WELL · 42-115-31758 · DISTRICT 8
JO-Mill West Unit #1
Dawson County · JO-Mill (Spraberry) field · Producing · Vertical
JO-Mill West Unit #1 (API 42-115-31758) is a well in Dawson County operated by Estancia Oil & Gas LLC, completed April 25, 1983 and listed as producing on the RRC schedule, shut in November 1, 2026.
The RRC has issued one drilling permit, issued November 15, 1982, permitted to 8,150 ft.
It was permitted by Saxon Oil Company and has since transferred to Estancia Oil & Gas LLC on the wellbore schedule.
Its 2 leases have reported 272K barrels of oil and 48.8K mcf of gas since January 1993, last reporting in July 2026. The leases carry 13 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Saxon Oil Company; the EWA schedule now lists a different operator.
- Based in
- Austin, TX
- P-5 status
- Active (A)
- P-5 last filed
- Sep 18, 2025
- Permits on file
- 37
- Phone
- (512) 328-3310
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Estancia Oil & Gas LLC |
| Production reports | Estancia Oil & Gas, LLCthrough Mar 2026 |
| Latest permit | Saxon Oil CompanyNov 15, 1982 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,150
- total depth, ft
- 1
- permits on file
- Nov 15, 1982
- last permit issued
- Apr 25, 1983
- completed
- 272K
- cumulative oil, bbl
- 48.8K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 25, 1983
- Shut in
- Nov 1, 2026
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 13 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| JO-Mill West Unit O-11-70105 | JO-Mill (Spraberry) | Estancia Oil & Gas, LLC | 12 | 251K | 37.5K | Apr 2014 – Jul 2026 |
| Stewart O-11-64328 | JO-Mill (Spraberry) | Estancia Oil & Gas, LLC | 1 | 20.3K | 11.4K | Jan 1993 – Jul 2014 |
Oil, barrels lease total
Last 12 months 19,936 · prior 12 20,332(-2%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Miresco, Inc.Jan 1993 → Mar 1994
- 2Midland Res. Oper. Co., Inc.Apr 1994 → Oct 1998
- 3Vista Resources, Inc. (A)Nov 1998 → Mar 1999
- 4Honeck Oil CompanyApr 1999 → Apr 2007
- 5Honeck Oil Company, LPMay 2007 → Dec 2010
- 6Estancia Oil & Gas, LLCJan 2011 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 177292-99 | Drill | Saxon Oil Company | Nov 15, 1982 | Nov 15, 1982 | — | 8,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 25, 1983 | JO-Mill West Unit O-11-70105 | JO-Mill (Spraberry) | Estancia Oil & Gas LLC | Producing · shut in Nov 1, 2026 | 8,150 |
| Apr 25, 1983 | Stewart O-11-64328 | JO-Mill (Spraberry) | Estancia Oil & Gas LLC | Not on Schedule | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,434 | 8,028 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 334 | 17.5 | 350 S |
| 8.625 | 3,450 | 11 | 1,060 S |
| 2.375 | 7,342 | — | — |
| 4.5 | 8,150 | 7.875 | 1,200 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 4, 2014 | Apr 28, 1983 | — |
| 00 | Jan 12, 1984 | Apr 28, 1983 | — |
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 42-115-31758 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-115-31758 → 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/11531758, documented in the API reference.