WELL · 42-103-34108 · DISTRICT 8
McKnight M. B. -A- #12
Crane County · Sand Hills (McKnight) field · Vertical
Mcknight M. B. -A- #12 (API 42-103-34108) is a plugged well in Crane County, plugged May 23, 1995, last operated by Heifer Production Company LLC.
The RRC has issued one drilling permit, issued September 25, 1990, permitted to 3,600 ft.
It was permitted by Alps Oil Company and has since transferred to Heifer Production Company LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Judkins, Intermediate.
Its lease has reported 130K barrels of oil and 412K mcf of gas since January 1993, last reporting in July 2026. The lease carries 12 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Alps Oil Company; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Sep 4, 2025 · (432) 755-1593
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Heifer Production Company LLC |
| Production reports | Heifer Production Company LLCthrough Nov 2024 |
| Latest permit | Alps Oil CompanySep 25, 1990 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,600
- total depth, ft
- 1
- permits on file
- Sep 25, 1990
- last permit issued
- Oct 24, 1990
- completed
- 130K
- cumulative oil, bbl
- 412K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 24, 1990
- Shut in
- —
- Plugged
- May 23, 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 12 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| McKnight, M. B. -A- O-10-8786 | Sand Hills (McKnight) | Heifer Production Company LLC | 12 | 130K | 412K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 0 · prior 12 246(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Alps Oil CompanyJan 1993 → Aug 1999
- 2Guadalupe Properties, LLCSep 1999 → Mar 2013
- 3N & O Oil Co.Apr 2013 → Mar 2016
- 47S Oil & Gas, LLCJul 2016 → Jun 2017
- 5Arch Oil & Gas, LLCNov 2017 → Apr 2020
- 6Heifer Production Company LLCDec 2021 → Nov 2024
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 378466-99 | Drill | Alps Oil Company | Sep 24, 1990 | Sep 25, 1990 | Oct 17, 1990 | 3,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-8786 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,679 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Judkins | 2,916 | -237 |
| Intermediate | 3,200 | -521 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,214 | 3,387 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 40 | 17 | — |
| 8.625 | 586 | 12.25 | 350 S |
| 5.5 | 3,424 | 7.875 | 675 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 | Dec 6, 1990 | Oct 31, 1990 | Yes |
| 00 | Nov 15, 1990 | — | — |
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 42-103-34108 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-103-34108 → 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/10334108, documented in the API reference.