OPERATORS · TEXAS · P-5 NUMBER 536910
Mayo Oil Co.
- P-5 status
- Active (A)
- P-5 last filed
- Jul 1, 2026
- Based in
- San Antonio, TX
Mayo Oil CO. has filed no drilling permits in the past 12 months; its most recent permit was issued December 29, 1992.
The RRC wellbore file lists 4 wells under its operatorship.
11 drilling permits have been issued to this operator number since 1983; its P-5 organization report was last filed July 1, 2026.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 0
- producing wells, of 4 of record
- 0
- leases it reports · 14 ever reported on
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED NOV 10, 2026
From permit to spud
FROM THE DATES ON ITS W-1 PERMITS · ALL TIME
A permit is a plan, not a well. These figures count only permits old enough to have spudded, six months and more, and read the spud, cancel, and expiry dates the RRC records on each one.
- 27%
- spud rate · 3 of 11 mature permits
- 18
- median days permit to spud · middle half 10–47
- 0
- spuds, last 180 days
- 9%
- canceled · 1 permits
- 7
- expired undrilled
- 1
- permits a year over 10 active years
Permits issued by month
LAST 60 MONTHS · BY ISSUE DATE
Last 12 months 0 · prior 12 0
Counties
Counties by permits in the last 12 months, with all-time permits and current wells of record there.
| County | 12 mo | All time | Wells | Last |
|---|---|---|---|---|
| Frio county → | — | 5 | 3 | Feb 27, 1986 |
| Tom Green county → | — | 3 | 1 | Dec 29, 1992 |
| Archer county → | — | 1 | 0 | Mar 5, 1984 |
| Duval county → | — | 1 | 0 | Oct 8, 1991 |
| Wilson county → | — | 1 | 0 | Jun 12, 1984 |
All 11 permits, searchable → · Leases it reported on → · On the map →
Formations in wells it permitted
Tops reported on completion filings for wells permitted under this operator number, including wells others run today. RRC wellbore file. About tops →
| Formation | Wells | Permitted last 3 yrs |
|---|---|---|
| Navarro | 3 | 0 |
| Austin Chalk | 3 | 0 |
| Olmos | 2 | 0 |
| Wilcox | 2 | 0 |
| Yegua | 1 | 0 |
Production by month
PDQ LEASE REPORTS · REPORTED THROUGH AUG 2026
Barrels on leases where this operator filed the production report. Lease-level by design; the latest months are revised upward as late reports arrive. From 14 leases it reported on; 4 are reported by other operators today; 10 are no longer on the schedule.How production is reported →
- 0
- bbl oil, last 12 reported months
- —
- vs the 12 months before
- 0
- mcf gas incl. casinghead, last 12
- 43.4K
- bbl oil since reporting began
12 months through Aug 2026 0 · prior 12 0
Mayo Oil Co.: Gas by month.
Beyond the permit record
RRC wellbore file
Wells of record
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 0
- permitted bbl/day, active
- 0
- bbl injected, last 12 reported months
- Sep 2025
- reported through
By county
| Wichita | 0 active | 0 bbl/d |
All 1 permits, with volumes → · On the map →
Permitted volume is a ceiling, not throughput. How to read it →
Operator of record and permit operator
A well's operator of record is the RRC's, and its permit operator is the one on its latest drilling permit; neither fills in for the other. Its wellbores of record are counted as its wells, with its live permits; a well it permitted that another operator runs, or that the RRC lists with no operator at all, is not. Each count opens the wells it counts. Transfers and operator numbers →
Permit types
Last 12 months against the prior 12, and all time. A type opens the permit history filtered to it. What the types mean →
| Type | 12 mo | Prior 12 | All time |
|---|---|---|---|
| Drill | 0 | 0 | 8 |
| Other | 0 | 0 | 1 |
| Reenter | 0 | 0 | 1 |
| Recompletion | 0 | 0 | 1 |
Fields
RRC regulatory fields with the most wells of record under this operator. The field opens its page; the count opens this operator's wells in it.
| Field | Wells | Producing |
|---|---|---|
| Big Foot West (Gas)7856250 | 2 | 0 |
| Lawson-Vietor (Strawn Lo.)52500500 | 1 | 0 |
| Pearsall (Austin Chalk)69981125 | 1 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status Active (A)
- Last filed Jul 1, 2026
- Address
- 1250 NE Loop 410 Ste 415
- San Antonio, TX 78209
- (210) 828-4610
- Officers and agents
- Mayo, Paul R. Jr. · President,treasurer
Latest permits
NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES
| Permit | Seen | Issued | Operator | County | Lease / well | Depth | API |
|---|---|---|---|---|---|---|---|
| 406990 | Dec 29, 1992 | Dec 29, 1992 | Mayo Oil Co. | Tom Green | Moss-Powell #1 | 1,100 | 45132232 |
| 400555 | Jul 2, 1992 | Jul 2, 1992 | Mayo Oil Co. | Tom Green | Dorotik #1 | 4,100 | 45132164 |
| 385479 | Nov 19, 1991 | Nov 19, 1991 | Mayo Oil Co. | Tom Green | Moss-Powell #3S | 1,100 | 45130567 |
| 392383 | Oct 8, 1991 | Oct 8, 1991 | Mayo Oil Co. | Duval | Salinas #2 | 4,500 | 13136721 |
| 298544 | Feb 27, 1986 | Feb 27, 1986 | Mayo Oil Co. | Frio | Gracey, E. J. #1 | 3,100 | 16332491 |
| 266395 | Feb 8, 1985 | Feb 8, 1985 | Mayo Oil Co. | Frio | Hoyle, Bill #1 | 3,200 | 16332407 |
| 252316 | Sep 24, 1984 | Sep 24, 1984 | Mayo Oil Co. | Frio | Brooks, J. B. #1 | 6,080 | 16332365 |
| 276072 | Jun 12, 1984 | Jun 12, 1984 | Mayo Oil Co. | Wilson | Bates, Hubert L. #2R | 6,650 | 49331732 |
| 237050 | Apr 30, 1984 | Apr 30, 1984 | Mayo Oil Co. | Frio | Labatt #1 | 5,075 | 16332224 |
| 231357 | Mar 5, 1984 | Mar 5, 1984 | Mayo Oil Co. | Archer | Meurer #1 | 3,600 | 00938163 |
| 191603 | Apr 18, 1983 | Apr 18, 1983 | Mayo Oil Co. | Frio | Labatt #1 | 5,075 | 16332224 |
| 58010 | Sep 14, 1979 | Sep 14, 1979 | Honcho International Corp. | Tom Green | Moss-Powell #2 | 7,000 | 45130525 |
About this data
Registration from the RRC P-5 organization report, refreshed weekly. Permits from the OGA049M master and daily daf420 files; wells of record from the EWA wellbore schedule; production from PDQ lease reports by the operator that filed them, through the statewide reported-through month; disposal from UIC permits and H-10 reports. Oil includes condensate from gas leases and gas includes casinghead gas from oil leases, as the RRC totals them. Summary figures are rebuilt nightly. Nothing is estimated.
Developers: this page as JSON is GET /v1/data/operators/tx/536910, documented in the API reference.