OPERATORS · RRC 840402 · P-5 STATUS Y

TDC Expl Inc

Austin, TX

Tdc Expl Inc has filed no drilling permits in the past 12 months; its most recent permit was issued December 28, 1982.

The RRC wellbore file lists 13 wells under its operatorship.

49 drilling permits have been issued to this operator number since 1979; its P-5 organization report was last filed September 16, 1983.

0: permits, last 12 months
—: vs prior 12 months (0)
0: counties, 12 months
0: producing wells, of 13 of record
0: 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.

16%: spud rate · 8 of 49 mature permits
45: median days permit to spud · middle half 28–56
0: spuds, last 180 days
0%: cancelled · 0 permits
41: expired undrilled
12: permits a year over 4 active years

Where

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

County	12 mo	All time	Wells	Last
Sabine county →	—	26	4	Jul 30, 1982
Fayette county →	—	8	5	Mar 18, 1982
Trinity county →	—	5	0	Mar 29, 1982
Angelina county →	—	4	1	Dec 18, 1981
Tyler county →	—	3	0	Mar 19, 1982
Burleson county →	—	1	1	Dec 28, 1982
Colorado county →	—	1	0	Jan 19, 1982
Lee county →	—	1	2	Aug 13, 1980

All 49 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 →

Formation	Wells	Permitted last 3 yrs
Wilcox	1	0
Pecan Gap	1	0
Austin Chalk	1	0

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
0: bbl oil since reporting began

No lease production reported under this operator number in the last three years.

Beyond the permit record

RRC wellbore file

Wells of record

13: on the schedule
0: producing
0: shut in
0: injection
0: temp. abandoned
13: plugged

How it got them

3: permitted itself
10: acquired from others
13: 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 1
0: permitted bbl/day, active
0: bbl injected, last 12 reported months
Jun 2025: reported through

By county

Fayette

0 active

0 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 →

Type	12 mo	Prior 12	All time
Drill	0	0	47
Other	0	0	1
Recompletion	0	0	1

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.

Field	Wells	Producing
Giddings (Austin Chalk-3)34733500	6	0
Hemphill (Saratoga-Annona)40311890	3	0
Giddings (Austin Chalk Gas)34773550	1	0
Giddings (Wilcox 3200)34733630	1	0
Hemphill (Austin Chalk)40305250	1	0
Zavalla99715100	1	0

P-5 organization report

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

Registration: Status code Y; Last filed Sep 16, 1983

Address: P O Box 1966; Austin, TX 78767

Officers and agents: Coffman, Thomas D. · President; Patterson, Lin · Vice President; Sheehan, Patrick J. · Vice President

Latest permits

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

Permit	Seen	Issued	Operator	County	Lease / well	Depth	API
450150	Jul 9, 1996	Jul 9, 1996	Heartland Resources, Inc.	Lee	Chapple-Rosenbaum #3	3,300	28730767
450150	Jul 9, 1996	Jul 9, 1996	Heartland Resources, Inc.	Lee	Chapple-Rosenbaum #3	3,300	28730767
181385	Dec 28, 1982	Dec 28, 1982	TDC Exploration Inc.	Burleson	Robertson Unit #1	6,552	05130787
167753	Jul 30, 1982	Jul 30, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "5" #32	5,800	40330236
167750	Jul 30, 1982	Jul 30, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "5" #33	5,800	40330237
167748	Jul 30, 1982	Jul 30, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "34" #38	6,500	40330235
167328	Jul 27, 1982	Jul 27, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "203" #34	6,100	40330234
166023	Jul 12, 1982	Jul 12, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "205" #36	5,100	40330233
166014	Jul 12, 1982	Jul 12, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "147" #37	6,100	40330247
164988	Jun 28, 1982	Jun 28, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "383" #26	5,700	40330231
164782	Jun 25, 1982	Jun 25, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "188" #29	5,400	40330230
164781	Jun 25, 1982	Jun 25, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "188" #28	5,000	40330229
162953	Jun 7, 1982	Jun 7, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "46-a" Unit #25	5,200	40330228
162831	Jun 4, 1982	Jun 4, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "269-A" #24	6,050	40330227
162829	Jun 4, 1982	Jun 4, 1982	TDC Exploration Inc.	Sabine	Temple-Eastex "264" #30	6,400	40330226

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/840402, documented in the API reference.