OPERATORS · TEXAS · P-5 NUMBER 776590
Shidler, Mark L., Inc.
- P-5 status
- Active (A)
- P-5 last filed
- Sep 1, 2026
- Based in
- Houston, TX
Shidler, Mark L., Inc. has filed no drilling permits in the past 12 months; its most recent permit was issued January 6, 2014.
The RRC wellbore file lists 29 wells under its operatorship (11 producing).
Lease reports credit it with 16.9K barrels of oil and 59.6K mcf of gas in the 12 months reported through August 2026, down 6% on the year before.
6 drilling permits have been issued to this operator number since 1992; its P-5 organization report was last filed September 1, 2026.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 11
- producing wells, of 36 of record
- 13
- leases it reports · 95 ever reported on
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED NOV 10, 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 · 4 of 6 mature permits
- 8
- median days permit to spud · middle half 4–28
- 0
- spuds, last 180 days
- 0%
- canceled · 0 permits
- 2
- expired undrilled
- 0
- permits a year over 22 active years
Permits issued by month
LAST 60 MONTHS · BY ISSUE DATE
Last 12 months 0 · prior 12 0
Counties
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 |
|---|---|---|---|---|
| Goliad county → | — | 2 | 1 | Dec 10, 1999 |
| Borden county → | — | 1 | 0 | Nov 15, 1999 |
| Clay county → | — | 1 | 0 | Dec 22, 1992 |
| Jones county → | — | 1 | 2 | Jan 6, 2014 |
| Liberty county → | — | 1 | 1 | Apr 9, 2003 |
All 6 permits, searchable → · Leases it reported on → · On the map →
Formations in wells it permitted
Tops reported on completion filings for wells permitted under this operator number, including wells others run today. RRC wellbore file. About tops →
| Formation | Wells | Permitted last 3 yrs |
|---|---|---|
| Leonard | 1 | 0 |
| Coleman Junction | 1 | 0 |
| Cook Mountain | 1 | 0 |
| Yegua | 1 | 0 |
| Vicksburg | 1 | 0 |
| Frio | 1 | 0 |
| Tannehill | 1 | 0 |
Production by month
PDQ LEASE REPORTS · REPORTED THROUGH AUG 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. From 95 leases it reported on; 41 are reported by other operators today; 41 are no longer on the schedule.How production is reported →
- 16.9K
- bbl oil, last 12 reported months
- -6%
- vs the 12 months before
- 59.6K
- mcf gas incl. casinghead, last 12
- 1.3M
- bbl oil since reporting began
12 months through Aug 2026 59,593 · prior 12 85,924(-31%)
Shidler, Mark L., Inc.: Gas by month.
Beyond the permit record
Operator of record and permit operator
A well's operator of record is the RRC's, and its permit operator is the one on its latest drilling permit; neither fills in for the other. Its wellbores of record are counted as its wells, with its live permits; a well it permitted that another operator runs, or that the RRC lists with no operator at all, is not. Each count opens the wells it counts. 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 →
| Type | 12 mo | Prior 12 | All time |
|---|---|---|---|
| Recompletion | 0 | 0 | 4 |
| Drill | 0 | 0 | 1 |
| Reenter | 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 |
|---|---|---|
| Newark East (Barnett Shale)65280200 | 4 | 2 |
| Hot Springs42818500 | 3 | 2 |
| Pearsall (Austin Chalk)69981125 | 2 | 0 |
| Giddings (Austin Chalk Gas)34773550 | 2 | 1 |
| Alyssa-Sadie (Canyon Reef)2173100 | 2 | 1 |
| Hordes Creek South (1950)42580400 | 1 | 0 |
| Lucky South (9300-B)55473825 | 1 | 0 |
| Mag (Austin Chalk)56653200 | 1 | 1 |
| Manor Lake East (Frio 9800)57201500 | 1 | 0 |
| Rancho Solo (Bruni)74554100 | 1 | 0 |
| Scottsville NW. (Pettit 6200)81776666 | 1 | 1 |
| Speaks S.W. (12010)84984991 | 1 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status Active (A)
- Last filed Sep 1, 2026
- Gas operatorOil operator
- Address
- 1313 Campbell RD Bldg D
- Houston, TX 77055
- (713) 481-6486
- Officers and agents
- Shidler, Mark L · President
- Shidler, Andrew M · Vice President
- Shidler, Jeffrey H · Vice President
- Shidler, Mitzi A · Vice President
Latest permits
NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES
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 by the operator that filed them, through the statewide reported-through month; disposal from UIC permits and H-10 reports. Oil includes condensate from gas leases and gas includes casinghead gas from oil leases, as the RRC totals them. Summary figures are rebuilt nightly. Nothing is estimated.
Developers: this page as JSON is GET /v1/data/operators/tx/776590, documented in the API reference.