WELL · 42-177-31917 · DISTRICT 1
Davis Unit WSW #1
Gonzales County · First Shot (Austin Chalk) field · Water Supply · Horizontal
Davis Unit Wsw #1 (API 42-177-31917) is a horizontal well in Gonzales County operated by Permian Resources Operating LLC, completed May 24, 2017 and listed as water supply on the RRC schedule, shut in February 1, 2026.
The RRC has issued 2 drilling permits (amended twice) between 1991 and 2017, permitted to 3,361 ft.
It was permitted by Earthstone Operating, LLC and has since transferred to Permian Resources Operating LLC on the wellbore schedule.
Completion filings report 9 formation tops, including Carrizo, Reklaw, Wilcox, Midway.
Its 2 leases have reported 28.5K barrels of oil and 23.7K mcf of gas since January 1993, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permian Resources Operating LLC
Permitted by Earthstone Operating, LLC; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Nov 25, 2025
- Permits on file
- 608
- Phone
- (432) 695-4222
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil EF LLC |
| Production reports | Marathon Oil EF LLCthrough Aug 2013 |
| Latest permit | Earthstone Operating, LLCMar 21, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,361
- total depth, ft
- 4
- permits on file
- Mar 21, 2017
- last permit issued
- May 24, 2017
- completed
- 28.5K
- cumulative oil, bbl
- 23.7K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 24, 2017
- Shut in
- Feb 1, 2026
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Davis Unit WSW O-1-19113 | First Shot (Austin Chalk) | Permian Resources Operating, LLC | 1 | 0 | 0 | May 2017 – Jul 2026 |
| Robinson-Troell O-1-13349 | First Shot (Austin Chalk) | Marathon Oil EF LLC | 1 | 28.5K | 23.7K | Jan 1993 – Feb 2015 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Tiza, Inc.Jan 1993 → Jan 1993
- 2Tiza Operating CompanyFeb 1993 → Nov 1995
- 3Ames Oil Corporation of TexasDec 1995 → Apr 2004
- 4Atlas Fuel Supply, Ltd.May 2004 → May 2010
- 5Hilcorp Energy CompanyJun 2010 → Oct 2011
- 6Marathon Oil EF LLCDec 2011 → Aug 2013
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 824357-98 | Reenter | Earthstone Operating, LLC | Apr 4, 2017 | Mar 21, 2017 | Mar 31, 2017 | 3,420 |
| 824357-99 | Reenter | Earthstone Operating, LLC | Mar 10, 2017 | Mar 21, 2017 | — | 3,420 |
| 387804-98 | Drill | Marathon Oil Company | Jan 15, 1992 | May 13, 1991 | — | 9,198 |
| 387804-99 | Drill | Marathon Oil Company | May 13, 1991 | May 13, 1991 | Jun 7, 1991 | 13,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 24, 2017 | Davis Unit WSW O-1-19113 | First Shot (Austin Chalk) | Permian Resources Operating LLC | Water Supply · shut in Feb 1, 2026 | 3,361 |
| Aug 22, 1991 | Robinson-Troell O-1-13349 | First Shot (Austin Chalk) | Marathon Oil EF LLC | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 277 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,840 | 2,860 | Perforated |
| 8,750 | 11,374 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,015 | 14.75 | 645 S |
| 7 | 8,750 | 9.875 | 470 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 | Feb 13, 2018 | Sep 19, 2017 | Yes |
| 00 | Jan 23, 1992 | Sep 20, 1991 | Yes |
| 00 | Jan 16, 1992 | — | — |
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 42-177-31917 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-177-31917 → 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.
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/17731917, documented in the API reference.