporation | Jun 29, 2012 | Jul 11, 2012 | Jul 17, 2012 | 6,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-32459 | — | — | — | — |
| — | — O-13-32699 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,089 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Pregnant Shale | 4,382 | -3,293 |
| Atoko Conglomerate | 4,499 | -3,410 |
| Atoko Congomerate | 4,499 | -3,410 |
| Marble Falls | 4,949 | -3,860 |
| Comyn LS | 5,186 | -4,097 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,961 | 5,302 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 341 | 11 | 160 S |
| 5.5 | 5,425 | 7.875 | 290 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 5, 2013 | Oct 15, 2013 | Yes |
| 00 | Apr 30, 2013 | Sep 7, 2012 | 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 42-237-39629 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-237-39629 → 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/23739629, documented in the API reference.