Petrora

OPERATORS · RRC 776590  · P-5 STATUS Y

Shidler, Mark L., Inc

Houston, TX

Watch this operator

Shidler, Mark L., Inc has filed no drilling permits in the past 12 months; its most recent permit was issued January 6, 2014.

The RRC wellbore file lists 25 wells under its operatorship (8 producing).

Lease reports credit it with 19.3K barrels of oil and 62.3K mcf of gas in the 12 months reported through April 2026, up 26% on the year before.

6 drilling permits have been issued to this operator number since 1992; its P-5 organization report was last filed July 4, 2026.

0
permits, last 12 months
—
vs prior 12 months (0)
0
counties, 12 months
8
producing wells, of 25 of record
31
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 · 4 of 6 mature permits
8
median days permit to spud · middle half 4–28
0
spuds, last 180 days
0%
cancelled · 0 permits
2
expired undrilled
0
permits a year over 22 active years

Where

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

County12 moAll timeWellsLast
Goliad county →—21Dec 10, 1999
Borden county →—10Nov 15, 1999
Clay county →—10Dec 22, 1992
Jones county →—12Jan 6, 2014
Liberty county →—10Apr 9, 2003

All 6 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
Leonard10
Coleman Junction10
Ellenburger10
Cook Mountain10
Yegua10
Vicksburg10
Frio10
Tannehill10
Bryson10

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 →

19.3K
bbl oil, last 12 reported months
+26%
vs the 12 months before
62.3K
mcf gas incl. casinghead, last 12
1.21M
bbl oil since reporting began

Gas, mcf

Last 12 months 62,331 · prior 12 115,053(-46%)

010K20K202420252026

Oil, barrels

Last 12 months 19,269 · prior 12 15,337(+26%)

01K2K3K202420252026

Beyond the permit record

RRC wellbore file

Wells of record

25
on the schedule
8
producing
0
shut in
0
injection
0
temp. abandoned
15
plugged

How it got them

2
permitted itself
22
acquired from others
1
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
Recompletion004
Drill001
Reenter001

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
Newark East (Barnett Shale)6528020032
Hot Springs4281850032
Pearsall (Austin Chalk)6998112520
Alyssa-Sadie (Canyon Reef)217310021
Giddings (Austin Chalk Gas)3477355010
Hordes Creek South (1950)4258040010
Indian Creek (M-2)4439289310
Mag (Austin Chalk)5665320011
Manor Lake East (Frio 9800)5720150010
Rancho Solo (Bruni)7455410010
Schwab (Wilcox)8167640010
Speaks S.W. (12010)8498499110

P-5 organization report

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

Registration
Status code Y
Last filed Jul 4, 2026
Gas operatorOil operator
Address
1313 Campbell RD Bldg D
Houston, TX 77055
(713) 252-7746
Officers and agents
Shidler, Mark L. · President
Shidler, Andrew M. · Vice President
Shidler, Jeffrey H. · Vice President
Shidler, Mitzi A. · Vice President

Latest permits

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

PermitSeenIssuedOperatorCountyLease / wellDepthAPI
775847Jan 6, 2014Jan 6, 2014Shidler, Mark L., Inc.JonesRailroad Unit #1 R4,00025335376
685800Oct 6, 2009Oct 6, 2009Kerns Petroleum, Inc.GonzalesKelly #111,36017732080
628671Nov 7, 2006Nov 7, 2006New Century Exploration, Inc.BrazoriaStevens #110,30003932954
628671Nov 7, 2006Nov 7, 2006New Century Exploration, Inc.BrazoriaStevens #110,30003932954
628671Nov 7, 2006Nov 7, 2006New Century Exploration, Inc.BrazoriaStevens #110,30003932954
619286May 19, 2006May 19, 2006Oak Hills Drilling & Oper., LLCParkerMartin #1HH8,90036734013
605277Aug 22, 2005Aug 22, 2005Reichmann Petroleum Corp.JohnsonParker-Betzel Unit #1HH10,00025130511
605277Aug 22, 2005Aug 22, 2005Reichmann Petroleum Corp.JohnsonParker-Betzel Unit #1HH11,50025130511
549027Aug 2, 2004Aug 2, 2004Richman Petroleum Corp.JohnsonRoss #1H10,00025130231
530121Apr 9, 2003Apr 9, 2003Shidler, Mark L., Inc.LibertyHamill-McDonald #110,99129130638
513901Oct 4, 2001Oct 4, 2001Crimson Energy Company, LCBrazosUvacek #1H10,40004130816
490096Dec 10, 1999Dec 10, 1999Shidler, Mark L., Inc.GoliadPereira #45,17317531726
489262Nov 15, 1999Nov 15, 1999Shidler, Mark L., Inc.BordenPhillips-Clayton-Johnson #10510,00003330568
484311Jun 3, 1999Jun 3, 1999Shidler, Mark L., Inc.GoliadPereira #45,16317531726
477753Jul 7, 1998Jul 7, 1998Samedan Oil CorporationGalvestonEvans, W. E. #19,35016731313

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/776590, documented in the API reference.