WELL · 42-177-31789 · DISTRICT 1
Mostyn #1H
Gonzales County · Eagleville (Eagle Ford) field · Horizontal · Sidetrack
Mostyn #1H (API 42-177-31789) is a horizontal well in Gonzales County operated by Modern Exploration Inc., completed April 15, 2010.
The RRC has issued 3 drilling permits (amended once) between 1990 and 2010, permitted to 13,100 ft.
Completion filings report 9 formation tops, including Midway, Poth, Navarro, Taylor.
Its 3 leases have reported 178K barrels of oil and 32.4K mcf of gas since January 1993, last reporting in July 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Sherman, TX · P-5 Y, filed May 4, 2026 · 195 permits on file · (903) 893-1129
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Modern Exploration Inc. |
| Production reports | Modern Exploration, Inc.through Apr 2026 |
| Latest permit | Modern Exploration, Inc.Feb 5, 2010 |
- 13,100
- total depth, ft
- 4
- permits on file
- Feb 5, 2010
- last permit issued
- Apr 15, 2010
- completed
- 178K
- cumulative oil, bbl
- 32.4K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 15, 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 3 leases this well is completed on; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mostyn O-1-15273 | Eagleville (Eagle Ford-1) | Modern Exploration, Inc. | 1 | 83.5K | 0 | Dec 2010 – Jul 2026 |
| Mostyn O-2-9537 | Eagleville (Eagle Ford) | Modern Exploration, Inc. | 1 | 25.9K | 0 | Apr 2010 – Oct 2013 |
| Jewett, C. E. O-1-12828 | First Shot (Austin Chalk) | Modern Exploration, Inc. | 1 | 69.1K | 32.4K | Jan 1993 – Jun 2011 |
Oil, barrels lease total
Last 12 months 1,349 · prior 12 1,846(-27%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Wainoco Oil & Gas CompanyJan 1993 → Feb 1993
- 2Tuskar (Texas), Inc.Mar 1993 → Aug 1996
- 3Modern Exploration, Inc.Oct 1996 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 690716-98 | Recompletion | Modern Exploration, Inc. | Dec 7, 2010 | Feb 5, 2010 | Mar 28, 2010 | 10,000 |
| 690716-99 | Recompletion | Modern Exploration, Inc. | Feb 3, 2010 | Feb 5, 2010 | — | 10,000 |
| 463660-99 | Recompletion · sidetrack | Modern Exploration, Inc. | Jun 12, 1997 | Jun 13, 1997 | Jul 22, 1997 | 8,999 |
| 375139-99 | Drill | Wainoco Oil & Gas Company | Jul 3, 1990 | Jul 3, 1990 | Jul 18, 1990 | 13,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-12828 | — | — | — | — |
| — | — O-1-15273 | — | — | — | — |
| — | — O-2-9537 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 8,986 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Midway | 5,900 | 3,086 |
| Poth | 6,082 | 2,904 |
| Navarro | 6,946 | 2,040 |
| Taylor | 7,560 | 1,426 |
| Anacocho | 8,425 | 561 |
| Anacacho | 8,432 | 554 |
| Austin Chalk | 8,551 | 435 |
| Austin Chalk | 8,560 | 426 |
| Austin Chalk | 8,570 | 416 |
| Eagle Ford | 8,878 | 108 |
| Buda | 8,998 | -12 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,706 | 11,884 | Open hole |
| 8,706 | 11,921 | Open hole |
| 9,326 | 11,740 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 920 | 17.5 | 750 S |
| 9.625 | 8,706 | 12.25 | 280 S |
| 4.5 | 11,828 | 6.75 | 850 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 3, 2011 | Sep 27, 2010 | Yes |
| 00 | May 4, 2011 | Oct 14, 1997 | — |
| 00 | Apr 27, 2011 | Oct 14, 1997 | — |
| 00 | May 21, 1999 | Oct 14, 1997 | — |
| 00 | Feb 7, 1991 | Nov 30, 1990 | Yes |
| 00 | Jan 24, 1991 | — | — |
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 42-177-31789 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-177-31789 → 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/17731789, documented in the API reference.