WELL · 42-317-43561 · DISTRICT 8
Welch-Cox W39J #210H
Martin County · Spraberry (Trend Area) field · Producing · Horizontal
Welch-Cox W39j #210H (API 42-317-43561) is a horizontal well in Martin County operated by Pioneer Natural Res. USA Inc., completed January 29, 2023 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 3, 2021, permitted to 9,467 ft.
Completion filings report 10 formation tops, including Santa Rosa, Yates, Queen, Grayburg.
Its lease has reported 322K barrels of oil and 917K mcf of gas since September 2022, last reporting in July 2026.
Operator of record
- Based in
- Spring, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jul 8, 2026
- Permits on file
- 15,628
- Phone
- (972) 444-4001
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Pioneer Natural Res. USA Inc. |
| Production reports | Pioneer Natural Res. USA, Inc.through Apr 2026 |
| Latest permit | Pioneer Natural Res. USA, Inc.Jun 3, 2021 |
- 9,467
- total depth, ft
- 1
- permits on file
- Jun 3, 2021
- last permit issued
- Jan 29, 2023
- completed
- 322K
- cumulative oil, bbl
- 917K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2022 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 29, 2023
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
32.259091, -101.946624
Permit surface location from the RRC GIS record, in Martin 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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Welch-Cox W39J O-10-58702 | Spraberry (Trend Area) | Pioneer Natural Res. USA, Inc. | 1 | 322K | 917K | Sep 2022 – Jul 2026 |
Oil, barrels lease total
Last 12 months 34,680 · prior 12 71,816(-52%)
Gas, mcf lease total
Last 12 months 226,286 · prior 12 334,828(-32%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pioneer Natural Res. USA, Inc.Jan 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 869617-99 | Drill | Pioneer Natural Res. USA, Inc. | May 5, 2021 | Jun 3, 2021 | Jul 7, 2022 | 10,606 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 29, 2023 | Welch-Cox W39J O-10-58702 | Spraberry (Trend Area) | Pioneer Natural Res. USA Inc. | Producing | 9,467 |
Formation tops
As filed on W-2/G-1. Subsea from 2,836 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 1,266 | 1,570 |
| Yates | 2,605 | 231 |
| Queen | 3,474 | -638 |
| Grayburg | 3,924 | -1,088 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 4,130 | -1,294 |
| Spraberry | 7,542 | -4,706 |
| Dean | 8,850 | -6,014 |
| Wolfcamp | 9,061 | -6,225 |
| Cisco | — | — |
| Pennsylvanian | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,581 | 19,660 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,714 | 17.5 | 1,750 S |
| 9.625 | 5,626 | 12.25 | 1,377 S |
| 5.5 | 19,685 | 6.75 | 1,141 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 | Jun 5, 2023 | Apr 12, 2023 | — |
| 00 | Apr 6, 2023 | Feb 6, 2023 | 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 42-317-43561 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-43561 → 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.
Welch-Cox W39I42-317-43558
0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,266 | 1,570 |
| Yates | 2,608 | 228 |
| Queen | 3,472 | -636 |
| Grayburg | 3,947 | -1,111 |
| San Andres | 4,158 | -1,322 |
| Spraberry | 7,546 | -4,710 |
| Dean | 8,848 | -6,012 |
| Wolfcamp | 9,060 | -6,224 |
10 TOPS · FIRST 8
Welch-Cox W39H42-317-43563
0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,266 | 1,570 |
| Yates | 2,608 | 228 |
| Queen | 3,469 | -633 |
| Grayburg | 3,921 | -1,085 |
| San Andres | 4,128 | -1,292 |
| Spraberry | 7,548 | -4,712 |
| Dean | 8,852 | -6,016 |
| Wolfcamp | 9,060 | -6,224 |
10 TOPS · FIRST 8
Welch-Cox W39G42-317-43545
0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,266 | 1,570 |
| Yates | 2,608 | 228 |
| Queen | 3,472 | -636 |
| Grayburg | 3,924 | -1,088 |
| San Andres | 4,128 | -1,292 |
| Spraberry | 7,553 | -4,717 |
| Dean | 8,855 | -6,019 |
| Wolfcamp | 9,067 | -6,231 |
10 TOPS · FIRST 8
Welch-Cox W39F42-317-43543
0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,266 | 1,570 |
| Yates | 2,609 | 227 |
| Queen | 3,470 | -634 |
| Grayburg | 3,920 | -1,084 |
| San Andres | 4,130 | -1,294 |
| Spraberry | 7,558 | -4,722 |
| Dean | 8,859 | -6,023 |
| Wolfcamp | 9,069 | -6,233 |
10 TOPS · FIRST 8
Welch-Cox W39P42-317-43559
0.1 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,266 | 1,570 |
| Yates | 2,616 | 220 |
| Queen | 3,482 | -646 |
| Grayburg | 3,953 | -1,117 |
| San Andres | 4,154 | -1,318 |
| Spraberry | 7,548 | -4,712 |
| Cisco | — | |
| Wolfcamp | — |
10 TOPS · FIRST 8
Welch-Cox W39O42-317-43557
0.1 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,266 | 1,570 |
| Yates | 2,617 | 219 |
| Queen | 3,477 | -641 |
| Grayburg | 3,951 | -1,115 |
| San Andres | 4,144 | -1,308 |
| Spraberry | 7,548 | -4,712 |
| Pennsylvanian | — | |
| Wolfcamp | — |
11 TOPS · FIRST 8
Welch-Cox W39N42-317-43556
0.1 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,266 | 1,570 |
| Yates | 2,619 | 217 |
| Queen | 3,481 | -645 |
| Grayburg | 3,953 | -1,117 |
| San Andres | 4,146 | -1,310 |
| Spraberry | 7,557 | -4,721 |
| Pennsylvanian | — | |
| Precambrian (Undifferentiated) | — |
12 TOPS · FIRST 8
Welch-Cox W39M42-317-43544
0.1 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,266 | 1,570 |
| Yates | 2,617 | 219 |
| Queen | 3,480 | -644 |
| Grayburg | 3,968 | -1,132 |
| San Andres | 4,143 | -1,307 |
| Spraberry | 7,556 | -4,720 |
| Cisco | — | |
| Wolfcamp | — |
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/31743561, documented in the API reference.