Petrora

OPERATORS · RRC 212175  · P-5 STATUS Y

Delfin Oper, LLC

Dallas, TX

Watch this operator

Delfin Oper, LLC has filed no drilling permits in the past 12 months; its most recent permit was issued October 24, 2023.

The RRC wellbore file lists 20 wells under its operatorship (12 producing, 1 shut in).

Lease reports credit it with 8.92K barrels of oil and 75.4K mcf of gas in the 12 months reported through April 2026, down 24% on the year before.

7 drilling permits have been issued to this operator number since 2017; its P-5 organization report was last filed March 4, 2026.

0
permits, last 12 months
—
vs prior 12 months (0)
0
counties, 12 months
12
producing wells, of 20 of record
40
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.

100%
spud rate · 7 of 7 mature permits
30
median days permit to spud · middle half 25–86
0
spuds, last 180 days
0%
cancelled · 0 permits
0
expired undrilled
1
permits a year over 7 active years

Permits issued by month

LAST 2 MONTHS · BY ISSUE DATE

Last 12 months 2

01

Where

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

County12 moAll timeWellsLast
Jack county →—412Jul 17, 2018
Colorado county →—10Feb 24, 2023
Foard county →—11Feb 26, 2020
Fort Bend county →—11Oct 24, 2023

All 7 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
Strawn50
Palo Pinto50
Caddo50
Bryson40
Canyon40
Atoka40
Gunsight40
Cisco10
Yegua10
Vicksburg10
Frio10
Miocene (undifferentiated)10
Tannehill10
Coleman Junction10
Bend10

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 →

8.92K
bbl oil, last 12 reported months
-24%
vs the 12 months before
75.4K
mcf gas incl. casinghead, last 12
242K
bbl oil since reporting began

Gas, mcf

Last 12 months 75,437 · prior 12 111,745(-32%)

010K20K202420252026

Oil, barrels

Last 12 months 8,924 · prior 12 11,785(-24%)

01K2K3K202420252026

Beyond the permit record

RRC wellbore file

Wells of record

20
on the schedule
12
producing
1
shut in
0
injection
3
temp. abandoned
2
plugged

How it got them

6
permitted itself
12
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
Drill007

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
Catlin (Caddo Conglomerate)1635950032
Adams Ranch (Nodosaria 1-Str.)65068432
Brookeland (Austin Chalk 8800)1219350022
Bowie SW. (Marble Falls)1089583621
KRS (Marble Falls)4794150021
Dimock (Ellenburger)2486722511
Dunes (Congl)2655833310
Hanagan (Des Moines)3864740010
Newark East (Barnett Shale)6528020010
Adams Ranch (Yegua DY)65094011
Blue Ridge988000111
Boonsville (Bend Congl. Gas)1057452011

P-5 organization report

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

Registration
Status code Y
Last filed Mar 4, 2026
Gas operatorOil operator
Address
12801 N Central Expy Suite 1515
Dallas, TX 75243
(214) 926-4266
Officers and agents
Rather, Ralph Edward · President
Rather, Carroll David · Vice President

Latest permits

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

PermitSeenIssuedOperatorCountyLease / wellDepthAPI
894650Oct 24, 2023Oct 24, 2023Delfin Operating, LLCFort BendPanther #24,50015733286
888294Feb 24, 2023Feb 24, 2023Delfin Operating, LLCColoradoBalusek #16,80008932773
860357Feb 26, 2020Feb 26, 2020Delfin Operating, LLCFoardChristopher #18,50015530814
842465Jul 17, 2018Jul 17, 2018Delfin Operating, LLCJackButts #1A6,70023740510
833565Nov 29, 2017Nov 29, 2017Delfin Operating, LLCJackMcMillan A #17,00023740491
828356Jul 6, 2017Jul 6, 2017Choice Exploration, Inc.JasperH J Ballard #19,50024130895
828356Jul 6, 2017Jul 6, 2017Choice Exploration, Inc.JasperH. J. Ballard #19,50024130895
828350Jun 30, 2017Jun 30, 2017Delfin Operating, LLCJackL.E. Catlin #6A7,00023740481
825427Apr 24, 2017Apr 24, 2017Choice Exploration, Inc.OrangeTexla Mill #37,65036130980
823551Mar 14, 2017Mar 14, 2017Delfin Operating, LLCJackL.E. Catlin #1A7,00023740465
813139Jan 15, 2016Jan 15, 2016Choice Exploration, Inc.JackCorry B #16,10023740415
812709Dec 18, 2015Dec 18, 2015Choice Exploration, Inc.JackKoin #16,95023740411
799392Oct 31, 2014Oct 31, 2014Choice Exploration, Inc.JasperPiney Woods #27,85024130872
798597Oct 21, 2014Oct 21, 2014Choice Exploration, Inc.JasperPiney Woods #17,45024130871
783057Apr 29, 2014Apr 29, 2014Enexco, Inc.JackHull #26,50023740088

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/212175, documented in the API reference.