Petrora

OPERATORS · RRC 835707  · P-5 STATUS Y

Tandem Engy Corp

Houston, TX

Watch this operator

Tandem Engy Corp has filed no drilling permits in the past 12 months; its most recent permit was issued March 12, 2015.

The RRC wellbore file lists 174 wells under its operatorship (27 producing, 48 shut in).

Lease reports credit it with 65.3K barrels of oil and 144K mcf of gas in the 12 months reported through April 2026, down 12% on the year before.

It holds 6 active disposal or injection permits, injecting 5.38M barrels in the 12 months reported through June 2025.

138 drilling permits have been issued to this operator number since 1997; its P-5 organization report was last filed May 4, 2026.

0
permits, last 12 months
—
vs prior 12 months (0)
0
counties, 12 months
27
producing wells, of 174 of record
90
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.

67%
spud rate · 93 of 138 mature permits
22
median days permit to spud · middle half 8–47
0
spuds, last 180 days
0%
cancelled · 0 permits
45
expired undrilled
8
permits a year over 18 active years

Where

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

County12 moAll timeWellsLast
Hardin county →—4873Mar 12, 2015
Palo Pinto county →—3430Apr 9, 2012
Harris county →—2863Sep 10, 2007
Scurry county →—180Jul 17, 2008
Pecos county →—71Jul 9, 2008
Andrews county →—10Oct 10, 2005
Atascosa county →—10Dec 8, 2008
Erath county →—13Sep 16, 1998

All 138 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
San Andres110
Barnett90
Marble Falls80
Duffer70
Miocene (undifferentiated)70
Caprock40
Glorieta40
Clear Fork40
Strawn30
Queen30
Ellenburger20
Grayburg10
Big Saline10
Yates10
Jackson10

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 →

65.3K
bbl oil, last 12 reported months
-12%
vs the 12 months before
144K
mcf gas incl. casinghead, last 12
3.73M
bbl oil since reporting began

Oil, barrels

Last 12 months 65,327 · prior 12 74,106(-12%)

05K10K202420252026

Gas, mcf

Last 12 months 144,172 · prior 12 158,748(-9%)

010K20K202420252026

Beyond the permit record

RRC wellbore file

Wells of record

174
on the schedule
27
producing
48
shut in
1
injection
9
temp. abandoned
64
plugged

How it got them

67
permitted itself
60
acquired from others
25
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

6
active UIC permits of 40
110K
permitted bbl/day, active
5.38M
bbl injected, last 12 reported months
Jun 2025
reported through

By county

Harris5 active100K bbl/d
Palo Pinto1 active10K bbl/d
Scurry0 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
Drill00120
Recompletion0013
Reenter005

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
Batson New61150017313
Tomball (Schultz SE.)90620782425
Strawn East (Marble Falls)8657425084
Tomball9062000170
Hooks (Shallow)4249550061
Giddings (Austin Chalk-3)3473350040
Birdsong (Lake Sand)833724041
X-Ray (Marble Falls)9914016630
C.B. Long (Marble Falls)1419550030
Palo Pinto County Regular6870700130
Tomball (Cockfield Upper 5500)9062009230
Tomball (Lewis 5930)9062029930

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
5065 Westheimer RD Ste 920
Houston, TX 77056
(281) 351-5840
Officers and agents
Colchado, Ruben · President,secretary,cfo

Latest permits

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

PermitSeenIssuedOperatorCountyLease / wellDepthAPI
804487Mar 12, 2015Mar 12, 2015Tandem Energy CorporationHardinChoate Fee #782,40019933526
804486Mar 12, 2015Mar 12, 2015Tandem Energy CorporationHardinChoate Fee #772,40019933525
804485Mar 12, 2015Mar 12, 2015Tandem Energy CorporationHardinChoate Fee #762,40019933524
804068Feb 25, 2015Feb 25, 2015Tandem Energy CorporationHardinChoate Fee #752,40019933522
783235Apr 29, 2014Apr 29, 2014Tandem Energy CorporationHardinChoate Fee #702,20019933480
783235Apr 29, 2014Apr 29, 2014Tandem Energy CorporationHardinChoate Fee #702,40019933480
782875Apr 28, 2014Apr 28, 2014Tandem Energy CorporationHardinChoate Fee #732,00019933479
782665Apr 17, 2014Apr 17, 2014Tandem Energy CorporationHardinChoate Fee #722,20019933472
782528Apr 17, 2014Apr 17, 2014Tandem Energy CorporationHardinChoate Fee #712,20019933471
770169Sep 27, 2013Sep 27, 2013Tandem Energy CorporationHardinChoate Fee #663,10019933453
770168Sep 27, 2013Sep 27, 2013Tandem Energy CorporationHardinChoate Fee #59R2,50019933452
770166Sep 27, 2013Sep 27, 2013Tandem Energy CorporationHardinChoate Fee #692,80019933451
763533Jun 26, 2013Jun 26, 2013Tandem Energy CorporationHardinChoate Fee #652,50019933441
765196Jun 25, 2013Jun 25, 2013Tandem Energy CorporationHardinChoate Fee #672,80019933446
757454Mar 5, 2013Mar 5, 2013Tandem Energy CorporationHardinChoate Fee #622,80019933421

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/835707, documented in the API reference.