WELL · 42-115-33039 · DISTRICT 8
West Spraberry Unit #509
Dawson County · Spraberry W. (Deep Spraberry) field · Vertical
West Spraberry Unit #509 (API 42-115-33039) is a plugged well in Dawson County, plugged February 16, 2010, last operated by JO Mill Oil Company LLC.
The RRC has issued 2 drilling permits between 2000 and 2006, permitted to 11,400 ft.
It was permitted by Chevron U. S. A. Inc. and has since transferred to JO Mill Oil Company LLC on the wellbore schedule.
Completion filings report 6 formation tops, including Spraberry, Dean, Pennsylvanian, Mississippian.
Its 2 leases have reported 4.14M barrels of oil and 809K mcf of gas since December 1993, last reporting in July 2026. The leases carry 60 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Chevron U. S. A. Inc.; the EWA schedule now lists a different operator.
Fort Worth, TX · P-5 Y, filed May 4, 2026 · (682) 715-5794
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | JO Mill Oil Company LLC |
| Production reports | JO Mill Oil Company LLCthrough Apr 2026 |
| Latest permit | Chevron U. S. A. Inc.Jan 12, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,400
- total depth, ft
- 2
- permits on file
- Jan 12, 2006
- last permit issued
- Apr 20, 2006
- completed
- 4.14M
- cumulative oil, bbl
- 809K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 20, 2006
- Shut in
- —
- Plugged
- Feb 16, 2010
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 60 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| West Spraberry Unit O-11-67167 | Spraberry, W. (Deep, Spraberry) | JO Mill Oil Company LLC | 59 | 4.13M | 808K | Dec 1993 – Jul 2026 |
| Vaughn O-11-68186 | Spraberry, West (Deep, Penn.) | Chevron U. S. A. Inc. | 1 | 11.1K | 1.07K | May 2000 – Oct 2006 |
Oil, barrels lease total
Last 12 months 38,014 · prior 12 45,176(-16%)
Gas, mcf lease total
Last 12 months 0 · prior 12 0
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Texaco E & P Inc.Dec 1993 → May 2002
- 2Crow, DavidJun 2000 → Sep 2000
- 3Gifford Operating CompanyOct 2000 → Jul 2003
- 4Chevron U. S. A. Inc.Jun 2002 → Sep 2020
- 5Sojourner Drilling CorporationAug 2003 → Jan 2004
- 6JO Mill Oil Company LLCOct 2020 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 608958-99 | Recompletion | Chevron U. S. A. Inc. | Nov 3, 2005 | Jan 12, 2006 | Mar 29, 2006 | 9,000 |
| 492407-99 | Drill | Crow, David | Feb 23, 2000 | Feb 23, 2000 | Mar 2, 2000 | 11,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-67167 | — | — | — | — |
| — | — O-11-68186 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,912 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Spraberry | 6,610 | -3,698 |
| Dean | 7,768 | -4,856 |
| PennsylvanianPENN | 8,050 | -5,138 |
| MississippianLOWER MISSISSIPPIAN | 10,332 | -7,420 |
| WoodfordWOODFORD SHALE | 10,666 | -7,754 |
| Fusselman | 10,704 | -7,792 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,071 | 8,074 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 402 | 17.5 | 375 S |
| 13.375 | 402 | — | 375 S |
| 9.625 | 3,792 | 12.25 | 1,400 S |
| 9.625 | 3,792 | — | 1,400 S |
| 4.5 | 8,331 | 6.75 | 630 S |
| 4.5 | 8,331 | 8.75 | 630 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 | Oct 17, 2006 | May 26, 2006 | Yes |
| 00 | Jun 28, 2006 | — | — |
| 00 | Aug 30, 2000 | Jun 16, 2000 | — |
| 00 | Jul 5, 2000 | May 8, 2000 | Yes |
| 00 | May 26, 2000 | — | — |
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 42-115-33039 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-115-33039 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 0
- bbl, all reported
- —
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000096732 | H-1 Injection | Plugged Feb 22, 2010 | 2,500 | 3,000 | 7,100–8,200 |
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/11533039, documented in the API reference.