WELL · 42-417-36105 · DISTRICT 7
Matthews B #21
Shackelford County · Shackelford County Regular field · Vertical
Matthews B #21 (API 42-417-36105) is a plugged well in Shackelford County, plugged July 7, 2023, last operated by Rocoso Resources LLC.
The RRC has issued 2 drilling permits between 1984 and 1985, permitted to 1,200 ft.
It was permitted by American Petrofina CO. Of Tex. and has since transferred to Rocoso Resources LLC on the wellbore schedule.
Completion filings report 6 formation tops, including Dothan, Moutrey, Camp Colorado, Frye.
Its lease has reported 3 barrels of oil since January 1993, last reporting in July 2026. The lease carries 4 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by American Petrofina Co. of Tex.; the EWA schedule now lists a different operator.
Albany, TX · P-5 Y, filed Aug 4, 2023 · 1 permits on file · (325) 725-2097
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Rocoso Resources LLC |
| Production reports | Rocoso Resources, LLCthrough Oct 2011 |
| Latest permit | American Petrofina Co. of Tex.May 17, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,200
- total depth, ft
- 2
- permits on file
- May 17, 1985
- last permit issued
- Jun 20, 1985
- completed
- 3
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 20, 1985
- Shut in
- —
- Plugged
- Jul 7, 2023
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Matthews B O-8-3340 | Shackelford County Regular | Rocoso Resources, LLC | 4 | 3 | 0 | Jan 1993 – Jul 2026 |
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.
- 1Rocoso Resources, LLCOct 2011 → Oct 2011
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 275302-99 | Recompletion | American Petrofina Co. of Tex. | May 13, 1985 | May 17, 1985 | — | 1,106 |
| 262001-99 | Drill | American Petrofina Co. of Tex. | Dec 19, 1984 | Dec 20, 1984 | — | 1,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-3340 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,573 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Dothan | 702 | 871 |
| Moutrey | 708 | 865 |
| Camp Colorado | 766 | 807 |
| Frye | 790 | 783 |
| Tannehill | 888 | 685 |
| Saddle Creek | 988 | 585 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 790 | 800 | Perforated |
| 890 | 894 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 932 | 6.75 | — |
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 | Aug 12, 1985 | Jul 3, 1985 | — |
| 00 | May 7, 1985 | Apr 12, 1985 | — |
| 00 | Apr 20, 1985 | — | — |
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 42-417-36105 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-417-36105 → 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/41736105, documented in the API reference.