Petrora

OPERATORS · RRC 500740  · P-5 STATUS Y

Lillis, Michael D

Midland, TX

Watch this operator

Lillis, Michael D has filed no drilling permits in the past 12 months; its most recent permit was issued August 3, 2011.

The RRC wellbore file lists 51 wells under its operatorship.

113 drilling permits have been issued to this operator number since 1977; its P-5 organization report was last filed April 4, 2026.

0
permits, last 12 months
—
vs prior 12 months (0)
0
counties, 12 months
0
producing wells, of 51 of record
45
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.

54%
spud rate · 61 of 113 mature permits
38
median days permit to spud · middle half 10–84
0
spuds, last 180 days
0%
cancelled · 0 permits
51
expired undrilled
3
permits a year over 34 active years

Where

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

County12 moAll timeWellsLast
McCulloch county →—5829Aug 11, 1999
Concho county →—2711Aug 3, 2011
Eastland county →—154Oct 6, 2000
Hardeman county →—41Mar 5, 1985
Haskell county →—21Feb 28, 1985
Runnels county →—21Feb 17, 2004
Tom Green county →—22Feb 12, 2004
Gonzales county →—10Jun 1, 1992
Pecos county →—10Sep 20, 1999
Wilbarger county →—11Dec 17, 1979

All 113 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
Strawn230
Canyon110
Palo Pinto50
Mississippian30
Cisco20
Ellenburger20
Caddo20
Tannehill10
Bend10
Marble Falls10

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
71.4K
bbl oil since reporting began

Gas, mcf

Last 12 months 0 · prior 12 0

0102030202420252026

Beyond the permit record

RRC wellbore file

Wells of record

51
on the schedule
0
producing
0
shut in
0
injection
1
temp. abandoned
49
plugged

How it got them

40
permitted itself
8
acquired from others
31
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 16
0
permitted bbl/day, active
0
bbl injected, last 12 reported months
Jun 2025
reported through

By county

McCulloch0 active0 bbl/d
Eastland0 active0 bbl/d
Haskell0 active0 bbl/d
Hardeman0 active0 bbl/d
Gonzales0 active0 bbl/d
Foard0 active0 bbl/d
Tom Green0 active0 bbl/d
Wilbarger0 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
Drill0097
Recompletion006
Reenter005
Other003
Field transfer002

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
Hall (Strawn)38184720160
Millersview W. (Camar Sd.)6157707560
Byrd (Strawn)1416250040
Eastland County Regular (Gas)2735849830
BO-John (Tillery)1038838030
Lillis (Strawn)5357465030
Gassiot (Canyon)3412050020
Lojon (Strawn)5442950020
River Oak (Cross Cut)7700407510
River Oak (Palo Pinto)7700426510
Texas Hugoton8912000110
Berry (Miss.)738133310

P-5 organization report

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

Registration
Status code Y
Last filed Apr 4, 2026
Gas operator
Address
Box 3332
Midland, TX 79702
(432) 528-1490
Officers and agents
Lillis, Michael D. · Sole Proprietor
Amsler, Casey · Filing Agent

Latest permits

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

PermitSeenIssuedOperatorCountyLease / wellDepthAPI
720723Aug 3, 2011Aug 3, 2011Lillis, Michael D.ConchoLloyd #14,00009532364
675232Dec 31, 2008Dec 31, 2008Lillis, Michael D.ConchoGlass 345 #23,00009532313
675223Dec 31, 2008Dec 31, 2008Lillis, Michael D.ConchoGlass 345 #13,00009532308
641256Aug 28, 2007Aug 28, 2007Lillis, Michael D.ConchoGlass #43,00009532134
629898Mar 6, 2007Mar 6, 2007Lillis, Michael D.ConchoGlass #63,00009532195
629894Dec 15, 2006Dec 15, 2006Lillis, Michael D.ConchoGlass #53,00009532194
608255May 1, 2006May 1, 2006Lillis, Michael D.ConchoGlass #43,00009532134
616681Apr 6, 2006Apr 6, 2006Lillis, Michael D.ConchoBenge #43,00009532161
616280Apr 6, 2006Apr 6, 2006Lillis, Michael D.ConchoBenge #33,00009532160
616280Apr 6, 2006Apr 6, 2006Lillis, Michael D.ConchoBenge #33,00009532160
616277Mar 31, 2006Mar 31, 2006Lillis, Michael D.ConchoBenge #23,00009532159
504507Feb 28, 2006Feb 28, 2006Lillis, Michael D.ConchoCox, Kathy #13,80009531107
609127Nov 9, 2005Nov 9, 2005Lillis, Michael D.ConchoBenge #13,50009532137
602135Jun 17, 2005Jun 17, 2005Lillis, Michael D.ConchoRicks #43,54009531966
553991Dec 3, 2004Dec 3, 2004Lillis, Michael D.ConchoDenis #44,50009532091

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/500740, documented in the API reference.