WELL · 42-371-36803 · DISTRICT 8
Millar L. H. Etal #31
Pecos County · Wentz (San Andres) field · Vertical
Millar L. H. Etal #31 (API 42-371-36803) is a well in Pecos County operated by Olsen Energy Inc., completed March 5, 1998.
The RRC has issued 2 drilling permits between 1998 and 2008, permitted to 3,200 ft.
Completion filings report 6 formation tops, including Rustler, Tansill, Yates, Queen.
Its 3 leases have reported 1.12M barrels of oil and 266K mcf of gas since January 1993, last reporting in July 2026. The leases carry 32 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Boerne, TX
- P-5 status
- Active (A)
- P-5 last filed
- May 26, 2026
- Permits on file
- 243
- Phone
- (210) 496-2466
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Olsen Energy Inc. |
| Production reports | Olsen Energy Inc.through Apr 2026 |
| Latest permit | Olsen Energy Inc.Jul 23, 2008 |
- 3,200
- total depth, ft
- 2
- permits on file
- Jul 23, 2008
- last permit issued
- Mar 5, 1998
- completed
- 1.12M
- cumulative oil, bbl
- 266K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 5, 1998
- 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 3 leases this well is completed on; they carry 32 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Millar, L. H., Etal O-10-16209 | Wentz (Clear Fork) | Olsen Energy Inc. | 16 | 724K | 51.8K | Jan 1993 – Jul 2026 |
| Millar, L. H.,etal "39" O-10-40048 | Wentz (Clear Fork) | Olsen Energy Inc. | 13 | 375K | 168K | Jun 2010 – Jul 2026 |
| Millar, L. H. Etal O-10-35256 | Wentz (San Andres) | Olsen Energy Inc. | 3 | 24.2K | 46.8K | Nov 1996 – Dec 2008 |
Oil, barrels lease total
Last 12 months 40,852 · prior 12 42,973(-5%)
Gas, mcf lease total
Last 12 months 1,973 · prior 12 3,217(-39%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Chevron U. S. A. Inc.Jan 1993 → Aug 1999
- 2Belco Energy Corp.Sep 1999 → Feb 2002
- 3Westport Oil and Gas Company, LPMar 2002 → Feb 2006
- 4Kerr-McGee Oil & Gas Onshore LPMar 2006 → Dec 2006
- 5Olsen Energy Inc.Jan 2007 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 662630-99 | Recompletion | Olsen Energy Inc. | May 21, 2008 | Jul 23, 2008 | Jun 23, 2008 | 3,200 |
| 472220-99 | Drill | Chevron U. S. A. Inc. | Jan 14, 1998 | Jan 15, 1998 | Jan 31, 1998 | 1,750 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-16209 | — | — | — | — |
| — | — O-10-35256 | — | — | — | — |
| — | — O-10-40048 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,518 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,542 | 1,552 | Perforated |
| 2,856 | 2,876 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 540 | 12.25 | 500 S |
| 7 | 1,750 | 8.75 | 400 S |
| 4.5 | 3,024 | 6.25 | 300 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 | Jul 27, 2010 | Aug 18, 2008 | Yes |
| 00 | Dec 30, 2008 | Aug 18, 2008 | Yes |
| 00 | Dec 5, 2008 | Apr 6, 1998 | Yes |
| 00 | Aug 6, 1998 | Apr 6, 1998 | Yes |
| 00 | Jul 27, 1998 | — | — |
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 42-371-36803 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-36803 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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/37136803, documented in the API reference.