WELL · 42-317-36457 · DISTRICT 8
University 7-31B #4
Martin County · Spraberry (Trend Area) field · Vertical
University 7-31b #4 (API 42-317-36457) is a plugged well in Martin County, plugged April 12, 2024, last operated by Diamondback E&P LLC.
The RRC has issued one drilling permit, issued December 7, 2010, permitted to 18,000 ft.
It was permitted by Chesapeake Operating, Inc. and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Clear Fork, Upr Spraberry, Lwr Spraberry, Wolfcamp.
Its lease has reported 165K barrels of oil and 654K mcf of gas since January 2009, last reporting in July 2026. The lease carries 7 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Chesapeake Operating, Inc.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 4, 2026
- Permits on file
- 5,237
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | QEP Energy Companythrough Nov 2018 |
| Latest permit | Chesapeake Operating, Inc.Dec 7, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 18,000
- total depth, ft
- 1
- permits on file
- Dec 7, 2010
- last permit issued
- Jun 18, 2011
- completed
- 165K
- cumulative oil, bbl
- 654K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2009 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 18, 2011
- Shut in
- —
- Plugged
- Apr 12, 2024
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 lease this well is completed on; they carry 7 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| University 7-31B O-10-39191 | Spraberry (Trend Area) | Diamondback E&P LLC | 7 | 165K | 654K | Jan 2009 – Jul 2026 |
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.
- 1Chesapeake Operating, Inc.Jan 2009 → Aug 2012
- 2Enervest Operating, L.L.C.Sep 2012 → Feb 2014
- 3QEP Energy CompanyMar 2014 → Nov 2018
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 706252-99 | Drill | Chesapeake Operating, Inc. | Dec 2, 2010 | Dec 7, 2010 | Mar 2, 2011 | 18,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 18, 2011 | University 7-31B O-10-39191 | Spraberry (Trend Area) | Diamondback E&P LLC | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,923 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Clear ForkCLEARFORK | 6,658 | -3,735 |
| Upr Spraberry | 8,365 | -5,442 |
| LWR Spraberry | 8,908 | -5,985 |
| Wolfcamp | 8,964 | -6,041 |
| Dean | 9,643 | -6,720 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,997 | 10,187 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,841 | 11 | 900 S |
| 5.5 | 10,300 | 7.875 | 1,750 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 | Jun 26, 2012 | Sep 21, 2011 | 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 42-317-36457 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-36457 → 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.
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/31736457, documented in the API reference.