TEXAS · WELLS · KARNES COUNTY · API 42-255-31505 · DISTRICT 02
Wernli GU 1 #4
Karnes County · Kenedy S.W. (Wilcox 8100) field · Vertical
Wernli GU 1 #4 (API 42-255-31505) is a plugged well in Karnes County, plugged April 27, 2016, last operated by Pioneer Natural Res. USA Inc..
The RRC has issued 3 drilling permits (amended once) between 2004 and 2011, permitted to 13,600 ft.
Completion filings report 5 formation tops, including Yegua, Wilcox, Midway, Austin Chalk.
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 Feb 2012 |
| Latest permit | Pioneer Natural Res. USA, Inc.Dec 15, 2011 |
- 13,600
- total depth, ft
- 4
- permits on file
- Dec 15, 2011
- last permit issued
- Dec 1, 2011
- completed
- 0
- cumulative oil, bbl
- 147K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2005 THROUGH Jul 2016
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 1, 2011
- Shut in
- —
- Plugged
- Apr 27, 2016
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 |
|---|---|---|---|---|---|---|
| Wernli GU 1 G-2-264849 | Kenedy, S.W., (Wilcox 8100) | Pioneer Natural Res. USA, Inc. | 1 | 0 | 18.2K | Dec 2011 – Jul 2016 |
| Wernli GU #1 G-2-210229 | Kenedy, SW. (Edwards) | Pioneer Natural Res. USA, Inc. | 1 | 0 | 129K | Apr 2005 – Nov 2011 |
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.
- 1Pioneer Natural Res. USA, Inc.Apr 2005 → Feb 2012
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 729563-99 | Recompletion | Pioneer Natural Res. USA, Inc. | Dec 7, 2011 | Dec 15, 2011 | Nov 23, 2011 | 13,080 |
| 622815-99 | Recompletion | Pioneer Natural Res. USA, Inc. | Jul 18, 2006 | Jul 26, 2006 | Aug 24, 2006 | 13,080 |
| 553371-98 | Drill | Pioneer Natural Res. USA, Inc. | Dec 20, 2004 | Nov 12, 2004 | Jan 3, 2005 | 13,600 |
| 553371-99 | Drill | Pioneer Natural Res. USA, Inc. | Nov 8, 2004 | Nov 12, 2004 | — | 13,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 1, 2011 | Wernli GU 1 G-2-264849 | Kenedy S.W. (Wilcox 8100) | Pioneer Natural Res. USA Inc. | Plugged | — |
| Oct 13, 2006 | Wernli GU #1 G-2-210229 | Kenedy SW. (Edwards) | Pioneer Natural Res. USA Inc. | Plugged | — |
| Oct 13, 2006 | Wernli GU #1 G-2-210229 | Kenedy SW. (Edwards) | Pioneer Natural Res. USA Inc. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 450 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,120 | 8,130 | Perforated |
| 12,892 | 12,896 | Perforated |
| 12,908 | 12,912 | Perforated |
| 12,923 | 12,934 | Perforated |
| 12,958 | 12,962 | Perforated |
| 13,121 | 13,147 | Perforated |
| 13,176 | 13,222 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,808 | 12.25 | 1,380 S |
| 5.5 | 13,578 | 8.75 | 700 S |
| 5.5 | 13,600 | 8.75 | 700 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 | Oct 4, 2012 | Jan 18, 2012 | Yes |
| 00 | Apr 8, 2010 | Nov 15, 2006 | — |
| 00 | Mar 25, 2010 | Feb 1, 2010 | Yes |
| 00 | Nov 7, 2005 | Apr 15, 2005 | Yes |
| 00 | Aug 26, 2005 | — | — |
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 42-255-31505 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-31505 → 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/25531505, documented in the API reference.