WELL · 42-461-43748 · DISTRICT 9
Thomason-Halff 8A #1001H
Upton County · Horizontal
Thomason-Halff 8a #1001H (API 42-461-43748) is a permitted horizontal well in Upton County filed by Pioneer Natural Res. USA, Inc.; no completion report is on file yet.
The RRC has issued one drilling permit, issued October 5, 2026, permitted to 10,492 ft.
Operator of record
Pioneer Natural Res. USA, Inc.
Spring, TX · P-5 Y, filed May 4, 2026 · 15,619 permits on file · (972) 598-8150
SOURCE · LATEST PERMIT (NO EWA RECORD)
What each RRC source says
| Wellbore schedule | none |
| Production reports | none |
| Latest permit | Pioneer Natural Res. USA, Inc.Oct 5, 2026 |
- 10,492
- total depth, ft
- 1
- permits on file
- Oct 5, 2026
- last permit issued
- —
- completed
- —
- cumulative oil, bbl
- —
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS
Surface location
31.452020, -101.776579
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Upton County.
Only the permit record exists for this well so far, here and in the RRC's wellbore query. Completion reports, formation tops, lease production, and the scanned filings appear once the operator files a completion report, typically months after drilling. Petrora refreshes the wellbore file weekly, so a filing from the last few days may reach the RRC before it shows here. How long each source takes →
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 918268-99 | Drill | Pioneer Natural Res. USA, Inc. | Aug 28, 2026 | Oct 5, 2026 | — | 10,492 |
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well has no tops filed, so it cannot anchor a section; its neighbours can.
K-Bird 842-461-40062
0.3 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 4,100 | -1,436 |
| Spraberry | 6,500 | -3,836 |
| Wolfcamp | 8,291 | -5,627 |
| Grayburg | — | |
| Strawn | — | |
| Yates | — | |
| Devonian | — | |
| Ellenburger | — |
9 TOPS · FIRST 8
Welch Trust 8-7-E42-383-40358
0.4 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 3,670 | -1,012 |
| Clear Fork | 5,853 | -3,195 |
| Spraberry | 6,754 | -4,096 |
| Dean | 8,155 | -5,497 |
| Wolfcamp | 8,338 | -5,680 |
| Grayburg | — | |
| Queen | — | |
| Ellenburger | — |
10 TOPS · FIRST 8
Welch Trust 8-7-E42-383-40357
0.4 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 3,673 | -1,015 |
| Clear Fork | 5,854 | -3,196 |
| Spraberry | 6,756 | -4,098 |
| Dean | 8,148 | -5,490 |
| Wolfcamp | 8,332 | -5,674 |
| Strawn | — | |
| Ellenburger | — | |
| Fusselman | — |
10 TOPS · FIRST 8
Welch Trust 8-7-E42-383-40359
0.4 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 3,675 | -1,017 |
| Clear Fork | 5,855 | -3,197 |
| Spraberry | 6,756 | -4,098 |
| Dean | 8,151 | -5,493 |
| Wolfcamp | 8,332 | -5,674 |
| Strawn | — | |
| Ellenburger | — | |
| Fusselman | — |
10 TOPS · FIRST 8
Greathouse 13-12 A42-461-40803
1.3 KM · Endeavor Energy Resources L.P. · Section with this well →
| Yates | 1,000 | 1,674 |
| Grayburg | 3,806 | -1,132 |
| San Andres | 4,392 | -1,718 |
| Spraberry | 5,809 | -3,135 |
| Wolfcamp | 8,347 | -5,673 |
| Devonian | — | |
| Ellenburger | — | |
| Fusselman | — |
9 TOPS · FIRST 8
Greathouse 13-14 C42-461-40817
1.3 KM · Endeavor Energy Resources L.P. · Section with this well →
| Yates | 1,000 | 1,674 |
| Grayburg | 3,806 | -1,132 |
| San Andres | 4,392 | -1,718 |
| Spraberry | 6,790 | -4,116 |
| Wolfcamp | 8,347 | -5,673 |
| Devonian | — | |
| Ellenburger | — | |
| Fusselman | — |
9 TOPS · FIRST 8
Greathouse 13-12 D42-461-40804
1.3 KM · Endeavor Energy Resources L.P. · Section with this well →
| Yates | 1,000 | 1,674 |
| Grayburg | 3,608 | -934 |
| San Andres | 4,392 | -1,718 |
| Spraberry | 6,790 | -4,116 |
| Wolfcamp | 8,347 | -5,673 |
| Strawn | — | |
| Ellenburger | — | |
| Devonian | — |
9 TOPS · FIRST 8
Greathouse 13-12 D42-461-40855
1.3 KM · Endeavor Energy Resources L.P. · Section with this well →
| Yates | 1,000 | 1,674 |
| Grayburg | 3,806 | -1,132 |
| San Andres | 4,392 | -1,718 |
| Spraberry | 6,790 | -4,116 |
| Wolfcamp | 8,347 | -5,673 |
| Strawn | — | |
| Devonian | — | |
| Ellenburger | — |
9 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/46143748, documented in the API reference.