TEXAS · WELLS · REAGAN COUNTY · API 42-383-32938 · DISTRICT 6E
Bullhead #31
Reagan County · Spraberry (Trend Area) field · Shut In · Vertical
Bullhead #31 (API 42-383-32938) is a well in Reagan County operated by Discovery Natural Resources LLC, completed June 1, 1984 and listed as shut in on the RRC schedule, shut in February 1, 2019.
The RRC has issued one drilling permit, issued February 14, 1984, permitted to 6,900 ft.
It was permitted by Cox, John L. and has since transferred to Discovery Natural Resources LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Santa Rosa, Spraberry, Dean.
Its 2 leases have reported 8.58M barrels of oil and 60.4M mcf of gas since January 1993, last reporting volume in April 2026. The leases carry 179 wells, so these are lease totals, not this well alone.
Operator of record
Discovery Natural Resources LLC
Permitted by Cox, John L.; the EWA schedule now lists a different operator.
- Based in
- Denver, CO
- P-5 status
- Active (A)
- P-5 last filed
- Jan 12, 2026
- Permits on file
- 452
- 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 | Cox, John L.Feb 14, 1984 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,900
- total depth, ft
- 1
- permits on file
- Feb 14, 1984
- last permit issued
- Jun 1, 1984
- completed
- 8.58M
- cumulative oil, bbl
- 60.4M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 1, 1984
- Shut in
- Feb 1, 2019
- 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 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 – Apr 2026 |
| Rocker B -M- O-9-4855 | Spraberry (Trend Area) | Discovery Natural Resources LLC | 47 | 1.1M | 6.21M | Jan 1993 – Oct 2018 |
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 |
|---|---|---|---|---|---|---|
| 229442-99 | Drill | Cox, John L. | Feb 10, 1984 | Feb 14, 1984 | Mar 24, 1984 | 7,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 1, 1984 | Bullhead O-9-20070 | Spraberry (Trend Area) | Discovery Natural Resources LLC | Shut In · shut in Feb 1, 2019 | 6,900 |
| Jun 1, 1984 | Rocker B -M- O-9-4855 | Spraberry (Trend Area) | Discovery Natural Resources LLC | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,495 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 600 | 1,895 |
| SpraberryUPPER SPRABERRY | 5,270 | -2,775 |
| SpraberryLOWER SPRABERRY | 5,870 | -3,375 |
| Dean | 6,700 | -4,205 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,273 | 5,291 | Perforated |
| 5,878 | 6,268 | Perforated |
| 6,702 | 6,878 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 639 | 12.25 | 450 S |
| 4.5 | 6,900 | 7.875 | 1,000 sx |
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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Dec 13, 2018 | Jun 8, 1984 | — |
| 00 | Jun 29, 1984 | Jun 8, 1984 | — |
| 00 | Jun 21, 1984 | Jun 8, 1984 | — |
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 42-383-32938 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-383-32938 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it. The University Lands library has no per-well link: then paste it into its 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/38332938, documented in the API reference.