OPERATORS · RRC 844083  · P-5 STATUS Y

Tesoro Expl. & Prod. Co

San Antonio, TX

Watch this operator

Tesoro Expl. & Prod. CO has filed no drilling permits in the past 12 months; its most recent permit was issued July 7, 1994.

22 drilling permits have been issued to this operator number since 1989; its P-5 organization report was last filed March 7, 2003.

0
permits, last 12 months
—
vs prior 12 months (0)
0
counties, 12 months
0
producing wells, of 0 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.

41%
spud rate · 9 of 22 mature permits
26
median days permit to spud · middle half 15–33
0
spuds, last 180 days
0%
cancelled · 0 permits
13
expired undrilled
4
permits a year over 6 active years

Where

Counties by permits in the last 12 months, with all-time permits and current wells of record there.

County12 moAll timeWellsLast
Starr county →—110Aug 26, 1991
Zapata county →—50Oct 25, 1990
Jim Hogg county →—30Jan 3, 1990
Duval county →—10Jul 7, 1994
Goliad county →—10Jun 29, 1994
Maverick county →—10Jul 24, 1990

All 22 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 →

FormationWellsPermitted last 3 yrs
Queen City70
Wilcox40
Reklaw10

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

0
on the schedule
0
producing
0
shut in
0
injection
0
temp. abandoned
0
plugged

How it got them

0
permitted itself
0
acquired from others
9
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 →

Type12 moPrior 12All time
Drill0021
Field transfer001

P-5 organization report

As registered with the RRC. About the P-5 →

Registration
Status code Y
Last filed Mar 7, 2003
Address
300 Concord Plaza Dr
San Antonio, TX 78216
Officers and agents
Oliver, Robert W. · President
Bissell, John W. · Vice President
Sherburne, John · Controller

Latest permits

NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES

PermitSeenIssuedOperatorCountyLease / wellDepthAPI
425591Jul 7, 1994Jul 7, 1994Tesoro Expl. & Prod. CompanyDuvalWeil Heirs #113,50013137953
425291Jun 29, 1994Jun 29, 1994Tesoro Expl. & Prod. CompanyGoliadBruns #110,00017532789
391267Aug 26, 1991Aug 26, 1991Tesoro Expl. & Prod. CompanyStarrGuerra Gas Unit A #211,80042732492
391051Aug 19, 1991Aug 19, 1991Tesoro Expl. & Prod. CompanyStarrRamirez-USA Gas Unit E #110,90042732489
387099Apr 23, 1991Apr 23, 1991Tesoro Expl. & Prod. CompanyStarrGuerra #315,16042732476
382932Jan 9, 1991Jan 9, 1991Tesoro Expl. & Prod. CompanyStarrTexaco Fee #119,00042732460
382786Jan 4, 1991Jan 4, 1991Tesoro Expl. & Prod. CompanyStarrU.S.A.-Guerra #114,70042732461
382786Jan 4, 1991Jan 4, 1991Tesoro Expl. & Prod. CompanyStarrU.S.A.-Guerra Gas Unit B #114,70042732461
379880Oct 25, 1990Oct 25, 1990Tesoro Expl. & Prod. CompanyZapataPena #210,50050532730
379880Oct 25, 1990Oct 25, 1990Tesoro Expl. & Prod. CompanyZapataPena #210,50050532730
376498Aug 21, 1990Aug 21, 1990Tesoro Expl. & Prod. CompanyZapataVela #18,10050532712
376498Aug 21, 1990Aug 21, 1990Tesoro Expl. & Prod. CompanyZapataVela #19,00050532712
376469Aug 10, 1990Aug 10, 1990Tesoro Expl. & Prod. CompanyStarrGuerra #217,00042732434
376469Aug 10, 1990Aug 10, 1990Tesoro Expl. & Prod. CompanyStarrGuerra-USA Gas Unit C #214,58142732434
375758Jul 24, 1990Jul 24, 1990Tesoro Expl. & Prod. CompanyMaverickLA Paloma #20516,80032332403

Full permit history →

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/844083, documented in the API reference.