WELL · 42-239-32277 · DISTRICT 2
Sembera Unit #1
Jackson County · LA Salle field · Vertical
Sembera Unit #1 (API 42-239-32277) is a plugged well in Jackson County, plugged November 2, 1995, last operated by Tomahawk Petroleum.
The RRC has issued one drilling permit, issued March 21, 1986, permitted to 7,850 ft.
It was permitted by Pierce Petroleum and has since transferred to Tomahawk Petroleum on the wellbore schedule.
Completion filings report 2 formation tops, including Marginulina "A", Sinton Sand.
Operator of record
Permitted by Pierce Petroleum; the EWA schedule now lists a different operator.
Lakehills, TX · P-5 Y, filed Jun 4, 2026
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Tomahawk Petroleum |
| Production reports | none |
| Latest permit | Pierce PetroleumMar 21, 1986 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,850
- total depth, ft
- 1
- permits on file
- Mar 21, 1986
- last permit issued
- Apr 21, 1986
- completed
- 0
- 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
- Apr 21, 1986
- Shut in
- —
- Plugged
- Nov 2, 1995
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sembera Unit O-2-7169 | LA Salle | Tomahawk Petroleum | 2 | 0 | 0 | Jan 1993 – Jul 2026 |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 300088-99 | Drill | Pierce Petroleum | Aug 15, 1986 | Mar 21, 1986 | Mar 25, 1986 | 7,850 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-7169 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 32 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Marginulina "A" | 5,065 | -5,033 |
| Sinton Sand | 5,528 | -5,496 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,061 | 5,067 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,608 | 13.5 | 820 S |
| 4.5 | 6,314 | 8.75 | 735 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 | Sep 26, 1986 | Jun 18, 1986 | Yes |
| 00 | Sep 20, 1986 | — | — |
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 42-239-32277 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-239-32277 → 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/23932277, documented in the API reference.