WELL · 42-391-31640 · DISTRICT 2
Anderson M. A. -A- #A 12
Refugio County · Fagan (6110) field · Vertical
Anderson M. A. -A- #A 12 (API 42-391-31640) is a well in Refugio County operated by Maran Oil Company, completed December 13, 1983.
The RRC has issued 5 drilling permits (amended once) between 1983 and 2026, permitted to 6,212 ft.
It was permitted by T-C Oil Company, LLC and has since transferred to Maran Oil Company on the wellbore schedule.
Completion filings report 5 formation tops, including Miocene (undifferentiated), Catahoula, Greta, Frio.
Its 5 leases have reported 130K barrels of oil and 729K mcf of gas since January 1993, last reporting in July 2026. The leases carry 6 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by T-C Oil Company, LLC; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed Apr 9, 2021 · 46 permits on file · (210) 492-9672
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Maran Oil Company |
| Production reports | T-C Oil Company, LLCthrough Apr 2026 |
| Latest permit | T-C Oil Company, LLCSep 25, 2026 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,212
- total depth, ft
- 6
- permits on file
- Sep 25, 2026
- last permit issued
- Dec 13, 1983
- completed
- 130K
- cumulative oil, bbl
- 729K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 13, 1983
- Shut in
- —
- Plugged
- —
Surface location
28.446828, -97.001018
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Refugio County.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 5 leases this well is completed on; they carry 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Anderson, Mary Alice et al 'A' O-2-12275 | Fagan (Greta Sand) | T-C Oil Company, LLC | 1 | 56.1K | 169K | Dec 2021 – Jul 2026 |
| Anderson, Mary Alice et al "A" O-2-10411 | Fagan (5650) | Maran Oil Company, LLC | 1 | 8.16K | 4.47K | Oct 2012 – Mar 2022 |
| Anderson, Mary Alice et al "A" O-2-8571 | Fagan (5830) | Maran Oil Company | 2 | 65.7K | 90.2K | Nov 2000 – Jun 2017 |
| Anderson, Mary Alice et al "A" G-2-147058 | Fagan (5830) | Maran Oil Company | 1 | 0 | 415K | Oct 1993 – Jan 2001 |
| Anderson, M. A. -A- G-2-112642 | Fagan (6110) | Maran Oil Company | 1 | 0 | 51.3K | Jan 1993 – Oct 1993 |
Oil, barrels lease total
Last 12 months 4,550 · prior 12 8,191(-44%)
Gas, mcf lease total
Last 12 months 55,986 · prior 12 47,977(+17%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Maran Oil CompanyJan 1993 → Dec 2019
- 2Maran Oil Company, LLCDec 2021 → Feb 2022
- 3T-C Oil Company, LLCMar 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 918856-99 | Recompletion | T-C Oil Company, LLC | Sep 22, 2026 | Sep 25, 2026 | — | 6,212 |
| 875704-99 | Recompletion | Maran Oil Company, LLC | Jan 4, 2022 | Jan 7, 2022 | Dec 9, 2021 | 5,500 |
| 749083-99 | Recompletion | Maran Oil Company | Oct 1, 2012 | Oct 8, 2012 | Sep 25, 2012 | 5,850 |
| 415359-98 | Recompletion | Maran Oil Company | Apr 20, 2010 | Aug 30, 1993 | Oct 3, 1993 | 5,850 |
| 415359-99 | Recompletion | Maran Oil Company | Aug 25, 1993 | Aug 30, 1993 | Oct 3, 1993 | 5,850 |
| 195798-99 | Drill | Maran Oil Company | Apr 13, 1984 | May 19, 1983 | — | 6,212 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-112642 | — | — | — | — |
| — | — G-2-147058 | — | — | — | — |
| — | — O-2-8571 | — | — | — | — |
| — | — O-2-10411 | — | — | — | — |
| — | — O-2-12275 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 66 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE | 2,130 | -2,064 |
| Catahoula | 3,743 | -3,677 |
| Greta | 4,635 | -4,569 |
| Frio | 5,360 | -5,294 |
| Lagarto | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,706 | 4,710 | Perforated |
| 5,586 | 5,592 | Perforated |
| 5,814 | 5,820 | Perforated |
| 6,110 | 6,113 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,604 | 13.5 | 725 S |
| 5.5 | 6,201 | 7.875 | 975 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 18, 2022 | Jan 31, 2022 | — |
| 00 | May 6, 2013 | Nov 28, 2012 | — |
| 00 | Jan 31, 2001 | Nov 16, 2000 | — |
| 00 | Dec 5, 2000 | — | — |
| 00 | Mar 31, 1994 | Oct 21, 1993 | Yes |
| 00 | Nov 8, 1993 | — | — |
| 00 | Oct 23, 1984 | Sep 14, 1984 | — |
| 00 | Oct 12, 1984 | — | — |
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 42-391-31640 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-31640 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Mary Alice Anderson, et al 'A'42-391-33263
0.3 KM · T-C Oil Company, LLC · Section with this well →
| Jackson | 3,810 | -3,755 |
| Jackson | 3,810 | -3,755 |
| Frio | 4,630 | -4,575 |
| Catahoula | 5,300 | -5,245 |
Mary Alice Anderson, et al -A-42-391-32953
0.4 KM · Maran Oil Company · Section with this well →
| Lagarto | 1 | 53 |
| Oakville | 2,195 | -2,141 |
| Oakille | 2,195 | -2,141 |
| Catahoula | 3,730 | -3,676 |
| Greta | 4,760 | -4,706 |
| Frio | 5,480 | -5,426 |
Mary Alice Anderson et al 'A'42-391-33273
0.6 KM · T-C Oil Company, LLC · Section with this well →
| Jackson | 3,737 | -3,682 |
| Frio | 4,630 | -4,575 |
| Catahoula | 4,900 | -4,845 |
Fagan42-391-33171
4.4 KM · Frostwood Energy, LLC · Section with this well →
| Catahoula | 3,732 | -3,672 |
| Anahuac | 4,066 | -4,006 |
| Frio | 4,476 | -4,416 |
| Jackson | — |
Fagan42-391-32901
4.8 KM · Great Bay Operations, LLC · Section with this well →
| Catahoula | 3,720 | -3,659 |
| Anahuac | 4,400 | -4,339 |
| Greta | 4,460 | -4,399 |
| McFaddin N 4450 | 4,460 | -4,399 |
| McFaddin N 4450' | 4,466 | -4,405 |
O'Connor42-391-33202
4.9 KM · T-C Oil Company, LLC · Section with this well →
| Jackson | 2,150 | -2,091 |
| Frio | 3,744 | -3,685 |
| Catahoula | 4,407 | -4,348 |
O'Connor42-391-33222
5.1 KM · T-C Oil Company, LLC · Section with this well →
| Miocene (undifferentiated) | 2,839 | -2,778 |
| Jackson | 2,839 | -2,778 |
| Catahoula | 3,672 | -3,611 |
| Greta | 4,395 | -4,334 |
| Frio | 4,395 | -4,334 |
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/39131640, documented in the API reference.