WELL · 42-461-40943 · DISTRICT 7
Black Dog 4231 A #1HM
Upton County · Spraberry (Trend Area) field · Producing · Horizontal
Black Dog 4231 A #1HM (API 42-461-40943) is a horizontal well in Upton County operated by Apache Corporation, completed May 19, 2019 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 5, 2018, permitted to 9,274 ft.
Completion filings report 10 formation tops, including Yates, Grayburg, San Andres, Clear Fork.
Its lease has reported 941K barrels of oil and 3.32M mcf of gas since May 2019, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Dec 3, 2025
- Permits on file
- 9,756
- Phone
- (713) 954-5500
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Apache Corporation |
| Production reports | Apache Corporationthrough Apr 2026 |
| Latest permit | Apache CorporationSep 5, 2018 |
- 9,274
- total depth, ft
- 1
- permits on file
- Sep 5, 2018
- last permit issued
- May 19, 2019
- completed
- 941K
- cumulative oil, bbl
- 3.32M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2019 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 19, 2019
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
31.559086, -101.891371
Permit surface location from the RRC GIS record, in Upton 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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Black Dog 4231 A O-9-20248 | Spraberry (Trend Area) | Apache Corporation | 2 | 941K | 3.32M | May 2019 – Jul 2026 |
Gas, mcf lease total
Last 12 months 156,467 · prior 12 295,773(-47%)
Oil, barrels lease total
Last 12 months 32,169 · prior 12 44,591(-28%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Apache CorporationMay 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 843256-99 | Drill | Apache Corporation | Aug 7, 2018 | Sep 5, 2018 | Sep 29, 2018 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 19, 2019 | Black Dog 4231 A O-9-20248 | Spraberry (Trend Area) | Apache Corporation | Producing | 9,274 |
Formation tops
As filed on W-2/G-1. Subsea from 2,746 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,462 | 284 |
| Grayburg | 4,105 | -1,359 |
| San AndresSAN ANDRES - SALTWATER FLOW | 4,184 | -1,438 |
| Clear ForkCLEARFORK | 6,372 | -3,626 |
| Spraberry | 7,240 | -4,494 |
| Wolfcamp | 8,831 | -6,085 |
| Devonian | — | — |
| Ellenburger | — | — |
| Fusselman | — | — |
| Strawn | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,600 | 20,021 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 490 | 17.5 | 500 S |
| 9.625 | 8,586 | 12.25 | 900 S |
| 5.5 | 20,110 | 8.5 | 3,210 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 | Nov 5, 2019 | Jun 19, 2019 | Yes |
| 00 | May 20, 2019 | May 10, 2019 | 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 42-461-40943 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-40943 → 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.
Black Dog 4231 A42-461-40944
0.0 KM · Apache Corporation · Section with this well →
| Yates | 2,462 | 284 |
| Grayburg | 4,106 | -1,360 |
| San Andres | 4,181 | -1,435 |
| Spraberry | 7,241 | -4,495 |
| Wolfcamp | 8,829 | -6,083 |
| Devonian | — | |
| Strawn | — | |
| Fusselman | — |
9 TOPS · FIRST 8
Black Dog 4231 B42-461-40945
0.0 KM · Apache Corporation · Section with this well →
| Yates | 2,461 | 285 |
| Grayburg | 4,106 | -1,360 |
| San Andres | 4,185 | -1,439 |
| Clear Fork | 6,372 | -3,626 |
| Spraberry | 7,241 | -4,495 |
| Wolfcamp | 8,829 | -6,083 |
| Devonian | — | |
| Ellenburger | — |
10 TOPS · FIRST 8
Black Dog 4231 C42-461-40946
0.6 KM · Apache Corporation · Section with this well →
| Yates | 2,458 | 290 |
| Grayburg | 4,124 | -1,376 |
| San Andres | 4,199 | -1,451 |
| Clear Fork | 6,377 | -3,629 |
| Spraberry | 7,243 | -4,495 |
| Wolfcamp | 8,833 | -6,085 |
| Fusselman | — | |
| Ellenburger | — |
10 TOPS · FIRST 8
Black Dog 4231 D42-461-40947
0.6 KM · Apache Corporation · Section with this well →
| Yates | 2,454 | 297 |
| Grayburg | 4,134 | -1,383 |
| San Andres | 4,210 | -1,459 |
| Clear Fork | 6,387 | -3,636 |
| Spraberry | 7,249 | -4,498 |
| Wolfcamp | 8,832 | -6,081 |
| Fusselman | — | |
| Ellenburger | — |
10 TOPS · FIRST 8
Black Dog 4231 D42-461-40948
0.6 KM · Apache Corporation · Section with this well →
| Yates | 2,454 | 294 |
| Grayburg | 4,135 | -1,387 |
| San Andres | 4,216 | -1,468 |
| Clear Fork | 6,365 | -3,617 |
| Spraberry | 7,249 | -4,501 |
| Wolfcamp | 8,836 | -6,088 |
| Ellenburger | — | |
| Strawn | — |
10 TOPS · FIRST 8
Black Dog 4231 E42-461-40949
1.1 KM · Apache Corporation · Section with this well →
| Yates | 2,460 | 291 |
| Grayburg | 4,161 | -1,410 |
| San Andres | 4,241 | -1,490 |
| Spraberry | 7,257 | -4,506 |
| Wolfcamp | 8,842 | -6,091 |
| Devonian | — | |
| Ellenburger | — | |
| Fusselman | — |
9 TOPS · FIRST 8
Black Dog 4231 E42-461-40950
1.1 KM · Apache Corporation · Section with this well →
| Yates | 2,459 | 292 |
| Grayburg | 4,166 | -1,415 |
| San Andres | 4,247 | -1,496 |
| Clear Fork | 6,389 | -3,638 |
| Spraberry | 7,262 | -4,511 |
| Wolfcamp | 8,846 | -6,095 |
| Devonian | — | |
| Ellenburger | — |
10 TOPS · FIRST 8
Black Dog 4231 F42-461-40951
1.1 KM · Apache Corporation · Section with this well →
| Yates | 2,460 | 291 |
| Grayburg | 4,170 | -1,419 |
| San Andres | 4,251 | -1,500 |
| Clear Fork | 6,388 | -3,637 |
| Spraberry | 7,265 | -4,514 |
| Wolfcamp | 8,851 | -6,100 |
| Ellenburger | — | |
| Fusselman | — |
10 TOPS · FIRST 8
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/46140943, documented in the API reference.