OPERATORS · RRC 925911 · P-5 STATUS Y
Williamson Oper Co
Uvalde, TX
Watch this operatorWilliamson Oper CO has filed no drilling permits in the past 12 months; its most recent permit was issued February 7, 1989.
The RRC wellbore file lists 26 wells under its operatorship (1 shut in).
4 drilling permits have been issued to this operator number since 1988; its P-5 organization report was last filed August 4, 2025.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 0
- producing wells, of 26 of record
- 29
- leases it reports
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 2026
Where
Counties by permits in the last 12 months, with all-time permits and current wells of record there.
All 4 permits, searchable → · Leases it reports → · On the map →
Formations in its completed wells
Tops reported on completion filings for wells it operates. RRC wellbore file. About tops →
| Formation | Wells | Permitted last 3 yrs |
|---|---|---|
| Navarro | 1 | 0 |
| San Miguel | 1 | 0 |
| Olmos | 1 | 0 |
| Escondido | 1 | 0 |
Production by month
PDQ LEASE REPORTS · REPORTED THROUGH APR 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. How production is reported →
- 0
- bbl oil, last 12 reported months
- —
- vs the 12 months before
- 0
- mcf gas incl. casinghead, last 12
- 15.4K
- bbl oil since reporting began
No lease production reported under this operator number in the last three years.
Beyond the permit record
RRC wellbore file
Wells of record
- 26
- on the schedule
- 0
- producing
- 1
- shut in
- 0
- injection
- 1
- temp. abandoned
- 24
- plugged
How it got them
- 1
- permitted itself
- 17
- acquired from others
- 2
- permitted, now run by others
Acquired means the well's permit names a different operator than the schedule does today. 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 | 4 |
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 |
|---|---|---|
| Pryor Ranch West (Olmos)73332500 | 3 | 0 |
| Lyles Ranch (Olmos)55960700 | 2 | 0 |
| Batesville (Bracero)6096250 | 2 | 0 |
| EL Indio N.(olmos)27979450 | 2 | 0 |
| Little Tom (San Miguel C.E.)54084800 | 2 | 0 |
| EL Indio (Olmos A-4)27976250 | 2 | 0 |
| J.A.W. (Olmos)44897500 | 1 | 0 |
| Kiefer Ranch (Navarro)49174300 | 1 | 0 |
| Lyles Ranch (Escondido)55960500 | 1 | 0 |
| Matthews Ranch (Olmos)58340500 | 1 | 0 |
| Pilosa East (2ND San Miguel)71520500 | 1 | 0 |
| Pryor East (Olmos)73322500 | 1 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Aug 4, 2025
- Gas operatorOil operator
- Address
- 825 Cherry St
- Uvalde, TX 78801
- Officers and agents
- Williamson, John A. · President
- Sheperd, Patricia · Vice President
- Williamson, Hazel · Secretary
- Ochoa, Teresa Gallaway · Treasurer
Latest permits
NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES
| Permit | Seen | Issued | Operator | County | Lease / well | Depth | API |
|---|---|---|---|---|---|---|---|
| 355215 | Feb 7, 1989 | Feb 7, 1989 | Williamson Operating Co. | Zavala | Kiefer Section 2 #1 | 2,200 | 50732239 |
| 355214 | Feb 7, 1989 | Feb 7, 1989 | Williamson Operating Co. | Zavala | Kiefer Section 4 #1 | 2,200 | 50732240 |
| 346932 | May 27, 1988 | May 27, 1988 | Williamson Operating Co. | Zavala | Matthews Agency Account #1025 | 2,400 | 50732223 |
| 344830 | Apr 15, 1988 | Apr 15, 1988 | Williamson Operating Co. | Zavala | Matthews Mineral Account #1 | 2,400 | 50732219 |
| 332495 | Jul 3, 1987 | Jul 3, 1987 | Janco Operating | Maverick | Phillips-Janco #1 | 1,700 | 32332353 |
| 329910 | May 6, 1987 | May 6, 1987 | Mesa Chica Corp. | Maverick | Stone #5702 | 1,500 | 32332348 |
| 282615 | Aug 15, 1985 | Aug 15, 1985 | Brown, J. R. | Dimmit | Edrington, Homer #2 | 4,500 | 12732693 |
| 282615 | Aug 15, 1985 | Aug 15, 1985 | Reneau, Nelda York | Dimmit | Edrington, Homer #2 | 4,200 | 12732693 |
| 275014 | May 14, 1985 | May 14, 1985 | Mesa Chica Ltd | Maverick | Levine, Ben #5701 | 1,970 | 32332259 |
| 267930 | Feb 27, 1985 | Feb 27, 1985 | Williamson Drilling Co., Inc. | Zavala | Rutledge #3 | 2,000 | 50732107 |
| 246699 | Jul 30, 1984 | Jul 30, 1984 | Williamson Drilling Co., Inc. | Zavala | Rutledge #2 | 2,000 | 50732072 |
| 233336 | Mar 20, 1984 | Mar 20, 1984 | Encino Energy & Development Corp | Zavala | Matthews, Ned #17 | 3,000 | 50732040 |
| 218860 | Oct 26, 1983 | Oct 26, 1983 | Weeks Exploration Company | Zavala | Norton, R. W. #102 | 2,500 | 50732007 |
| 218858 | Oct 26, 1983 | Oct 26, 1983 | Weeks Exploration Company | Zavala | Norton, R. W. #101 | 2,500 | 50732006 |
| 215905 | Sep 16, 1983 | Sep 16, 1983 | Aztec Petroleum Corp. | Zavala | Mathews Ranch #2601 | 2,500 | 50731969 |
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 at the last vintage; disposal from UIC permits and H-10 reports. Summary figures are rebuilt nightly.
Developers: this page as JSON is GET /v1/data/operators/tx/925911, documented in the API reference.