WELL · 42-173-31681 · DISTRICT 8
Lefevre Unit #1
Glasscock County · Saint Lawrence (Strawn) field · Vertical
Lefevre Unit #1 (API 42-173-31681) is a well in Glasscock County operated by Great Western Onshore Inc., completed September 28, 1984.
The RRC has issued one drilling permit, issued August 16, 1984, permitted to 10,200 ft.
It was permitted by L & B Oil CO. Inc. and has since transferred to Great Western Onshore Inc. on the wellbore schedule.
Completion filings report 5 formation tops, including Yates, San Andres, Clear Fork, Wolfcamp.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by L & B Oil Co. Inc.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jul 3, 1997 · 26 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Great Western Onshore Inc. |
| Production reports | XTO Energy Inc.through Apr 2026 |
| Latest permit | L & B Oil Co. Inc.Aug 16, 1984 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,200
- total depth, ft
- 1
- permits on file
- Aug 16, 1984
- last permit issued
- Sep 28, 1984
- completed
- 0
- cumulative oil, bbl
- 686K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 28, 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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Lefevre Unit G-10-136414 | Saint Lawrence (Strawn) | XTO Energy Inc. | 1 | 0 | 686K | Jan 1993 – Jul 2026 |
| — O-10-29429 | — | — | 0 | 0 | 0 | — |
Gas, mcf lease total
Last 12 months 965 · prior 12 980(-2%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Costilla Petroleum CorporationJan 1993 → Jan 1997
- 2Costilla Energy, Inc.Feb 1997 → Dec 1997
- 3Concho Resources Inc.Jan 1998 → Jun 2001
- 4Devon Energy Production Co, L.P.Jul 2001 → Jun 2002
- 5Jetta Operating Company, Inc.Jul 2002 → Jan 2005
- 6Sundown Energy LPFeb 2005 → Jan 2014
- 7XTO Energy Inc.Feb 2014 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 248648-99 | Drill | L & B Oil Co. Inc. | Aug 16, 1984 | Aug 16, 1984 | — | 10,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-10-136414 | — | — | — | — |
| — | — O-10-29429 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,704 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,913 | 791 |
| San Andres | 3,059 | -355 |
| Clear ForkCLEARFORK | 5,528 | -2,824 |
| WolfcampWOLFCAMP LIME | 8,228 | -5,524 |
| WolfcampWOLFCAMP LINE | 8,228 | -5,524 |
| Strawn | 9,913 | -7,209 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,965 | 9,981 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 413 | 17.5 | 425 S |
| 13.375 | 414 | 17.5 | 425 S |
| 9.625 | 3,200 | 12.25 | 400 S |
| 5.5 | 9,995 | 8.088 | 805 S |
| 5.5 | 9,995 | 8.75 | 805 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 | Apr 4, 1991 | Nov 14, 1990 | — |
| 00 | Jan 10, 1991 | — | — |
| 00 | Jan 25, 1985 | Jan 16, 1985 | — |
| 00 | Jan 15, 1985 | Dec 18, 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 42-173-31681 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-31681 → 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/17331681, documented in the API reference.