WELL · 42-003-05231 · DISTRICT 8
University 9 -B- #4
Andrews County · Vertical
University 9 -B- #4 (API 42-003-05231) is a former disposal or injection well in Andrews County, last operated by Cross Timbers Production Company; its UIC permit is no longer active.
The RRC has issued one drilling permit, issued March 11, 1989, permitted to 10,600 ft.
Its 2 leases have reported 3.56M barrels of oil and 7.45M mcf of gas since January 1993, last reporting in July 2026. The leases carry 71 wells, so these are lease totals, not this well alone.
Operator of record
Cross Timbers Production Company
Fort Worth, TX · P-5 Y, filed Oct 9, 1991 · 20 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | XTO Energy Inc.through Apr 2026 |
| Latest permit | Cross Timbers Production CompanyMar 11, 1989 |
- 10,600
- total depth, ft
- 1
- permits on file
- Mar 11, 1989
- last permit issued
- —
- completed
- 3.56M
- cumulative oil, bbl
- 7.45M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
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 71 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| University Block 9 /Penn/ Unit O-10-21413 | University Block 9 (Penn.) | XTO Energy Inc. | 70 | 3.56M | 7.45M | Jan 1993 – Jul 2026 |
| University 9 B O-10-32113 | University Block 9 (Wolfcamp) | XTO Energy Inc. | 1 | 0 | 0 | Jan 1993 – Nov 2001 |
Oil, barrels lease total
Last 12 months 17,942 · prior 12 17,194(+4%)
Gas, mcf lease total
Last 12 months 51,885 · prior 12 64,411(-19%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Cross Timbers Operating CompanyJan 1993 → May 2001
- 2XTO Energy Inc.Jun 2001 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 357145-99 | Recompletion | Cross Timbers Production Company | Mar 17, 1989 | Mar 11, 1989 | — | 10,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-21413 | — | — | — | — |
| — | — O-10-32113 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| — | 9,145 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 345 | 17.5 | 400 S |
| 9.625 | 4,500 | 12.25 | 2,500 S |
| 7.625 | 9,202 | 8.75 | 350 S |
| 7 | 9,202 | 8.75 | 350 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 | May 26, 1992 | Oct 16, 1990 | — |
| 00 | Feb 15, 1991 | Oct 16, 1990 | — |
| 00 | Jan 25, 1989 | — | — |
| 00 | Jan 12, 1984 | Aug 18, 1970 | — |
| 00 | Jan 12, 1984 | — | — |
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 42-003-05231 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-003-05231 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 275K
- bbl, all reported
- Jun 1990
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000020628 | H-1 Injection | Plugged Nov 2, 2001 | 1,200 | 3,000 | 8,413–8,480 |
MONTHLY INJECTED, BBL · H-10 · LAST 12 REPORTED MONTHS
Last 12 months 0
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/00305231, documented in the API reference.