OPERATORS · RRC 750400 · P-5 STATUS Y
Schalk Oil Co, Inc
Wichita Falls, TX · most active in Dickens County
Watch this operatorSchalk Oil CO, Inc was issued 1 drilling permit in the past 12 months, after a quiet prior year, all in Dickens County. 0% were horizontal.
None were issued in the past 90 days.
The RRC wellbore file lists 90 wells under its operatorship (23 producing, 4 shut in).
Lease reports credit it with 47.2K barrels of oil and 40.4K mcf of gas in the 12 months reported through April 2026, down 5% on the year before.
It holds 13 active disposal or injection permits, injecting 1.37M barrels in the 12 months reported through June 2025.
184 drilling permits have been issued to this operator number since 1995; its P-5 organization report was last filed February 4, 2026.
- 1
- permits, last 12 months
- —
- vs prior 12 months (0)
- 1
- counties, 12 months
- 23
- producing wells, of 90 of record
- 62
- leases it reports
- 0%
- 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.
- 91%
- spud rate · 168 of 184 mature permits
- 11
- median days permit to spud · middle half 6–24
- 0
- spuds, last 180 days
- 0%
- cancelled · 0 permits
- 16
- expired undrilled
- 6
- permits a year over 32 active years
Permits issued by month
LAST 5 MONTHS · BY ISSUE DATE
Last 12 months 5
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 |
|---|---|---|---|---|
| Dickens county → | 1 | 129 | 48 | Apr 20, 2026 |
| King county → | — | 19 | 5 | Oct 30, 2017 |
| Stonewall county → | — | 9 | 1 | Nov 20, 2018 |
| McCulloch county → | — | 7 | 1 | Oct 14, 1998 |
| Kent county → | — | 6 | 0 | Apr 4, 2022 |
| Haskell county → | — | 4 | 1 | Mar 20, 2013 |
| Knox county → | — | 3 | 1 | Jan 27, 2020 |
| Ector county → | — | 2 | 1 | Apr 18, 2005 |
| Concho county → | — | 1 | 0 | Oct 19, 2021 |
| Foard county → | — | 1 | 0 | Mar 25, 2004 |
| Hardeman county → | — | 1 | 0 | Jul 31, 2007 |
| Montague county → | — | 1 | 0 | Feb 13, 1996 |
| Wilbarger county → | — | 1 | 0 | Jun 1, 2009 |
All 184 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 |
|---|---|---|
| Tannehill | 42 | 0 |
| Coleman Junction | 4 | 0 |
| Saddle Creek | 3 | 0 |
| Caddo | 2 | 0 |
| Cisco | 2 | 0 |
| Canyon | 1 | 0 |
| Queen | 1 | 0 |
| San Andres | 1 | 0 |
| Glorieta | 1 | 0 |
| Strawn | 1 | 0 |
| Bend | 1 | 0 |
| Mississippian | 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 →
- 47.2K
- bbl oil, last 12 reported months
- -5%
- vs the 12 months before
- 40.4K
- mcf gas incl. casinghead, last 12
- 5.26M
- bbl oil since reporting began
Oil, barrels
Last 12 months 47,214 · prior 12 49,550(-5%)
Gas, mcf
Last 12 months 40,443 · prior 12 0
Beyond the permit record
RRC wellbore file
Wells of record
- 90
- on the schedule
- 23
- producing
- 4
- shut in
- 7
- injection
- 1
- temp. abandoned
- 40
- plugged
How it got them
- 57
- permitted itself
- 23
- acquired from others
- 99
- 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
- 13
- active UIC permits of 17
- 22.1K
- permitted bbl/day, active
- 1.37M
- bbl injected, last 12 reported months
- Jun 2025
- reported through
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 | 1 | 0 | 179 |
| Recompletion | 0 | 0 | 4 |
| 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 |
|---|---|---|
| Alvord (Caddo Conglomerate)2143355 | 27 | 1 |
| Soldier Mound (Tannehill)84521380 | 16 | 9 |
| Girard E. (Tannehill)35047375 | 13 | 6 |
| Soldier Mound (Stockwether)84521375 | 10 | 1 |
| Espuela (Tannehill)29401380 | 5 | 2 |
| Tumbleweed NE. (Tannehill)91783700 | 5 | 2 |
| Alvord (Atoka Conglomerate)2143071 | 2 | 0 |
| Alvord South (Caddo Lime)2148830 | 2 | 1 |
| Dockum Creek (Tannehill)25091150 | 2 | 1 |
| Ins (Lower Tannehill a )44113240 | 2 | 0 |
| Wildcat16001 | 1 | 0 |
| Double -H- (Grayburg)25742500 | 1 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Feb 4, 2026
- Gas operatorOil operator
- Address
- 4245 Kemp Blvd Ste 412
- Wichita Falls, TX 76308
- (940) 782-6460
- Officers and agents
- Schalk, John T. · Texas Resident Agent
- Schalk, John T. · President,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 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/750400, documented in the API reference.