WELL · 42-383-33271 · DISTRICT 7
Rocker B -M- #M 37
Reagan County · Spraberry (Trend Area) field · Vertical
Rocker B -M- #M 37 (API 42-383-33271) is a well in Reagan County operated by Discovery Natural Resources LLC, completed February 10, 1985.
The RRC has issued 2 drilling permits between 1984 and 2021, permitted to 8,500 ft.
Completion filings report 4 formation tops, including Santa Rosa, Spraberry, Dean, Wolfcamp.
Its 2 leases have reported 8.58M barrels of oil and 60.4M mcf of gas since January 1993, last reporting in July 2026. The leases carry 179 wells, so these are lease totals, not this well alone.
Operator of record
Discovery Natural Resources LLC
Denver, CO · P-5 Y, filed Oct 4, 2025 · 449 permits on file · (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 LLCDec 30, 2021 |
- 8,500
- total depth, ft
- 2
- permits on file
- Dec 30, 2021
- last permit issued
- Feb 10, 1985
- completed
- 8.58M
- cumulative oil, bbl
- 60.4M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 10, 1985
- Shut in
- —
- Plugged
- —
Surface location
31.308759, -101.377712
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Reagan County.
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 179 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Bullhead O-9-20070 | Spraberry (Trend Area) | Discovery Natural Resources LLC | 132 | 7.48M | 54.2M | Nov 2018 – Jul 2026 |
| Rocker B -M- O-9-4855 | Spraberry (Trend Area) | Discovery Natural Resources LLC | 47 | 1.1M | 6.21M | Jan 1993 – Jan 2019 |
Gas, mcf lease total
Last 12 months 10,311,743 · prior 12 10,722,552(-4%)
Oil, barrels lease total
Last 12 months 1,333,222 · prior 12 1,525,825(-13%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Graham Royalty, Ltd.Jan 1993 → Oct 1993
- 2Cox, John L.Nov 1993 → Sep 2003
- 3JM Cox Resources, L.P.Oct 2003 → Aug 2018
- 4Discovery Natural Resources LLCSep 2018 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 875529-99 | Recompletion | Discovery Natural Resources LLC | Dec 21, 2021 | Dec 30, 2021 | Dec 16, 2021 | 8,500 |
| 255398-99 | Drill | Cox, John L. | Oct 17, 1984 | Oct 18, 1984 | Dec 2, 1984 | 7,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-4855 | — | — | — | — |
| — | — O-9-20070 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,462 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,267 | 5,282 | Perforated |
| 5,872 | 6,254 | Perforated |
| 6,692 | 6,892 | Perforated |
| 7,190 | 7,458 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 610 | 12.25 | 500 S |
| 4.5 | 6,900 | 7.875 | 1,000 S |
| 3.5 | 7,801 | 4.5 | 25 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 | Dec 28, 2022 | Sep 19, 2022 | Yes |
| 00 | Dec 13, 2018 | Feb 21, 1985 | — |
| 00 | Feb 28, 1985 | Feb 21, 1985 | — |
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 42-383-33271 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-383-33271 → 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 neighbours, subsea-aligned so they line up regardless of surface terrain.
Rocker B "M"42-383-34157
0.9 KM · Graham Royalty, Ltd. · Section with this well →
| Spraberry | 5,248 | -2,772 |
| Spraberry | 5,700 | -3,224 |
| Spraberry | 6,238 | -3,762 |
| Dean | 6,688 | -4,212 |
| Wolfcamp | 6,798 | -4,322 |
| Wolfcamp | 7,150 | -4,674 |
| Wolfcamp | 7,498 | -5,022 |
Chili42-383-40739
2.9 KM · Discovery Natural Resources LLC · Section with this well →
| Queen | 1,891 | 590 |
| Grayburg | 2,105 | 376 |
| San Andres | 2,658 | -177 |
| Clear Fork | 3,699 | -1,218 |
| Spraberry | 5,193 | -2,712 |
| Dean | 6,564 | -4,083 |
| Wolfcamp | 6,717 | -4,236 |
| Fusselman | — |
10 TOPS · FIRST 8
Chili A42-383-40741
2.9 KM · Discovery Natural Resources LLC · Section with this well →
| Queen | 1,882 | 599 |
| Grayburg | 2,103 | 378 |
| San Andres | 2,618 | -137 |
| Clear Fork | 3,966 | -1,485 |
| Spraberry | 5,168 | -2,687 |
| Dean | 6,568 | -4,087 |
| Wolfcamp | 6,721 | -4,240 |
| Strawn | — |
10 TOPS · FIRST 8
Chili42-383-40740
2.9 KM · Discovery Natural Resources LLC · Section with this well →
| Queen | 1,891 | 590 |
| Grayburg | 2,096 | 385 |
| San Andres | 2,587 | -106 |
| Clear Fork | 3,939 | -1,458 |
| Spraberry | 5,168 | -2,687 |
| Strawn | — | |
| Fusselman | — | |
| Ellenburger | — |
Chili B42-383-41242
2.9 KM · Discovery Natural Resources LLC · Section with this well →
| Queen | 1,902 | 579 |
| Grayburg | 2,103 | 378 |
| San Andres | 2,661 | -180 |
| Clear Fork | 3,939 | -1,458 |
| Spraberry | 5,161 | -2,680 |
| Dean | 6,562 | -4,081 |
| Wolfcamp | 6,715 | -4,234 |
| Fusselman | — |
10 TOPS · FIRST 8
Rocker, B. -N-42-383-41927
3.8 KM · Discovery Natural Resources LLC · Section with this well →
| Queen | 1,981 | 546 |
| Grayburg | 2,172 | 355 |
| San Andres | 2,591 | -64 |
| Clear Fork | 4,175 | -1,648 |
| Spraberry | 5,257 | -2,730 |
| Ellenburger | — | |
| Strawn | — | |
| Fusselman | — |
Rocker, B. -N-42-383-41928
3.8 KM · Discovery Natural Resources LLC · Section with this well →
| Queen | 1,973 | 554 |
| Grayburg | 2,164 | 363 |
| San Andres | 2,596 | -69 |
| Clear Fork | 4,156 | -1,629 |
| Spraberry | 5,247 | -2,720 |
| Ellenburger | — | |
| Strawn | — | |
| Fusselman | — |
Rocker, B. -N-42-383-41929
3.8 KM · Discovery Natural Resources LLC · Section with this well →
| Queen | 1,981 | 546 |
| Grayburg | 2,172 | 355 |
| San Andres | 2,591 | -64 |
| Clear Fork | 4,175 | -1,648 |
| Spraberry | 5,257 | -2,730 |
| Strawn | — | |
| Ellenburger | — | |
| Fusselman | — |
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/38333271, documented in the API reference.