Petrora

OPERATORS · RRC 871101  · P-5 STATUS Y

Tristar Expl, Inc

Pflugerville, TX

Watch this operator

Tristar Expl, Inc has filed no drilling permits in the past 12 months; its most recent permit was issued June 5, 2008.

The RRC wellbore file lists 14 wells under its operatorship.

33 drilling permits have been issued to this operator number since 1978; its P-5 organization report was last filed May 4, 2026.

0
permits, last 12 months
—
vs prior 12 months (0)
0
counties, 12 months
0
producing wells, of 14 of record
21
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.

67%
spud rate · 22 of 33 mature permits
10
median days permit to spud · middle half 1–53
0
spuds, last 180 days
0%
cancelled · 0 permits
11
expired undrilled
1
permits a year over 30 active years

Where

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

County12 moAll timeWellsLast
Taylor county →—121Oct 4, 2007
Caldwell county →—40Nov 12, 2007
Goliad county →—40Jun 5, 2008
Jones county →—30Dec 14, 2000
Galveston county →—21Feb 6, 2004
Leon county →—20Oct 17, 2006
Stonewall county →—22Jul 11, 2001
Brazoria county →—12Jan 28, 2002
Brooks county →—14Mar 14, 2001
Crockett county →—12Apr 4, 2003
Parker county →—10Jun 27, 2001

All 33 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
Coleman Junction30
Gunsight30
Frio30
Ellenburger20
Yegua20
Palo Pinto10
Jackson10
Vicksburg10
Miocene (undifferentiated)10
Queen10
Saddle Creek10
San Andres10
Canyon10
Strawn10
Barnett10

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
78K
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

14
on the schedule
0
producing
0
shut in
0
injection
1
temp. abandoned
13
plugged

How it got them

5
permitted itself
7
acquired from others
12
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 1
0
permitted bbl/day, active
0
bbl injected, last 12 reported months
Jun 2025
reported through

By county

Stonewall0 active0 bbl/d

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 →

Type12 moPrior 12All time
Drill0019
Recompletion008
Reenter006

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.

FieldWellsProducing
Rachal (3700)7412043430
Wildcat1600130
Peacock (Ellenburger)6990766620
Rowan N. (Frio Upper 9600)7861533210
Rowan South (10 500)7861895010
Sarah White East (Frio 11200)8103885010
Rachal (4750)7412080610
Floodplain (Strawn)3149450010
Barbasal (Pennsylvanian)560880010

P-5 organization report

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

Registration
Status code Y
Last filed May 4, 2026
Gas operator
Address
1616 FM 685 NO 105 196
Pflugerville, TX 78660
Officers and agents
Baker, Roland R. · Texas Resident Agent
Alff, Andrew A. · President/Treasurer
Buck, William · Vice President/Secretary

Latest permits

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

PermitSeenIssuedOperatorCountyLease / wellDepthAPI
662073Jun 5, 2008Jun 5, 2008Tristar Exploration, IncGoliadHolchak #37,90017534095
649017Nov 12, 2007Nov 12, 2007Tristar Exploration, IncCaldwellEllison,w.m. D #213,50005530325
648524Nov 5, 2007Nov 5, 2007Tristar Exploration, IncCaldwellEllison, W. M. "D" #223,50005530326
648523Nov 1, 2007Nov 1, 2007Tristar Exploration, IncCaldwellEllison, W. M. D #233,50005530327
646205Oct 5, 2007Oct 5, 2007Tristar Exploration, IncCaldwellEllison, W. M. "D" #283,50005530332
645435Oct 4, 2007Oct 4, 2007Tristar Exploration, IncTaylorGuitar 12 #15,80044134197
634499Mar 13, 2007Mar 13, 2007Tristar Exploration, IncTaylorRiggans #15,80044134176
627600Oct 17, 2006Oct 17, 2006Tristar Exploration, IncLeonWarhawk #110,55028931268
620942Jun 14, 2006Jun 14, 2006Tristar Exploration, IncLeonJimmy Hill Gas Unit #110,04328931231
541811Feb 6, 2004Feb 6, 2004Tristar Exploration, IncGalvestonHenck "A" #110,97616701376
532322May 28, 2003May 28, 2003Tristar Exploration, IncGalvestonHenck "A" #111,50016701376
530285Apr 7, 2003Apr 7, 2003Tristar Exploration, IncTaylorOsborne #24,99944134069
530285Apr 7, 2003Apr 7, 2003Tristar Exploration, IncTaylorOsborne #26,50044134069
530134Apr 4, 2003Apr 4, 2003Tristar Exploration, IncCrockettUniversity #12021,70010539011
525680Nov 22, 2002Nov 22, 2002Tristar Exploration, IncTaylorPerry #2A2,80044134057

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/871101, documented in the API reference.