WELL · 42-371-36270 · DISTRICT 8
Millar L. H. #21
Pecos County · Wentz (Wichita-Albany) field · Vertical
Millar L. H. #21 (API 42-371-36270) is a well in Pecos County operated by Olsen Energy Inc., completed November 8, 1990.
The RRC has issued 2 drilling permits between 1990 and 2025, permitted to 4,500 ft.
Completion filings report 13 formation tops, including Yates, Seven Rivers, Queen, Grayburg.
Its 2 leases have reported 416K barrels of oil and 894K mcf of gas since January 1993, last reporting in July 2026. The leases carry 18 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 Apr 2026 |
| Latest permit | Olsen Energy Inc.Jul 10, 2025 |
- 4,500
- total depth, ft
- 2
- permits on file
- Jul 10, 2025
- last permit issued
- Nov 8, 1990
- completed
- 416K
- cumulative oil, bbl
- 894K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 8, 1990
- Shut in
- —
- Plugged
- —
Surface location
30.989801, -102.383186
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Pecos County.
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 18 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Millar, L. H.,etal "39" O-10-40048 | Wentz (Clear Fork) | Olsen Energy Inc. | 13 | 375K | 168K | Jun 2010 – Jul 2026 |
| Millar, L. H. O-10-32915 | Wentz (Wichita-Albany) | Olsen Energy Inc. | 5 | 41.7K | 726K | Jan 1993 – Mar 2026 |
Oil, barrels lease total
Last 12 months 15,261 · prior 12 20,821(-27%)
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 |
|---|---|---|---|---|---|---|
| 907326-99 | Recompletion | Olsen Energy Inc. | Apr 9, 2025 | Jul 10, 2025 | — | 3,900 |
| 377719-99 | Drill | Chevron U. S. A. Inc. | Sep 10, 1990 | Sep 11, 1990 | Sep 13, 1990 | 4,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-32915 | — | — | — | — |
| — | — O-10-40048 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,516 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 742 | 1,774 |
| Seven Rivers | 850 | 1,666 |
| Queen | 1,240 | 1,276 |
| Grayburg | 1,342 | 1,174 |
| San AndresSAN ANDRES - USABLE QUALITY WATE | 1,536 | 980 |
| Clear ForkCLEARFORK | 2,103 | 413 |
| Tubb | 2,770 | -254 |
| Wichita-Albany | 3,124 | -608 |
| CapitanCAPITAN REEF - HIGH FLOWS | — | — |
| O'Brien | — | — |
| Rustler | — | — |
| Soma | — | — |
| Toborg | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,830 | 2,880 | Perforated |
| 3,952 | 4,293 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 618 | 12.25 | 500 S |
| 5.5 | 4,560 | 7.875 | 1,660 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 | Mar 13, 2026 | Jan 13, 2026 | — |
| 00 | Jan 30, 1991 | Nov 27, 1990 | Yes |
| 00 | Jan 9, 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 42-371-36270 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-36270 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Woodward '56'42-371-37056
5.5 KM · Reatta Energy, Inc. · Section with this well →
| San Andres | 1,688 | 1,050 |
| Wichita-Albany | 4,150 | -1,412 |
| Wichita-Albany | 4,150 | -1,412 |
| Wolfcamp | 4,722 | -1,984 |
Millar, L.H.42-371-37432
5.6 KM · Reatta Energy, Inc. · Section with this well →
| Toborg | 100 | 2,533 |
| Soma | 300 | 2,333 |
| Rustler | 590 | 2,043 |
| Yates | 860 | 1,773 |
| Seven Rivers | 909 | 1,724 |
| Queen | 1,333 | 1,300 |
| Grayburg | 1,390 | 1,243 |
| Glorieta | 2,133 | 500 |
10 TOPS · FIRST 8
Woodward 5642-371-37136
5.7 KM · Reatta Energy, Inc. · Section with this well →
| Seven Rivers | 1,482 | 1,455 |
| Queen | 1,714 | 1,223 |
| San Andres | 1,860 | 1,077 |
| Wichita-Albany | 4,311 | -1,374 |
| Wichita-Albany | 4,311 | -1,374 |
| Wolfcamp | 4,894 | -1,957 |
Woodward '56'42-371-37225
5.8 KM · Reatta Energy, Inc. · Section with this well →
| Toborg | 200 | 2,756 |
| Soma | 700 | 2,256 |
| Rustler | 900 | 2,056 |
| Yates | 1,172 | 1,784 |
| Seven Rivers | 1,496 | 1,460 |
| Grayburg | 1,550 | 1,406 |
| Queen | 1,650 | 1,306 |
| San Andres | 2,290 | 666 |
13 TOPS · FIRST 8
Yates Field Unit42-371-36450
6.7 KM · Kinder Morgan Production Co LLC · Section with this well →
| Glorieta | 2,366 | 23 |
| Clear Fork | 2,505 | -116 |
| Clear Fork | 3,023 | -634 |
University 742-371-40039
8.7 KM · V-F Petroleum Inc. · Section with this well →
| Yates | 914 | 1,668 |
| Seven Rivers | 1,075 | 1,507 |
| Queen | 1,382 | 1,200 |
| Grayburg | 1,515 | 1,067 |
| Glorieta | 2,310 | 272 |
| Tubb | 3,016 | -434 |
| Rustler | — | |
| Toborg | — |
10 TOPS · FIRST 8
Price, Mary42-371-36717
12.1 KM · Mammoth Exploration LLC · Section with this well →
| Wichita-Albany | 3,958 | -1,691 |
| L. Leonard | 4,672 | -2,405 |
| Detrital | 5,014 | -2,747 |
| U. McKee | 5,230 | -2,963 |
South Cross Unit42-105-42478
12.2 KM · Occidental Permian Ltd. · Section with this well →
| Yates | 943 | 1,367 |
| Queen | 1,393 | 917 |
| San Andres | 1,881 | 429 |
| Leonard | 3,735 | -1,425 |
| Wolfcamp | 4,881 | -2,571 |
| Devonian | 4,966 | -2,656 |
| Basal Chert | 5,077 | -2,767 |
| Canyon | — |
10 TOPS · FIRST 8
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/37136270, documented in the API reference.