OPERATORS · RRC 223502  · P-5 STATUS Y

Dorchester Operating Company LLC

Dorchester Operating Company LLC has filed no drilling permits in the past 12 months.

The RRC wellbore file lists 76 wells under its operatorship (6 producing, 35 shut in).

Lease reports credit it with 38.2K barrels of oil and 12.6K mcf of gas in the 12 months reported through April 2026, down 7% on the year before.

It holds 13 active disposal or injection permits, injecting 5.44M barrels in the 12 months reported through June 2025.

0
permits, last 12 months
—
vs prior 12 months (0)
0
counties, 12 months
6
producing wells, of 76 of record
34
leases it reports
—
horizontal, 12 months

WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 2026

Where

No permits on file under this operator number. Counties of its wells of record, from the RRC wellbore file.

CountyWellsProducing
Atascosa county →383
Refugio county →383

All 0 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
No completion tops on file.

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 →

38.2K
bbl oil, last 12 reported months
-7%
vs the 12 months before
12.6K
mcf gas incl. casinghead, last 12
207K
bbl oil since reporting began

Oil, barrels

Last 12 months 38,183 · prior 12 41,177(-7%)

02K4K6K202420252026

Gas, mcf

Last 12 months 12,579 · prior 12 11,669(+8%)

05001K1.5K202420252026

Beyond the permit record

RRC wellbore file

Wells of record

76
on the schedule
6
producing
35
shut in
2
injection
0
temp. abandoned
21
plugged

How it got them

0
permitted itself
27
acquired from others
0
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

13
active UIC permits of 18
133K
permitted bbl/day, active
5.44M
bbl injected, last 12 reported months
Jun 2025
reported through

By county

Refugio13 active133K bbl/d

Permitted volume is a ceiling, not throughput. How to read it →

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
Weigang95888001373
Greta (4400)36867780363
Greta (F-3 West)3686715610
Greta West (F-5)3687615710
Weigang West (Carrizo)9589450010

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
P O Box 1097
Refugio, TX 78377
(361) 816-6461
Officers and agents
Black Falcon Resources, LP · Managing Member
C.W. Stocker, III, P.C. · Managing Member
Basalt Resources LLC · Managing Member
Coker, Chester · Vice President (Black Falcon Res
Stocker, Charles W III · President (C.W. Stocker III P.C)
Holmes, James · President (Basalt Resources LLC)
Black Falcon Exploration, Inc. · GP of Black Falcon Resources LP

Latest permits

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

PermitSeenIssuedOperatorCountyLease / wellDepthAPI
769555Oct 10, 2013Oct 10, 2013Acock/Anaqua Operating Co., LPRefugioJ.F.B. Heard #84,38239100867
701548Sep 7, 2010Sep 7, 2010Cambrian Management, Ltd.RefugioHeard, Fannie V.W. #304,51939131837
694483Apr 16, 2010Apr 16, 2010Acock/Anaqua Operating Co., LPAtascosaA.O. Schumann #13H3,69101334302
656873Mar 11, 2008Mar 11, 2008Acock/Anaqua Operating Co., LPAtascosaA.O. Schumann #124,20001334241
552913Oct 27, 2004Oct 27, 2004Primrose Operating CompanyRefugioHeard, F. V. W. #376,30039132595
546986Jun 16, 2004Jun 16, 2004Acock/Anaqua Operating Co., LPAtascosaHurt & Tartt #53,78701300748
546671Jun 10, 2004Jun 10, 2004Primrose Operating CompanyRefugioHeard, F.V.W. #376,30039132595
546671Jun 10, 2004Jun 10, 2004Primrose Operating CompanyRefugioHeard, F.V.W. #376,30039132595
531230Apr 28, 2003Apr 28, 2003Primrose Operating CompanyRefugioHeard, F. V. W. #358,50039132511
531230Apr 28, 2003Apr 28, 2003Primrose Operating CompanyRefugioHeard, F. V. W. #358,50039132511
531230Apr 28, 2003Apr 28, 2003Primrose Operating CompanyRefugioHeard, F. V. W. #358,50039132511
480336Nov 2, 1998Nov 2, 1998Somex Energy CompanyAtascosaSchumann, H. A. #64,00001334117
478376Aug 4, 1998Aug 4, 1998Somex Energy CompanyAtascosaHenderson #104,05001334115
426627Sep 7, 1994Sep 7, 1994Exxon Corp.RefugioHeard, Fannie V.W. #334,32939132111
420663Jan 31, 1994Jan 31, 1994Exxon Corp.RefugioHeard, J. F. B. #222,63839130203

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/223502, documented in the API reference.