WELL · 42-461-38186 · DISTRICT 7
Ross 40 #8
Upton County · Spraberry (Trend Area) field · Shut IN · Vertical
Ross 40 #8 (API 42-461-38186) is a well in Upton County operated by Diamondback E&P LLC, completed May 7, 2013 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued June 15, 2012, permitted to 11,100 ft.
It was permitted by Apache Corporation and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Clear Fork, Dean, Wolfcamp.
Its lease has reported 329K barrels of oil and 492K mcf of gas since October 2008, last reporting in July 2026. The lease carries 8 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Apache Corporation; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 4, 2026
- Permits on file
- 5,237
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | DE IV Operating, LLCthrough Dec 2024 |
| Latest permit | Apache CorporationJun 15, 2012 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,100
- total depth, ft
- 2
- permits on file
- Jun 15, 2012
- last permit issued
- May 7, 2013
- completed
- 329K
- cumulative oil, bbl
- 492K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2008 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 7, 2013
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ross 40 O-9-16760 | Spraberry (Trend Area) | Diamondback E&P LLC | 8 | 329K | 492K | Oct 2008 – Jul 2026 |
Oil, barrels lease total
Last 12 months 0 · prior 12 1,037(-100%)
Gas, mcf lease total
Last 12 months 0 · prior 12 33(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Mariner Energy, Inc.Nov 2008 → Nov 2010
- 2Apache CorporationDec 2010 → Jan 2023
- 3DE IV Operating, LLCFeb 2023 → Dec 2024
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 742266-98 | Drill | Apache Corporation | Dec 14, 2012 | Jun 15, 2012 | — | 11,100 |
| 742266-99 | Drill | Apache Corporation | Jun 6, 2012 | Jun 15, 2012 | Apr 24, 2013 | 11,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-16760 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,803 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Clear ForkCLEARFORK | 7,300 | -4,497 |
| Dean | 9,042 | -6,239 |
| Wolfcamp | 9,226 | -6,423 |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 416 | 17.5 | 450 S |
| 8.625 | 4,953 | 11 | 160 S |
| 5.5 | 10,911 | 7.875 | 150 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 | May 17, 2017 | Apr 14, 2017 | — |
| 00 | Mar 31, 2014 | Feb 14, 2014 | Yes |
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 42-461-38186 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-38186 → 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/46138186, documented in the API reference.