OPERATORS · RRC 780216 · P-5 STATUS Y

Sierra Minerals, Inc

Rockdale, TX

Sierra Minerals, Inc has filed no drilling permits in the past 12 months; its most recent permit was issued August 7, 1995.

The RRC wellbore file lists 22 wells under its operatorship.

19 drilling permits have been issued to this operator number since 1986; its P-5 organization report was last filed March 4, 2016.

0: permits, last 12 months
—: vs prior 12 months (0)
0: counties, 12 months
0: producing wells, of 22 of record
7: 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.

21%: spud rate · 4 of 19 mature permits
10: median days permit to spud · middle half 6–14
0: spuds, last 180 days
0%: cancelled · 0 permits
15: expired undrilled
2: permits a year over 10 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
Bastrop county →	—	10	0	May 27, 1988
Milam county →	—	4	21	Jan 22, 1990
Matagorda county →	—	3	1	Aug 7, 1995
Calhoun county →	—	1	0	Nov 18, 1994
Fayette county →	—	1	0	May 31, 1988

All 19 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
Taylor	6	0
Wilcox	2	0
Eagle Ford	1	0
Austin Chalk	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
13.5K: 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

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

How it got them

1: permitted itself
7: acquired from others
15: 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 →

Type	12 mo	Prior 12	All time
Drill	0	0	18
Recompletion	0	0	1

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
Minerva-Rockdale61858001	21	0
Wildcat6001	1	0

P-5 organization report

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

Registration: Status code Y; Last filed Mar 4, 2016

Address: 627 North Main; Rockdale, TX 76567

Officers and agents: McKinney, H. Hal · President/Secretary

Latest permits

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

Permit	Seen	Issued	Operator	County	Lease / well	Depth	API
438566	Aug 7, 1995	Aug 7, 1995	Sierra Minerals, Inc.	Matagorda	Solution #3	2,500	32131718
438127	Jul 21, 1995	Jul 21, 1995	Sierra Minerals, Inc.	Matagorda	Solution #2	2,500	32131717
438126	Jul 21, 1995	Jul 21, 1995	Sierra Minerals, Inc.	Matagorda	Solution #1	2,500	32131716
430210	Nov 18, 1994	Nov 18, 1994	Sierra Minerals, Inc.	Calhoun	Trull Heirs-Hoot Owl #1	3,100	05731531
367070	Jan 22, 1990	Jan 22, 1990	Sierra Minerals, Inc.	Milam	Stamper #1	2,800	33133263
346781	May 31, 1988	May 31, 1988	Sierra Minerals, Inc.	Fayette	Vecera Heirs #1	10,600	14932280
347122	May 27, 1988	May 27, 1988	Sierra Minerals, Inc.	Bastrop	Steinback #2A	4,400	02131209
346830	May 20, 1988	May 20, 1988	Sierra Minerals, Inc.	Bastrop	Cook, B. M. #1A	4,600	02131207
344909	Apr 7, 1988	Apr 7, 1988	Sierra Minerals, Inc.	Bastrop	Cook, B. M. #1	5,400	02131196
344296	Mar 23, 1988	Mar 23, 1988	Sierra Minerals, Inc.	Bastrop	Courtemanche #1	5,400	02131189
342204	Feb 2, 1988	Feb 2, 1988	Sierra Minerals, Inc.	Bastrop	Steinback #2	5,500	02131165
341374	Jan 13, 1988	Jan 13, 1988	Sierra Minerals, Inc.	Bastrop	Barker Heirs #3	5,200	02131159
340246	Dec 15, 1987	Dec 15, 1987	Sierra Minerals, Inc.	Bastrop	Noack, C. #3	5,150	02131140
339346	Nov 24, 1987	Nov 24, 1987	Sierra Minerals, Inc.	Bastrop	Noack, C. #1	5,100	02131126
338390	Nov 4, 1987	Nov 4, 1987	Sierra Minerals, Inc.	Milam	Harber-Billie #1	2,800	33133180

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/780216, documented in the API reference.