Petrora

OPERATORS · RRC 537160  · P-5 STATUS Y

McA Petro Corp

Flatonia, TX · most active in Fayette County

Watch this operator

Mca Petro Corp was issued 1 drilling permit in the past 12 months, versus 1 in the prior year, all in Fayette County. 0% were horizontal.

1 was issued in the past 90 days, after a quiet prior quarter.

The RRC wellbore file lists 144 wells under its operatorship (41 producing).

Lease reports credit it with 40.6K barrels of oil and 0 mcf of gas in the 12 months reported through April 2026, up 4% on the year before.

146 drilling permits have been issued to this operator number since 1980; its P-5 organization report was last filed September 4, 2025.

1
permits, last 12 months
+0%
vs prior 12 months (1)
1
counties, 12 months
41
producing wells, of 144 of record
84
leases it reports
0%
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.

40%
spud rate · 58 of 145 mature permits
49
median days permit to spud · middle half 27–84
0
spuds, last 180 days
1%
cancelled · 1 permits
87
expired undrilled
3
permits a year over 47 active years

Permits issued by month

LAST 5 MONTHS · BY ISSUE DATE

Last 12 months 5

012023202420252026

Where

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

County12 moAll timeWellsLast
Fayette county →1107130Oct 16, 2026
Gonzales county →—278Aug 10, 1999
Frio county →—84Dec 4, 1986
Atascosa county →—21Jun 19, 1985
Bastrop county →—11Feb 8, 1988
Wilson county →—10Dec 15, 1983

All 146 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
Sparta482
Queen City382
Carrizo50
Wilcox40
Reklaw31
Queen10
Bartosh10

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 →

40.6K
bbl oil, last 12 reported months
+4%
vs the 12 months before
0
mcf gas incl. casinghead, last 12
1.58M
bbl oil since reporting began

Oil, barrels

Last 12 months 40,603 · prior 12 39,040(+4%)

02K4K202420252026

Beyond the permit record

RRC wellbore file

Wells of record

144
on the schedule
41
producing
0
shut in
0
injection
0
temp. abandoned
91
plugged

How it got them

77
permitted itself
23
acquired from others
28
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

Fayette0 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
Drill11124
Recompletion0022

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
Muldoon SW. (Arnim Sand)637272003112
Elm Grove (Arnim -A-)28598200157
Muldoon (Weidel Sand)63720800113
Arnim East3720001104
Muldoon SW. (Drenner)6372780097
Muldoon SW. (Arnim-2)6372740095
Elm Grove (Wilcox Upper)2859880060
Arnim371900150
Julie Ann (Steinhauser Lo.)4759766640
MLJ (Queen City 1050)5624580040
Giddings (Austin Chalk-3)3473350030
Elm Grove (Sparta)2859860020

P-5 organization report

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

Registration
Status code Y
Last filed Sep 4, 2025
Gas operatorOil operator
Address
6731 Brown RD
Flatonia, TX 78941
(361) 258-1743
Officers and agents
Grahmann, Greg · Other
Grahmann, Hilary · Secretary,treasurer,vice Preside
Grahmann, Greg Allen · President

Latest permits

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

PermitSeenIssuedOperatorCountyLease / wellDepthAPI
919187Oct 18, 2026Oct 16, 2026McA Petroleum CorporationFayetteArnim Warren Lease #52,00014933661
908560Jun 13, 2025Jun 13, 2025McA Petroleum CorporationFayetteMary Huff Drenner #242,30014933619
899900Aug 6, 2024Aug 6, 2024McA Petroleum CorporationFayetteA.F. Steinhauser #132,33014933594
888017Feb 15, 2023Feb 15, 2023McA Petroleum CorporationFayetteArnim-Warren #31,85014932489
879329Apr 27, 2022Apr 27, 2022McA Petroleum CorporationFayetteArnim-Warren Unit #41,97014933541
873399Nov 15, 2021Nov 15, 2021McA Petroleum CorporationFayetteRandy Steinhauser #12,23214933255
872276Sep 3, 2021Sep 3, 2021McA Petroleum CorporationFayetteArnim-Warren #31,85014932489
842606Jul 30, 2018Jul 30, 2018McA Petroleum CorporationFayetteFannie Armstrong #41,96014933454
840447Jun 7, 2018Jun 7, 2018McA Petroleum CorporationFayetteFred Weidel #82,35014933451
838984Apr 23, 2018Apr 23, 2018McA Petroleum CorporationFayetteErvine & Bishop #142,40014933446
838984Apr 23, 2018Apr 23, 2018McA Petroleum CorporationFayetteErvine & Bishop #142,40014933446
838983Apr 23, 2018Apr 23, 2018McA Petroleum CorporationFayetteStandard Trust #162,30014933445
827880Aug 1, 2017Aug 1, 2017McA Petroleum CorporationFayetteMattie Derry #4D2,00014933434
823572Mar 9, 2017Mar 9, 2017McA Petroleum CorporationFayetteErvine & Bishop #122,10214932164
819747Nov 4, 2016Nov 4, 2016McA Petroleum CorporationFayetteMartin Cherry Sr #22,40014933426

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/537160, documented in the API reference.