WELL · 42-103-34231 · DISTRICT 8
Block 31 Unit #S 12U
Crane County · Block 31 (Penn. 7620) field · Producing · Vertical
Block 31 Unit #S 12U (API 42-103-34231) is a well in Crane County operated by Hilcorp Energy Company, completed December 21, 2017 and listed as producing on the RRC schedule.
The RRC has issued 2 drilling permits (amended twice) between 1993 and 2017, permitted to 9,400 ft.
It was permitted by Oxy USA Inc. and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 8 formation tops, including Cisco, Canyon, Strawn, Atoka.
Its 2 leases have reported 15.7M barrels of oil and 974M mcf of gas since January 1993, last reporting in July 2026. The leases carry 358 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by OXY USA Inc.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Mar 26, 2026 · 3,453 permits on file · (713) 209-2411
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hilcorp Energy Company |
| Production reports | OXY USA Inc.through Apr 2026 |
| Latest permit | OXY USA Inc.Dec 11, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,400
- total depth, ft
- 4
- permits on file
- Dec 11, 2017
- last permit issued
- Dec 21, 2017
- completed
- 15.7M
- cumulative oil, bbl
- 974M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 21, 2017
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
31.472596, -102.438543
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Crane County.
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 358 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Block 31 Unit O-10-442 | Block 31 (Devonian) | OXY USA EOR, LLC | 330 | 15.2M | 971M | Jan 1993 – Jul 2026 |
| Block 31 Unit O-10-51135 | Block 31 (Penn. 7620) | Hilcorp Energy Company | 28 | 562K | 2.82M | Dec 2017 – Jul 2026 |
Gas, mcf lease total
Last 12 months 4,496,947 · prior 12 5,585,353(-19%)
Oil, barrels lease total
Last 12 months 64,837 · prior 12 93,974(-31%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Arco Oil & Gas Co.Jan 1993 → May 1994
- 2Arco PermianJun 1994 → Dec 2001
- 3BP America Production CompanyJan 2002 → Oct 2010
- 4OXY USA Inc.Nov 2010 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 833860-97 | Recompletion | OXY USA Inc. | Feb 25, 2019 | Dec 11, 2017 | Jan 20, 2017 | 9,300 |
| 833860-98 | Recompletion | OXY USA Inc. | Mar 8, 2018 | Dec 11, 2017 | Jan 20, 2018 | 9,300 |
| 833860-99 | Recompletion | OXY USA Inc. | Dec 5, 2017 | Dec 11, 2017 | — | 9,300 |
| 412880-99 | Drill | Arco Oil & Gas Co. | Jun 16, 1993 | Jun 17, 1993 | Jul 20, 1993 | 9,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-442 | — | — | — | — |
| — | — O-10-51135 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,574 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,444 | 7,514 | Perforated |
| 8,782 | 9,074 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 802 | 17.5 | 650 S |
| 8.625 | 3,600 | 11 | 1,250 S |
| 5.5 | 9,300 | 7.875 | 1,250 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 | Mar 7, 2019 | Aug 8, 2018 | — |
| 00 | Jan 27, 1994 | Dec 1, 1993 | Yes |
| 00 | Dec 20, 1993 | — | — |
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 42-103-34231 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-103-34231 → 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 neighbours, subsea-aligned so they line up regardless of surface terrain.
Block 31 Unit42-103-32080
0.2 KM · OXY USA Inc. · Section with this well →
| Cicso | 7,167 | -4,590 |
| Strawn | 7,527 | -4,950 |
| Morrow | 7,757 | -5,180 |
Block 31 Unit42-103-33995
0.5 KM · OXY USA Inc. · Section with this well →
| Canyon | 7,411 | -4,824 |
| Strawn | 7,566 | -4,979 |
| Atoka | 7,677 | -5,090 |
| Barnett | 7,735 | -5,148 |
| Woodford | 8,140 | -5,553 |
| Mississippian | 8,210 | -5,623 |
| Devonian | 8,277 | -5,690 |
| Devonian | 8,300 | -5,713 |
Block 31 Unit42-103-32936
0.5 KM · OXY USA Inc. · Section with this well →
| Grayburg | 2,976 | -395 |
| Wolfcamp | 6,880 | -4,299 |
| Cisco | 7,211 | -4,630 |
| Canyon | 7,474 | -4,893 |
| Strawn | 7,640 | -5,059 |
| Atoka | 7,751 | -5,170 |
| Barnett | 7,889 | -5,308 |
Block 31 Unit42-103-32652
0.5 KM · OXY USA Inc. · Section with this well →
| Grayburg | 2,975 | -391 |
| Glorieta | 4,185 | -1,601 |
| Glorieta | 4,185 | -1,601 |
| Tubb | 5,020 | -2,436 |
| Pennsylvanian | 7,208 | -4,624 |
| Barnett | 7,900 | -5,316 |
| Devonian | 8,464 | -5,880 |
Block 31 Unit42-103-33943
0.6 KM · OXY USA Inc. · Section with this well →
| Canyon | 7,350 | -4,763 |
| Strawn | 7,534 | -4,947 |
| Atoka | 7,647 | -5,060 |
| Barnett | 7,764 | -5,177 |
| Barnett | 7,772 | -5,185 |
| Mississippian | 8,062 | -5,475 |
| Woodford | 8,080 | -5,493 |
| Devonian | 8,257 | -5,670 |
Block 31 Unit42-103-32572
0.8 KM · OXY USA Inc. · Section with this well →
| Wolfcamp | 6,894 | -4,321 |
| Cisco | 7,214 | -4,641 |
| Canyon | 7,517 | -4,944 |
| Strawn | 7,694 | -5,121 |
| Atoka | 7,805 | -5,232 |
| Barnett | 7,960 | -5,387 |
Block 31 Unit42-103-32039
0.8 KM · OXY USA Inc. · Section with this well →
| Wolfcamp | 6,761 | -4,185 |
| Cisco | 7,131 | -4,555 |
| Canyon | 7,349 | -4,773 |
| Strawn | 7,506 | -4,930 |
| Barnett | 7,529 | -4,953 |
| Atoka | 7,609 | -5,033 |
Block 31 Unit42-103-33583
1.0 KM · OXY USA Inc. · Section with this well →
| Wolfcamp | 6,879 | -4,299 |
| Pennsylvanian | 7,194 | -4,614 |
| Cisco | 7,390 | -4,810 |
| Atoka | 7,740 | -5,160 |
| Barnett | 7,797 | -5,217 |
| Woodford | 8,120 | -5,540 |
| Devonian | 8,326 | -5,746 |
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/10334231, documented in the API reference.