WELL · 42-211-31903 · DISTRICT 10
Mathers #1023
Hemphill County · Gill Ranch (Sweetwater Sand) field · Vertical
Mathers #1023 (API 42-211-31903) is a well in Hemphill County operated by Seagull Energy E&P Inc., completed May 7, 1991.
The RRC has issued 3 drilling permits between 1989 and 2009, permitted to 12,300 ft.
It was permitted by Devon Energy Production CO, L.P. and has since transferred to Seagull Energy E&P Inc. on the wellbore schedule.
Completion filings report 7 formation tops, including Brown Dolomite, Heebner, Missourian, Granite Wash.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Devon Energy Production Co, L.P.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Feb 5, 2016 · 172 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Seagull Energy E&P Inc. |
| Production reports | Mmgl Txph, LLCthrough Apr 2026 |
| Latest permit | Devon Energy Production Co, L.P.Jul 1, 2009 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,300
- total depth, ft
- 3
- permits on file
- Jul 1, 2009
- last permit issued
- May 7, 1991
- completed
- 0
- cumulative oil, bbl
- 11.9M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 7, 1991
- 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 |
|---|---|---|---|---|---|---|
| Mathers G-14-253355 | Gill Ranch (Granite Wash) | Mmgl Txph, LLC | 1 | 0 | 5.49M | Jul 2009 – Jul 2026 |
| Mathers G-14-131976 | Gill Ranch (Morrow) | Devon Energy Production Co, L.P. | 1 | 0 | 3.82M | Jan 1993 – Aug 2009 |
| Mathers G-14-138728 | Gill Ranch (Sweetwater Sand) | Seagull Energy E&P Inc. | 1 | 0 | 2.63M | Jan 1993 – Mar 2000 |
Gas, mcf lease total
Last 12 months 96,890 · prior 12 113,949(-15%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marsh Operating CompanyJan 1993 → Dec 1995
- 2Seagull Midcon Inc.Jan 1996 → May 1998
- 3Seagull Energy E&P Inc.Jun 1998 → Oct 2000
- 4Ocean Energy, Inc.Nov 2000 → Aug 2003
- 5Devon Louisiana CorporationSep 2003 → Dec 2005
- 6Devon Energy Production Co, L.P.Jan 2006 → Jun 2016
- 7Tecolote Energy Operating, LLCJul 2016 → Dec 2019
- 8Blackbeard Operating, LLCJan 2020 → Sep 2023
- 9Mmgl Txph, LLCOct 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 682574-99 | Recompletion | Devon Energy Production Co, L.P. | Jun 26, 2009 | Jul 1, 2009 | Jul 10, 2009 | 12,300 |
| 386563-99 | Other | Marsh Operating Company | Apr 9, 1991 | Apr 12, 1991 | Apr 15, 1991 | 12,300 |
| 356102-99 | Drill | Marsh Operating Company | Feb 15, 1989 | Mar 2, 1989 | — | 12,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-14-131976 | — | — | — | — |
| — | — G-14-138728 | — | — | — | — |
| — | — G-14-253355 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,977 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Brown Dolomite | 4,610 | -1,633 |
| Heebner | 5,914 | -2,937 |
| Missourian | 7,946 | -4,969 |
| Granite Wash | 8,650 | -5,673 |
| Morrow | 11,706 | -8,729 |
| MississippianMISS. CHESTER | 12,130 | -9,153 |
| MississippianMISSISSIPPIAN CHESTER | 12,130 | -9,153 |
| Meramac | 12,190 | -9,213 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,672 | 8,702 | Perforated |
| 8,713 | 8,729 | Perforated |
| 8,742 | 8,753 | Perforated |
| 11,508 | 11,532 | Perforated |
| 11,815 | 11,820 | Perforated |
| 11,815 | 11,841 | Perforated |
| 11,829 | 11,841 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 932 | 12.25 | 655 S |
| 8.625 | 3,193 | 12.25 | 655 S |
| 5.5 | 12,300 | 7.875 | 415 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 11, 2010 | Oct 9, 2009 | Yes |
| 00 | Dec 10, 2009 | — | — |
| 00 | Sep 23, 1999 | Aug 11, 1999 | — |
| 00 | Aug 7, 1991 | Jun 10, 1991 | Yes |
| 00 | Jul 26, 1991 | — | — |
| 00 | Oct 18, 1989 | Sep 20, 1989 | Yes |
| 00 | Oct 10, 1989 | Oct 3, 1989 | — |
| 00 | Oct 5, 1989 | — | — |
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 42-211-31903 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-211-31903 → 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/21131903, documented in the API reference.