WELL · 42-173-38739 · DISTRICT 8
Bigby South 10-15D #4H
Glasscock County · Spraberry (Trend Area) field · Producing · Horizontal
Bigby South 10-15d #4H (API 42-173-38739) is a horizontal well in Glasscock County operated by Pioneer Natural Res. USA Inc., completed May 15, 2023 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued June 13, 2022, permitted to 9,200 ft.
Completion filings report 10 formation tops, including Santa Rosa, Rustler, Yates, Seven Rivers.
Its lease has reported 120K barrels of oil and 865K mcf of gas since March 2023, last reporting in July 2026.
Operator of record
Spring, TX · P-5 Y, filed May 4, 2026 · 15,619 permits on file · (972) 598-8150
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 13, 2022 |
- 9,200
- total depth, ft
- 2
- permits on file
- Jun 13, 2022
- last permit issued
- May 15, 2023
- completed
- 120K
- cumulative oil, bbl
- 865K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2023 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 15, 2023
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
31.801859, -101.718046
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Glasscock 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 |
|---|---|---|---|---|---|---|
| Bigby South 10-15D O-10-59056 | Spraberry (Trend Area) | Pioneer Natural Res. USA, Inc. | 1 | 120K | 865K | Mar 2023 – Jul 2026 |
Gas, mcf lease total
Last 12 months 229,423 · prior 12 282,263(-19%)
Oil, barrels lease total
Last 12 months 14,978 · prior 12 26,536(-44%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pioneer Natural Res. USA, Inc.May 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 879834-98 | Drill | Pioneer Natural Res. USA, Inc. | Nov 4, 2022 | Jun 13, 2022 | Jan 12, 2023 | 9,200 |
| 879834-99 | Drill | Pioneer Natural Res. USA, Inc. | May 5, 2022 | Jun 13, 2022 | — | 8,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-59056 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,661 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 806 | 1,855 |
| Rustler | 1,372 | 1,289 |
| Yates | 2,193 | 468 |
| Seven Rivers | 2,449 | 212 |
| Queen | 3,092 | -431 |
| Grayburg | 3,550 | -889 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 3,724 | -1,063 |
| Clear ForkCLEARFORK | 5,680 | -3,019 |
| Spraberry | 6,817 | -4,156 |
| Glorieta | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,136 | 16,144 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,234 | 17.5 | 1,280 S |
| 9.625 | 5,965 | 12.25 | 1,505 S |
| 5.5 | 16,170 | 6.75 | 1,115 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 | Aug 25, 2023 | Jul 17, 2023 | — |
| 00 | Jun 14, 2023 | Apr 26, 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 42-173-38739 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-38739 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). 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.
Bigby South a 10-1542-173-38736
0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 806 | 1,855 |
| Rustler | 1,355 | 1,306 |
| Yates | 2,199 | 462 |
| Seven Rivers | 2,456 | 205 |
| Queen | 3,100 | -439 |
| Grayburg | 3,563 | -902 |
| San Andres | 3,739 | -1,078 |
| Clear Fork | 5,684 | -3,023 |
10 TOPS · FIRST 8
Bigby South B 10-1542-173-38737
0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 806 | 1,855 |
| Rustler | 1,351 | 1,310 |
| Yates | 2,199 | 462 |
| Seven Rivers | 2,459 | 202 |
| Queen | 3,094 | -433 |
| Grayburg | 3,559 | -898 |
| San Andres | 3,735 | -1,074 |
| Clear Fork | 5,670 | -3,009 |
10 TOPS · FIRST 8
Bigby South a 10-1542-173-38735
0.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 806 | 1,855 |
| Rustler | 1,358 | 1,303 |
| Yates | 2,194 | 467 |
| Seven Rivers | 2,454 | 207 |
| Queen | 3,091 | -430 |
| Grayburg | 3,556 | -895 |
| San Andres | 3,727 | -1,066 |
| Clear Fork | 5,692 | -3,031 |
10 TOPS · FIRST 8
Bigby North a 10-342-173-38302
0.2 KM · DE3 Operating LLC · Section with this well →
| Santa Rosa | 1,000 | 1,624 |
| Rustler | 1,358 | 1,266 |
| Yates | 2,193 | 431 |
| Seven Rivers | 2,445 | 179 |
| Glorieta | 2,450 | 174 |
| Queen | 3,127 | -503 |
| Grayburg | 3,627 | -1,003 |
| San Andres | 3,740 | -1,116 |
10 TOPS · FIRST 8
Bigby North a 10-342-173-38303
0.2 KM · DE3 Operating LLC · Section with this well →
| Santa Rosa | 1,000 | 1,624 |
| Rustler | 1,369 | 1,255 |
| Yates | 2,191 | 433 |
| Seven Rivers | 2,430 | 194 |
| Glorieta | 2,450 | 174 |
| Queen | 3,127 | -503 |
| Grayburg | 3,625 | -1,001 |
| San Andres | 3,734 | -1,110 |
10 TOPS · FIRST 8
Bigby North B 10-342-173-38304
0.3 KM · DE3 Operating LLC · Section with this well →
| Santa Rosa | 1,000 | 1,624 |
| Rustler | 1,349 | 1,275 |
| Yates | 2,191 | 433 |
| Seven Rivers | 2,443 | 181 |
| Glorieta | 2,450 | 174 |
| Queen | 3,125 | -501 |
| Grayburg | 3,625 | -1,001 |
| San Andres | 3,734 | -1,110 |
10 TOPS · FIRST 8
Bigby North C 10-342-173-38305
0.3 KM · DE3 Operating LLC · Section with this well →
| Santa Rosa | 1,000 | 1,624 |
| Rustler | 1,352 | 1,272 |
| Yates | 2,191 | 433 |
| Seven Rivers | 2,447 | 177 |
| Glorieta | 2,450 | 174 |
| Queen | 3,127 | -503 |
| Grayburg | 3,629 | -1,005 |
| San Andres | 3,734 | -1,110 |
10 TOPS · FIRST 8
Bigby North C 10-342-173-38306
0.4 KM · DE3 Operating LLC · Section with this well →
| Santa Rosa | 1,000 | 1,622 |
| Rustler | 1,347 | 1,275 |
| Yates | 2,183 | 439 |
| Seven Rivers | 2,443 | 179 |
| Glorieta | 2,450 | 172 |
| Queen | 3,123 | -501 |
| Grayburg | 3,619 | -997 |
| San Andres | 3,728 | -1,106 |
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/17338739, documented in the API reference.