WELL · 42-325-32624 · DISTRICT 1
Mayhew Guy #10
Medina County · Chicon Lake field · Producing · Vertical
Mayhew Guy #10 (API 42-325-32624) is a well in Medina County operated by Calfas Cattle & Oil LLC, completed June 26, 1983 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 14, 1983, permitted to 500 ft.
It was permitted by Mayhew, Rex and has since transferred to Calfas Cattle & Oil LLC on the wellbore schedule.
Its lease has reported 7.32K barrels of oil and 27 mcf of gas since January 1993, last reporting in July 2026. The lease carries 21 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Mayhew, Rex; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed Jul 4, 2026 · (210) 244-3337
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Calfas Cattle & Oil LLC |
| Production reports | Calfas Cattle & Oil, LLCthrough Apr 2026 |
| Latest permit | Mayhew, RexJun 14, 1983 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 500
- total depth, ft
- 1
- permits on file
- Jun 14, 1983
- last permit issued
- Jun 26, 1983
- completed
- 7.32K
- cumulative oil, bbl
- 27
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 26, 1983
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 21 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mayhew, Guy O-1-2188 | Chicon Lake | Calfas Cattle & Oil, LLC | 21 | 7.32K | 27 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 355 · prior 12 358(-1%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Mayhew, RexJan 1993 → Aug 1996
- 2E.A.T.E. OperatingFeb 1997 → Aug 1997
- 3More Texas OilSep 1997 → Dec 2007
- 4Ramirez, Robert A.Mar 1998 → Jun 1998
- 5Civron Petroleum Res., LLCApr 2009 → Dec 2022
- 6Civco Operating LLCMay 2012 → Dec 2018
- 7Calfas Cattle & Oil, LLCJan 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 198146-99 | Drill | Mayhew, Rex | Jun 14, 1983 | Jun 14, 1983 | — | 500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-2188 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 461 | 468 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 1.25 | 462 | — | — |
| 4.5 | 468 | 6.75 | 40 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 12, 1984 | Aug 29, 1983 | — |
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 42-325-32624 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-325-32624 → 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/32532624, documented in the API reference.