WELL · 42-475-34548 · DISTRICT 8
Warwink University 18-34 B #4H
Ward County · War-Wink W. (Wolfcamp) field · Horizontal
Warwink University 18-34 B #4H (API 42-475-34548) is a horizontal well in Ward County operated by Callon Petroleum Operating CO, completed December 12, 2006.
The RRC has issued 3 drilling permits between 1998 and 2018, permitted to 12,650 ft.
Completion filings report 10 formation tops, including B/Salt, Ramsey, Manzinita Marker, Brushy Canyon.
Its 2 leases have reported 1.06M barrels of oil and 1.91M mcf of gas since August 1997, last reporting in July 2026. The leases carry 11 wells, so these are lease totals, not this well alone.
Operator of record
Houston, TX · P-5 Y, filed Jul 4, 2025 · 1,234 permits on file · (713) 296-6000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Callon Petroleum Operating Co |
| Production reports | Callon Petroleum Operating Cothrough Dec 2021 |
| Latest permit | Callon Petroleum Operating CoNov 30, 2018 |
- 12,650
- total depth, ft
- 3
- permits on file
- Nov 30, 2018
- last permit issued
- Dec 12, 2006
- completed
- 1.06M
- cumulative oil, bbl
- 1.91M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 1997 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 12, 2006
- Shut in
- —
- Plugged
- —
Surface location
31.612961, -103.308441
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Ward 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 11 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Warwink University 18-34 'B' O-10-50949 | Phantom (Wolfcamp) | Apache Corporation | 4 | 5.04K | 198 | Dec 2018 – Jul 2026 |
| Warwink University 18-34 'B' O-10-35475 | War-Wink, W. (Wolfcamp) | Callon Petroleum Operating Co | 7 | 1.05M | 1.91M | Aug 1997 – Apr 2019 |
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.Aug 1997 → Jun 1999
- 2Prize Operating CompanyJul 1999 → Mar 2002
- 3Gruy Petroleum Management Co.Apr 2002 → Apr 2006
- 4Cimarex Energy Co. of ColoradoMay 2006 → May 2018
- 5Callon Petroleum Operating CoSep 2018 → Dec 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 847139-99 | Field transfer | Callon Petroleum Operating Co | Nov 27, 2018 | Nov 30, 2018 | Oct 11, 2006 | 11,547 |
| 626284-99 | Recompletion | Cimarex Energy Co. of Colorado | Sep 20, 2006 | Sep 22, 2006 | Oct 11, 2006 | 12,650 |
| 472840-99 | Drill | Pioneer Natural Res. USA, Inc. | Jan 30, 1998 | Jan 30, 1998 | Apr 30, 1998 | 11,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-35475 | — | — | — | — |
| — | — O-10-35475 | — | — | — | — |
| — | — O-10-50949 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,806 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| B/Salt | 5,000 | -2,194 |
| Ramsey | 5,150 | -2,344 |
| Manzinita Marker | 6,300 | -3,494 |
| Brushy Canyon | 7,500 | -4,694 |
| Bone Spring | 8,700 | -5,894 |
| T/Bone-Sprg | 8,700 | -5,894 |
| Bone Spring3RD BONE SPRING | 10,800 | -7,994 |
| T/3RD Bone Sprg Sd. | 10,800 | -7,994 |
| T 3RD Bone Spring | 10,800 | -7,994 |
| Wolfcamp | 11,020 | -8,214 |
| T/Wlfcmp | 11,650 | -8,844 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,413 | 11,546 | Perforated |
| 11,869 | 12,875 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 11.75 | 873 | 14.75 | 325 S |
| 8.625 | 5,043 | 11 | 370 S |
| 5.5 | 11,716 | 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 | Jan 16, 2019 | Dec 5, 2018 | — |
| 00 | Dec 20, 2007 | Feb 5, 2007 | — |
| 00 | Dec 11, 2007 | Jul 13, 1998 | Yes |
| 00 | Aug 12, 1998 | Jul 13, 1998 | Yes |
| 00 | Jul 31, 1998 | — | — |
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 42-475-34548 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-475-34548 → 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.
Warwink University 18-34 'B'42-475-34483
0.5 KM · Parker & Parsley Development L.P · Section with this well →
| Rustler | 823 | 1,975 |
| T/Delaware | 5,120 | -2,322 |
| Manzanita Marker | 6,340 | -3,542 |
| Brushy Canyon | 7,398 | -4,600 |
| Bone Spring | 8,700 | -5,902 |
| Bone Spring | 10,800 | -8,002 |
| Wolfcamp | 11,020 | -8,222 |
Warwink University 18-34 'B'42-475-34494
0.6 KM · Parker & Parsley Development L.P · Section with this well →
| Rustler | 812 | 2,006 |
| T/Delaware | 5,120 | -2,302 |
| Mananita Marker | 6,347 | -3,529 |
| Brushy Canyon | 7,395 | -4,577 |
| Bone Spring | 8,700 | -5,882 |
| Bone Spring | 10,800 | -7,982 |
| Bone Spring | 11,405 | -8,587 |
| Wolfcamp | 11,405 | -8,587 |
Warwink University 18-34-33 Unit42-475-37258
0.6 KM · Cimarex Energy Co. of Colorado · Section with this well →
| Cherry Canyon | 6,096 | -3,304 |
| Bone Spring | 8,592 | -5,800 |
| Bone Spring | 10,907 | -8,115 |
| Wolfcamp | 11,583 | -8,791 |
| Holt | — | |
| Yates | — | |
| Tubb | — | |
| Seven Rivers | — |
14 TOPS · FIRST 8
War Wink University 18-34-3342-475-38354
0.8 KM · Callon Petroleum Operating Co · Section with this well →
| Rustler | 825 | |
| Delaware | 5,176 | |
| Yates | — | |
| Capitan | — | |
| Clear Fork | — | |
| Glorieta | — | |
| Holt | — | |
| Queen | — |
10 TOPS · FIRST 8
Warwink University 18-34 'B'42-475-34516
0.8 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Delaware | 5,123 | |
| T/Delaware | 5,123 | |
| Manzinita | 6,322 | |
| T/Manzinita | 6,322 | |
| T/Brushy Canyon | 7,368 | |
| Brushy Canyon | 7,368 | |
| T/Bone Spgs | 8,800 | |
| Bone Spring | 8,800 |
10 TOPS · FIRST 8
UL 18 33-32F42-475-38852
1.0 KM · Apache Corporation · Section with this well →
| Delaware | 5,166 | -2,345 |
| Cherry Canyon | 6,105 | -3,284 |
| Brushy Canyon | 7,528 | -4,707 |
| Bone Spring | 8,437 | -5,616 |
| Bone Spring | 10,149 | -7,328 |
| Bone Spring | 10,525 | -7,704 |
| Wolfcamp | 11,612 | -8,791 |
| Yates | — |
10 TOPS · FIRST 8
UL 18 33-32E42-475-38851
1.0 KM · Apache Corporation · Section with this well →
| Delaware | 5,174 | -2,353 |
| Queen | — | |
| Capitan | — | |
| Clear Fork | — | |
| Glorieta | — | |
| Holt | — | |
| Rustler | — | |
| San Andres | — |
10 TOPS · FIRST 8
UL 18 33-32C42-475-38849
1.0 KM · Apache Corporation · Section with this well →
| Cherry Canyon | 6,125 | -3,304 |
| Brushy Canyon | 7,531 | -4,710 |
| Bone Spring | 8,440 | -5,619 |
| Bone Spring | 10,137 | -7,316 |
| Bone Spring | 10,558 | -7,737 |
| Clear Fork | — | |
| Wichita-Albany | — | |
| 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/47534548, documented in the API reference.