TEXAS · WELLS · ZAPATA COUNTY · THOMASMA, RAY J. LEASE · API 42-505-35052 · DISTRICT 04
Thomasma Ray J. #12
Zapata County · Zwebb (10350) field · Directional
Thomasma Ray J. #12 (API 42-505-35052) is a plugged well in Zapata County, plugged March 31, 2022, last operated by Hilcorp Energy Company.
The RRC has issued one drilling permit (amended once), issued July 19, 2004, permitted to 13,000 ft.
It was permitted by Devon Energy Production CO, L.P. and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Its lease has reported 4.21K barrels of oil and 372K mcf of gas since October 2004, with no volume in the three years through April 2026.
Operator of record
Permitted by Devon Energy Production Co, L.P.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,458
- Phone
- (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hilcorp Energy Company |
| Production reports | Hilcorp Energy Companythrough May 2015 |
| Latest permit | Devon Energy Production Co, L.P.Jul 19, 2004 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,000
- total depth, ft
- 2
- permits on file
- Jul 19, 2004
- last permit issued
- Oct 17, 2004
- completed
- 4.21K
- cumulative oil, bbl
- 372K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2004 THROUGH May 2015
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 17, 2004
- Shut in
- —
- Plugged
- Mar 31, 2022
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Thomasma, Ray J. G-4-206935 | Zwebb (10350) | Hilcorp Energy Company | 1 | 4.21K | 372K | Oct 2004 – May 2015 |
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.
- 1Devon Energy Production Co, L.P.Oct 2004 → Jun 2014
- 2Linn Operating, Inc.Aug 2014 → May 2015
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 548326-98 | Drill | Devon Energy Production Co, L.P. | Aug 24, 2004 | Jul 19, 2004 | Sep 12, 2004 | 13,000 |
| 548326-99 | Drill | Devon Energy Production Co, L.P. | Jul 16, 2004 | Jul 19, 2004 | — | 13,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 17, 2004 | Thomasma Ray J. G-4-206935 | Zwebb (10350) | Hilcorp Energy Company | Plugged | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,617 | 11,652 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,023 | 14.75 | 660 S |
| 7.625 | 7,929 | 9.875 | 615 S |
| 4.5 | 11,999 | 6.5 | 490 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jun 3, 2005 | Jan 18, 2005 | Yes |
| 00 | Mar 22, 2005 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Jun 25, 2008. Gamma ray, Resistivity, Sonic. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| Acoustic PorosityARRAY INDUCTION GAMMA RAY DIPOLE SONIC | TIFF | 7,943 to 12,012 | Jun 25, 2008run Oct 5, 2004 | — |
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 42-505-35052 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-505-35052 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/50535052, documented in the API reference.