Petrora

OPERATORS · RRC 166150  · P-5 STATUS Y

COG Oper LLC

Midland, TX · most active in Upton County

Watch this operator

Cog Oper LLC was issued 134 drilling permits in the past 12 months, up 21% on the prior year, across 6 counties led by Upton with 60. 100% were horizontal.

25 were issued in the past 90 days, down 42% on the prior quarter.

The RRC wellbore file lists 4,467 wells under its operatorship (1,956 producing, 880 shut in).

Lease reports credit it with 53.9M barrels of oil and 200M mcf of gas in the 12 months reported through April 2026, down 16% on the year before.

It holds 40 active disposal or injection permits, injecting 61M barrels in the 12 months reported through June 2025.

4,568 drilling permits have been issued to this operator number since 2004; its P-5 organization report was last filed May 4, 2026.

134
permits, last 12 months
+21%
vs prior 12 months (111)
6
counties, 12 months
1.96K
producing wells, of 4.47K of record
1.75K
leases it reports
100%
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.

83%
spud rate · 3,754 of 4,500 mature permits
59
median days permit to spud · middle half 32–109
0
spuds, last 180 days -100%
0%
cancelled · 0 permits
814
expired undrilled
208
permits a year over 22 active years

Permits issued by month

LAST 47 MONTHS · BY ISSUE DATE

Last 12 months 175 · prior 12 174(+1%)

020406020222023202420252026

Where

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

County12 moAll timeWellsLast
Upton county →601,7331,512Sep 17, 2026
Andrews county →44443704Aug 13, 2026
Midland county →14617891Oct 20, 2026
Loving county →7293230Jan 16, 2026
Martin county →5255545Sep 10, 2026
Ector county →4232167Dec 11, 2025
Reeves county →—42439Feb 12, 2025
Culberson county →—19697Mar 6, 2018
Glasscock county →—153195Feb 13, 2020
Irion county →—8632Jan 21, 2015
Pecos county →—457Dec 30, 2016
Ward county →—3017Jul 25, 2022
Gaines county →—270Sep 21, 2010
Winkler county →—1012May 3, 2024
Terry county →—81Mar 13, 2013
Schleicher county →—65Apr 6, 2015
Reagan county →—41May 21, 2024
Crane county →—20Oct 16, 2006
Howard county →—21Apr 15, 2009
Crockett county →—13Jul 14, 2009
Mitchell county →—10Oct 10, 2005

All 4,568 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
Spraberry1,949161
Wolfcamp1,76350
San Andres1,232191
Grayburg1,197186
Yates1,195189
Clear Fork843101
Dean75513
Queen727108
Glorieta64485
Seven Rivers62781
Delaware47510
Santa Rosa46769
Bone Spring4669
Bend4220
Strawn4050

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 →

53.9M
bbl oil, last 12 reported months
-16%
vs the 12 months before
200M
mcf gas incl. casinghead, last 12
645M
bbl oil since reporting began

Oil, barrels

Last 12 months 53,920,455 · prior 12 64,191,895(-16%)

05M10M202420252026

Gas, mcf

Last 12 months 200,183,263 · prior 12 206,424,271(-3%)

010M20M202420252026

Beyond the permit record

RRC wellbore file

Wells of record

4,467
on the schedule
1,956
producing
880
shut in
21
injection
21
temp. abandoned
1,093
plugged

How it got them

2,164
permitted itself
2,131
acquired from others
801
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

40
active UIC permits of 147
707K
permitted bbl/day, active
61M
bbl injected, last 12 reported months
Jun 2025
reported through

By county

Loving13 active305K bbl/d
Upton8 active139K bbl/d
Ector5 active84K bbl/d
Martin5 active66K bbl/d
Midland5 active43.3K bbl/d
Winkler2 active40K bbl/d
Andrews2 active30K bbl/d
Culberson0 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
Drill1341064,481
Recompletion0254
Field transfer0118
Reenter0010
Reclass003
Other002

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
Spraberry (Trend Area)852803002,9161,264
Pegasus (Consolidated)70279100368262
Parks (Consolidated)69233125344144
Phantom (Wolfcamp)71052900194128
Pegasus (Spraberry)70279750940
Garden City S. (Wolfcamp)339985008558
Sandbar (Bone Spring)805445007236
Ford West (Wolfcamp)319138004933
Pegasus (Pennsylvanian)70279500460
Pegasus (San Andres)70279625263
Parks (Spraberry)69233664250
Parks (Pennsylvanian)69233498170

P-5 organization report

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

Registration
Status code Y
Last filed May 4, 2026
Gas operatorOil operator
Address
600 W Illinois Ave
Midland, TX 79701
(432) 853-2355
Officers and agents
Corporation Service Company D/B/ · Texas Resident Agent
Levea, Brian C · Vice President
Meyers, Taylor · Assistant Treasurer
Lipford, Nelsey · Secretary
Carter, Stacey A · Secretary
Gresh, Phillip M III · Treasurer,vice President
Haynes-Welsh, Kontessa · Treasurer,vice President
Hamilton, Leslie D · Asst Tax Administration Officer
All 13 on the P-5 →

Latest permits

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

PermitSeenIssuedOperatorCountyLease / wellDepthAPI
915568Oct 22, 2026Oct 20, 2026COG Operating LLCMidlandCountry Mac A6 #702BHH10,00032948365
915572Oct 1, 2026Sep 29, 2026COG Operating LLCMidlandCountry Mac A10 #704LHH10,00032948369
915571Sep 27, 2026Sep 25, 2026COG Operating LLCMidlandCountry Mac A9 #704MHH10,00032948368
917677Sep 19, 2026Sep 17, 2026COG Operating LLCUptonBrawndo B18 #1604BHH10,00046143745
917676Sep 19, 2026Sep 17, 2026COG Operating LLCUptonBrawndo B17 #1603BHH10,00046143744
917675Sep 19, 2026Sep 17, 2026COG Operating LLCUptonBrawndo B16 #1602BHH10,00046143743
917674Sep 19, 2026Sep 17, 2026COG Operating LLCUptonBrawndo B15 #1601BHH10,00046143742
917678Sep 18, 2026Sep 16, 2026COG Operating LLCUptonBrawndo B19 #1605BHH10,00046143746
918316Sep 12, 2026Sep 10, 2026COG Operating LLCMartinJohnson Ranch #411JHH12,00031747437
915570Sep 11, 2026Sep 9, 2026COG Operating LLCMidlandCountry Mac A8 #703LHH10,00032948367
918315Sep 11, 2026Sep 9, 2026COG Operating LLCMartinJohnson Ranch #410SHH12,00031747436
918314Sep 11, 2026Sep 9, 2026COG Operating LLCMartinJohnson Ranch #410MHH12,00031747435
918313Sep 11, 2026Sep 9, 2026COG Operating LLCMartinJohnson Ranch #409AHH12,00031747434
918312Sep 11, 2026Sep 9, 2026COG Operating LLCMartinJohnson Ranch #408JHH12,00031747433
916862Aug 15, 2026Aug 13, 2026COG Operating LLCAndrewsMabee Dda A53 #1011JHH12,00000349364

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/166150, documented in the API reference.