WELL · 42-371-36266 · DISTRICT 8
Millar L. H. Etal #20
Pecos County · Wentz (Wichita-Albany) field · Vertical
Millar L. H. Etal #20 (API 42-371-36266) is a plugged well in Pecos County, plugged June 6, 2023, last operated by Olsen Energy Inc..
The RRC has issued 2 drilling permits between 1990 and 2014, permitted to 4,500 ft.
Completion filings report 8 formation tops, including Tansill, Yates, Seven Rivers, Queen.
Its 2 leases have reported 4.31K barrels of oil and 1.71M mcf of gas since January 1993, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Boerne, TX · P-5 Y, filed May 4, 2026 · 243 permits on file · (210) 834-4655
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Olsen Energy Inc. |
| Production reports | Olsen Energy Inc.through Nov 2019 |
| Latest permit | Olsen Energy Inc.Sep 26, 2014 |
- 4,500
- total depth, ft
- 2
- permits on file
- Sep 26, 2014
- last permit issued
- Oct 26, 1990
- completed
- 4.31K
- cumulative oil, bbl
- 1.71M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 26, 1990
- Shut in
- —
- Plugged
- Jun 6, 2023
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Millar, L.H. Etal O-10-46055 | Wentz (San Andres) | Olsen Energy Inc. | 1 | 4.31K | 0 | Sep 2014 – Jul 2026 |
| Millar, L. H. Etal G-10-136706 | Wentz (Wichita-Albany) | Olsen Energy Inc. | 1 | 0 | 1.71M | Jan 1993 – Sep 2014 |
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.
- 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 → Nov 2019
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 796204-99 | Recompletion | Olsen Energy Inc. | Sep 12, 2014 | Sep 26, 2014 | Sep 15, 2014 | 1,903 |
| 376886-99 | Drill | Chevron U. S. A. Inc. | Aug 21, 1990 | Aug 23, 1990 | Aug 13, 1990 | 4,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-10-136706 | — | — | — | — |
| — | — O-10-46055 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,516 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Tansill | 700 | 1,816 |
| Yates | 753 | 1,763 |
| Seven Rivers7 RIVERS | 845 | 1,671 |
| Queen | 1,263 | 1,253 |
| San Andres | 1,560 | 956 |
| Dolomite | 2,080 | 436 |
| Clear ForkCLEARFORK | 2,133 | 383 |
| Dolomite | 2,136 | 380 |
| Tubb | 2,820 | -304 |
| Dolomite | 3,170 | -654 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,566 | 1,612 | Perforated |
| 3,849 | 3,904 | Perforated |
| 3,973 | 4,154 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 650 | 12.25 | 420 S |
| 5.5 | 4,260 | 7.875 | 1,335 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 30, 2015 | Sep 29, 2014 | Yes |
| 00 | Mar 5, 1991 | Nov 28, 1990 | Yes |
| 00 | Feb 4, 1991 | — | — |
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 42-371-36266 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-36266 → 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/37136266, documented in the API reference.