WELL · 42-103-35121 · DISTRICT 8
McKnight M. B. 21 #1
Crane County · Armer (Wichita-Albany) field · Vertical
Mcknight M. B. 21 #1 (API 42-103-35121) is a well in Crane County operated by Williams Oil Company, completed July 21, 2005.
The RRC has issued 2 drilling permits in 2005, permitted to 6,437 ft.
Completion filings report 6 formation tops, including Judkins, Glorieta, Clear Fork, Tubb.
Its 2 leases have reported 123K barrels of oil and 445K mcf of gas since July 2005, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Midland, TX · P-5 Y, filed Oct 4, 2025 · 177 permits on file · (432) 967-1359
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Williams Oil Company |
| Production reports | Williams Oil Companythrough Apr 2026 |
| Latest permit | Williams Oil CompanyDec 20, 2005 |
- 6,437
- total depth, ft
- 2
- permits on file
- Dec 20, 2005
- last permit issued
- Jul 21, 2005
- completed
- 123K
- cumulative oil, bbl
- 445K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2005 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jul 21, 2005
- 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; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| McKnight, M. B. 21 O-10-37660 | Armer (Tubb) | Williams Oil Company | 1 | 120K | 441K | Dec 2005 – Jul 2026 |
| McKnight, M. B. 21 O-10-37560 | Armer (Wichita-Albany) | Williams Oil Company | 1 | 3.02K | 4.16K | Jul 2005 – Mar 2006 |
Gas, mcf lease total
Last 12 months 9,545 · prior 12 12,055(-21%)
Oil, barrels lease total
Last 12 months 1,512 · prior 12 1,593(-5%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Williams Oil CompanyAug 2005 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 611164-99 | Recompletion | Williams Oil Company | Dec 16, 2005 | Dec 20, 2005 | — | 6,437 |
| 600815-99 | Drill | Williams Oil Company | May 17, 2005 | May 19, 2005 | Jun 16, 2005 | 6,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-37560 | — | — | — | — |
| — | — O-10-37660 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,704 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Judkins | 3,220 | -516 |
| Glorieta | 4,010 | -1,306 |
| Clear Fork | 4,140 | -1,436 |
| Clear ForkCLEARFORK | 4,140 | -1,436 |
| Tubb | 4,590 | -1,886 |
| Wichita-AlbanyWICHITA | 5,120 | -2,416 |
| Wolfcamp | 5,955 | -3,251 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,719 | 4,733 | Perforated |
| 5,434 | 5,444 | Perforated |
| 5,446 | 5,456 | Perforated |
| 5,473 | 5,483 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 670 | 11 | 250 S |
| 4.5 | 6,435 | 7.875 | 745 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 | Jun 27, 2006 | Jan 13, 2006 | Yes |
| 00 | Mar 15, 2006 | Aug 9, 2005 | Yes |
| 00 | Nov 18, 2005 | Aug 9, 2005 | Yes |
| 00 | Sep 26, 2005 | — | — |
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 42-103-35121 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-103-35121 → 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/10335121, documented in the API reference.