WELL · 42-451-31487 · DISTRICT 7
Tweedy AF #8
Tom Green County · Atkinson W. (San Angelo) field · Vertical
Tweedy AF #8 (API 42-451-31487) is a well in Tom Green County operated by Swartz Oil Company, completed December 11, 1984.
The RRC has issued one drilling permit, issued October 2, 1984, permitted to 1,200 ft.
It was permitted by Swartz, Guy A. and has since transferred to Swartz Oil Company on the wellbore schedule.
Completion filings report 4 formation tops, including Queen, Grayburg, San Andres, San Angelo.
Its 2 leases have reported 462K barrels of oil and 841 mcf of gas since January 1993, last reporting in July 2026. The leases carry 55 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Swartz, Guy A.; the EWA schedule now lists a different operator.
San Angelo, TX · P-5 Y, filed Dec 4, 2025 · 52 permits on file · (325) 650-4468
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Swartz Oil Company |
| Production reports | Lainco, Inc.through Mar 2026 |
| Latest permit | Swartz, Guy A.Oct 2, 1984 |
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
- 1
- permits on file
- Oct 2, 1984
- last permit issued
- Dec 11, 1984
- completed
- 462K
- cumulative oil, bbl
- 841
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 11, 1984
- 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 55 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Tweedy O-9-9252 | Atkinson, W. (San Angelo) | Lainco, Inc. | 42 | 449K | 625 | Jan 1993 – Jul 2026 |
| Tweedy "AF" O-9-10109 | Atkinson, W. (San Angelo) | Swartz Oil Company | 13 | 12.8K | 216 | Jan 1993 – Jun 1996 |
Oil, barrels lease total
Last 12 months 3,604 · prior 12 4,235(-15%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Swartz, Guy A.Jan 1993 → Aug 1993
- 2Swartz Oil CompanySep 1993 → Jul 2016
- 3Caminar Oil & Gas, LLCAug 2016 → Aug 2024
- 4Lainco, Inc.Sep 2024 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 253691-99 | Drill | Swartz, Guy A. | Oct 1, 1984 | Oct 2, 1984 | Nov 6, 1984 | 1,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-9252 | — | — | — | — |
| — | — O-9-10109 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,105 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen | 193 | 1,912 |
| Grayburg | 442 | 1,663 |
| San Andres | 495 | 1,610 |
| San Angelo | 763 | 1,342 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 763 | 772 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 5.5 | 763 | 7.875 | 400 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 | Mar 5, 1996 | Dec 21, 1984 | — |
| 00 | Jan 14, 1985 | Dec 21, 1984 | — |
| 00 | Jan 5, 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 42-451-31487 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-451-31487 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 0
- bbl, all reported
- —
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000092458 | H-1 Injection | Not activated | 600 | 1,000 | 763–772 |
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/45131487, documented in the API reference.