WELL · 42-235-36027 · DISTRICT 7
Rock Hollow #1905UB
Irion County · Spraberry (Trend Area) field · Horizontal
Rock Hollow #1905UB (API 42-235-36027) is a horizontal well in Irion County operated by Discovery Natural Resources LLC, completed September 29, 2015.
The RRC has issued 2 drilling permits (amended twice) between 2014 and 2022, permitted to 7,800 ft.
Completion filings report 7 formation tops, including Grayburg, San Andres, Clear Fork, Spraberry.
Its lease has reported 3.04M barrels of oil and 35.2M mcf of gas since September 2011, last reporting in July 2026. The lease carries 60 wells, so these are lease totals, not this well alone.
Operator of record
Discovery Natural Resources LLC
- Based in
- Denver, CO
- P-5 status
- Active (A)
- P-5 last filed
- Jan 12, 2026
- Permits on file
- 451
- Phone
- (303) 893-5073
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Discovery Natural Resources LLC |
| Production reports | Discovery Natural Resources LLCthrough Apr 2026 |
| Latest permit | Discovery Natural Resources LLCMay 2, 2022 |
- 7,800
- total depth, ft
- 4
- permits on file
- May 2, 2022
- last permit issued
- Sep 29, 2015
- completed
- 3.04M
- cumulative oil, bbl
- 35.2M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 29, 2015
- Shut in
- —
- Plugged
- —
Surface location
31.223417, -101.238556
Permit surface location from the RRC GIS record, in Irion County.
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 60 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Rock Hollow O-9-17647 | Spraberry (Trend Area) | Discovery Natural Resources LLC | 60 | 3.04M | 35.2M | Sep 2011 – Jul 2026 |
Gas, mcf lease total
Last 12 months 2,840,796 · prior 12 2,948,244(-4%)
Oil, barrels lease total
Last 12 months 89,194 · prior 12 121,605(-27%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Fiml Natural Resources, LLCSep 2011 → Aug 2014
- 2Discovery Natural Resources LLCSep 2014 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 879533-99 | Recompletion | Discovery Natural Resources LLC | Apr 27, 2022 | May 2, 2022 | Jun 10, 2022 | 7,800 |
| 801242-97 | Drill | Discovery Natural Resources LLC | Sep 3, 2015 | Dec 23, 2014 | Sep 27, 2015 | 7,800 |
| 801242-98 | Drill | Discovery Natural Resources LLC | Apr 28, 2015 | Dec 23, 2014 | — | 7,800 |
| 801242-99 | Drill | Discovery Natural Resources LLC | Dec 4, 2014 | Dec 23, 2014 | Sep 21, 2015 | 7,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-17647 | — | — | — | — |
| — | — O-9-17647 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,606 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Grayburg | 1,688 | 918 |
| San Andres | 2,045 | 561 |
| Clear ForkCLEARFORK | 4,116 | -1,510 |
| Spraberry | 5,017 | -2,411 |
| Canyon | — | — |
| Clear ForkCLEARFORK | — | — |
| Fusselman | — | — |
| Grayburg | — | — |
| San Andres | — | — |
| Spraberry | — | — |
| Wolfcamp | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,325 | 15,135 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 920 | 17.5 | 1,220 S |
| 7 | 6,330 | 8.75 | 605 S |
| 4.5 | 15,149 | 6.125 | 900 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 | Feb 3, 2023 | Jan 12, 2023 | Yes |
| 00 | Mar 16, 2016 | Jan 26, 2016 | 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 42-235-36027 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-235-36027 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbors, subsea-aligned so they line up regardless of surface terrain.
Rock Hollow42-235-36029
0.0 KM · Discovery Natural Resources LLC · Section with this well →
| Grayburg | 1,757 | 847 |
| San Andres | 2,126 | 478 |
| Clear Fork | 4,136 | -1,532 |
| Spraberry | 5,066 | -2,462 |
| Canyon | — | |
| Wolfcamp | — | |
| Fusselman | — |
Rock Hollow42-235-36025
0.0 KM · Discovery Natural Resources LLC · Section with this well →
| Grayburg | 1,674 | 932 |
| San Andres | 2,036 | 570 |
| Clear Fork | 4,124 | -1,518 |
| Spraberry | 5,050 | -2,444 |
| Canyon | — | |
| Fusselman | — | |
| Wolfcamp | — |
Rock Hollow42-235-36024
0.0 KM · Discovery Natural Resources LLC · Section with this well →
| Grayburg | 1,764 | 841 |
| San Andres | 2,130 | 475 |
| Clear Fork | 4,301 | -1,696 |
| Spraberry | 5,069 | -2,464 |
| Canyon | — | |
| Wolfcamp | — | |
| Fusselman | — |
Woods 213-216 Alloc 0842-235-36301
2.3 KM · Sable Permian Resources Land,llc · Section with this well →
| Grayburg | 1,829 | 864 |
| San Andres | 2,029 | 664 |
| Clear Fork | 3,216 | -523 |
| Spraberry | 5,066 | -2,373 |
| Jo Mill | 5,924 | -3,231 |
| Dean | 6,418 | -3,725 |
| Wolfcamp | 6,556 | -3,863 |
| Fusselman | — |
9 TOPS · FIRST 8
Woods 213-216 Alloc 0742-235-36300
2.3 KM · Sable Permian Resources, LLC · Section with this well →
| Grayburg | 1,827 | 866 |
| San Andres | 1,993 | 700 |
| Clear Fork | 3,223 | -530 |
| Spraberry | 5,073 | -2,380 |
| Jo Mill | 5,923 | -3,230 |
| Dean | 6,413 | -3,720 |
| Wolfcamp | 6,553 | -3,860 |
| Fusselman | — |
9 TOPS · FIRST 8
Woods 213-216 Alloc 0642-235-36299
2.3 KM · Sable Permian Resources Land,llc · Section with this well →
| Grayburg | 1,761 | 932 |
| San Andres | 1,961 | 732 |
| Clear Fork | 3,221 | -528 |
| Spraberry | 5,071 | -2,378 |
| Jo Mill | 5,922 | -3,229 |
| Wolfcamp | 6,552 | -3,859 |
| Fusselman | — | |
| Canyon | — |
Woods 213-216 Alloc 0542-235-36298
2.3 KM · Sable Permian Resources Land,llc · Section with this well →
| Grayburg | 1,826 | 868 |
| San Andres | 2,026 | 668 |
| Clear Fork | 3,753 | -1,059 |
| Spraberry | 5,603 | -2,909 |
| Jo Mill | 5,923 | -3,229 |
| Dean | 6,419 | -3,725 |
| Wolfcamp | 6,553 | -3,859 |
| Canyon | — |
9 TOPS · FIRST 8
Woods 213-216 Alloc 0642-235-36357
2.3 KM · Sable Permian Resources Land,llc · Section with this well →
| San Andres | — | |
| Spraberry | — | |
| Wolfcamp | — | |
| Canyon | — | |
| Clear Fork | — | |
| Fusselman | — | |
| Grayburg | — |
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/23536027, documented in the API reference.