TEXAS · WELLS · GLASSCOCK COUNTY · API 42-173-31772 · DISTRICT 7B
Calverley J. B. Estate #4
Glasscock County · Spraberry (Trend Area) field · Producing · Vertical
Calverley J. B. Estate #4 (API 42-173-31772) is a well in Glasscock County operated by Mewbourne Oil Company, completed February 12, 2010 and listed as producing on the RRC schedule.
The RRC has issued 2 drilling permits between 1984 and 2010, permitted to 8,030 ft.
Completion filings report 3 formation tops, including San Andres, Spraberry, Wolfcamp.
Its 2 leases have reported 633K barrels of oil and 3.23M mcf of gas since January 1993, last reporting in July 2026. The leases carry 12 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Tyler, TX
- P-5 status
- Active (A)
- P-5 last filed
- May 21, 2026
- Permits on file
- 2,061
- Phone
- (903) 561-2900
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Mewbourne Oil Company |
| Production reports | Mewbourne Oil Companythrough Apr 2026 |
| Latest permit | Mewbourne Oil CompanyFeb 10, 2010 |
- 8,030
- total depth, ft
- 2
- permits on file
- Feb 10, 2010
- last permit issued
- Feb 12, 2010
- completed
- 633K
- cumulative oil, bbl
- 3.23M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 12, 2010
- Shut in
- —
- 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 12 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Calverley, J. B. Estate O-10-40015 | Spraberry (Trend Area) | Mewbourne Oil Company | 6 | 65.3K | 244K | Feb 2010 – Jul 2026 |
| Calverley, J. B., Estate O-10-20204 | Garden City, W. (Wolfcamp 7880) | Mewbourne Oil Company | 6 | 567K | 2.98M | Jan 1993 – Dec 2019 |
Gas, mcf lease total
Last 12 months 9,491 · prior 12 22,840(-58%)
Oil, barrels lease total
Last 12 months 1,010 · prior 12 1,906(-47%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Mewbourne Oil CompanyJan 1993 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 691054-99 | Recompletion | Mewbourne Oil Company | Feb 9, 2010 | Feb 10, 2010 | Dec 14, 2009 | 8,400 |
| 263130-99 | Drill | Mewbourne Oil Co. | Dec 28, 1984 | Dec 31, 1984 | Mar 2, 1985 | 8,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Feb 12, 2010 | Calverley J. B. Estate O-10-40015 | Spraberry (Trend Area) | Mewbourne Oil Company | Producing | 8,030 |
| Mar 30, 1985 | Calverley J. B. Estate O-10-20204 | Garden City W. (Wolfcamp 7880) | Mewbourne Oil Company | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,706 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 3,164 | -458 |
| SpraberryUPPER SPRABERRY | 6,056 | -3,350 |
| SpraberryUPPER SPRABERRY | 6,064 | -3,358 |
| SpraberryLOWER SPRABERRY | 6,574 | -3,868 |
| WolfcampWOLFCAMP DETRITAL | 7,830 | -5,124 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,081 | 7,658 | Perforated |
| 7,849 | 7,918 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 441 | 17.5 | 475 S |
| 8.625 | 4,367 | 11 | 1,500 S |
| 5.5 | 8,030 | 7.875 | 1,500 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 | Aug 9, 2010 | Mar 4, 2010 | Yes |
| 00 | Jul 14, 2010 | — | — |
| 00 | Apr 22, 1985 | Apr 10, 1985 | — |
| 00 | Apr 18, 1985 | — | — |
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 42-173-31772 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-31772 → 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/17331772, documented in the API reference.