OPERATORS · RRC 844105 · P-5 STATUS Y
Tesoro Petro Corp
San Antonio, TX
Watch this operatorTesoro Petro Corp has filed no drilling permits in the past 12 months; its most recent permit was issued January 15, 1988.
The RRC wellbore file lists 30 wells under its operatorship.
85 drilling permits have been issued to this operator number since 1977; its P-5 organization report was last filed September 15, 1989.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 0
- producing wells, of 30 of record
- 0
- leases it reports
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 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.
- 34%
- spud rate · 29 of 85 mature permits
- 52
- median days permit to spud · middle half 14–68
- 0
- spuds, last 180 days
- 0%
- cancelled · 0 permits
- 56
- expired undrilled
- 8
- permits a year over 11 active years
Where
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 |
|---|---|---|---|---|
| Dimmit county → | — | 28 | 5 | Jan 15, 1988 |
| Duval county → | — | 21 | 8 | Oct 23, 1985 |
| Karnes county → | — | 10 | 2 | Jun 23, 1987 |
| Webb county → | — | 8 | 1 | Nov 30, 1983 |
| Calhoun county → | — | 4 | 1 | Nov 19, 1981 |
| Gaines county → | — | 2 | 0 | Aug 8, 1983 |
| Borden county → | — | 1 | 0 | Sep 25, 1980 |
| Garza county → | — | 1 | 0 | Nov 17, 1981 |
| Grimes county → | — | 1 | 0 | Dec 9, 1981 |
| Jim Hogg county → | — | 1 | 0 | Feb 24, 1981 |
| Jim Wells county → | — | 1 | 0 | Aug 7, 1981 |
| Kent county → | — | 1 | 0 | Dec 9, 1980 |
| Liberty county → | — | 1 | 0 | Sep 17, 1982 |
| San Patricio county → | — | 1 | 0 | Nov 12, 1980 |
| Terry county → | — | 1 | 0 | Jun 30, 1981 |
| Wharton county → | — | 1 | 0 | Dec 31, 1981 |
| Wilson county → | — | 1 | 0 | Dec 13, 1977 |
| Zavala county → | — | 1 | 2 | Dec 15, 1981 |
All 85 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 |
|---|---|---|
| San Miguel | 6 | 0 |
| Olmos | 3 | 0 |
| Anacacho | 2 | 0 |
| Wilcox | 2 | 0 |
| Carrizo | 1 | 0 |
| Reklaw | 1 | 0 |
| San Andres | 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
- 0
- 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
- 30
- on the schedule
- 0
- producing
- 0
- shut in
- 0
- injection
- 0
- temp. abandoned
- 13
- plugged
How it got them
- 3
- permitted itself
- 1
- acquired from others
- 34
- permitted, now run by others
Acquired means the well's permit names a different operator than the schedule does today. Transfers and operator numbers →
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 0
- active UIC permits of 5
- 0
- permitted bbl/day, active
- 0
- bbl injected, last 12 reported months
- Jun 2025
- reported through
Permitted volume is a ceiling, not throughput. How to read it →
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 | 43 |
| Recompletion | 0 | 0 | 28 |
| Other | 0 | 0 | 14 |
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 |
|---|---|---|
| Peters E. (Argo Sd.)70841111 | 8 | 0 |
| Toalson (Olmos -A-)90254500 | 4 | 0 |
| Elaine (5100)28223952 | 4 | 0 |
| Pearsall (Austin Chalk)69981125 | 2 | 0 |
| Gossamer (Edwards)36044400 | 1 | 0 |
| Keseling (Hiller Sand)49085330 | 1 | 0 |
| Magnolia Beach (7800)56710720 | 1 | 0 |
| McCaskill (Wilcox M-7)58932625 | 1 | 0 |
| McCaskill (Wilcox N-1)58932875 | 1 | 0 |
| Mirando City62044001 | 1 | 0 |
| Parsell South (Cherokee -A-)69431666 | 1 | 0 |
| Billiams Creek (Woodbine)8166500 | 1 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Sep 15, 1989
- Address
- 300 Concord Plaza Dr
- San Antonio, TX 78216
- Officers and agents
- Juren, Dennis · President/Coo
- Queen, James W. · Vice President
- Hyslop, James R. · Vice 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 |
|---|---|---|---|---|---|---|---|
| 701786 | Sep 20, 2010 | Sep 20, 2010 | Sabco Operating Company | Dimmit | Elaine Field /San Miguel/ Unit #82 | 7,006 | 12731119 |
| 341513 | Jan 15, 1988 | Jan 15, 1988 | Tesoro Petroleum Corporation | Dimmit | Elaine Dimukes Unit #47 | 6,000 | 12730536 |
| 339560 | Dec 3, 1987 | Dec 3, 1987 | Tesoro Petroleum Corporation | Dimmit | Elaine Dismukes Unit #85 | 10,250 | 12731669 |
| 333344 | Aug 21, 1987 | Aug 21, 1987 | Tesoro Petroleum Corporation | Dimmit | Guaranteed Home Financing Co. #91 | 5,300 | 12732156 |
| 329998 | Jun 23, 1987 | Jun 23, 1987 | Tesoro Petroleum Corporation | Karnes | Hilbrich-Sellers #2 | 8,369 | 25530158 |
| 288139 | Oct 23, 1985 | Oct 23, 1985 | Tesoro Petroleum Corporation | Duval | Peters, East (Argo Sand) Unit #B1 | 2,710 | 13107446 |
| 284665 | Sep 11, 1985 | Sep 11, 1985 | Tesoro Petroleum Corporation | Duval | Peters, East (Argo Sand) Unit #B6 | 2,600 | 13136785 |
| 284664 | Sep 11, 1985 | Sep 11, 1985 | Tesoro Petroleum Corporation | Duval | Peters, East (Argo Sand) Unit #B7 | 2,600 | 13136784 |
| 277887 | Jun 17, 1985 | Jun 17, 1985 | Tesoro Petroleum Corporation | Dimmit | Elaine Field/San Miguel/Unit #15 | 4,551 | 12700264 |
| 240207 | May 25, 1984 | May 25, 1984 | Tesoro Petroleum Corporation | Dimmit | Elaine Field/San Miguel/Unit #66 | 4,560 | 12700227 |
| 224587 | Dec 23, 1983 | Dec 23, 1983 | Tesoro Petroleum Corporation | Duval | Peters Estate #1 | 2,400 | 13136390 |
| 224996 | Nov 30, 1983 | Nov 30, 1983 | Tesoro Petroleum Corporation | Webb | South Lopez Unit #503 | 2,400 | 47933715 |
| 204511 | Aug 8, 1983 | Aug 8, 1983 | Tesoro Petroleum Corporation | Gaines | Peters, Ellen B. #2 | 6,000 | 16532626 |
| 199654 | Jun 28, 1983 | Jun 28, 1983 | Tesoro Petroleum Corporation | Karnes | Sellers, Hilbrich #2 U | 8,600 | 25530158 |
| 193445 | May 5, 1983 | May 5, 1983 | Tesoro Petroleum Corporation | Duval | Barnes Estate #12 W | 2,300 | 13182060 |
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/844105, documented in the API reference.