OPERATORS · TEXAS · P-5 NUMBER 925911
Williamson Operating Co.
- P-5 status
- Delinquent (D)
- P-5 last filed
- Apr 16, 1997
- Based in
- Uvalde, TX
Williamson Operating 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 April 16, 1997.
- 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 NOV 5, 2026
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.
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 |
|---|---|---|
| Escondido | 1 | 0 |
| Olmos | 1 | 0 |
| San Miguel | 1 | 0 |
| Navarro | 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 ten years.
Beyond the permit record
RRC wellbore file
Wells of record
How it got them
Each count opens the wells it counts. Acquired means the well's permit names a different operator than the schedule does today; wells it permitted that others now run are in its permit history, marked with who runs them now. 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 Delinquent (D)
- Last filed Apr 16, 1997
- Gas operatorOil operator
- Address
- 825 Cherry St
- Uvalde, TX 78801
- (210) 278-7485
- 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 by the operator that filed them, through the statewide reported-through month; disposal from UIC permits and H-10 reports. Summary figures are rebuilt nightly. Nothing is estimated.
Developers: this page as JSON is GET /v1/data/operators/tx/925911, documented in the API reference.