OPERATORS · TEXAS · P-5 NUMBER 433073
JM Calk Operating, LLC
- P-5 status
- Active (A)
- P-5 last filed
- Feb 11, 2026
- Based in
- Lytle, TX
- Most permits, 12 months
- Bexar County
JM Calk Operating, LLC was issued 7 drilling permits in the past 12 months, after a quiet prior year, all in Bexar County. 0% were horizontal.
None were issued in the past 90 days.
The RRC wellbore file lists 26 wells under its operatorship (25 producing, 1 shut in).
Lease reports credit it with 3.31K barrels of oil and 0 mcf of gas in the 12 months reported through April 2026, down 46% on the year before.
7 drilling permits have been issued to this operator number since 2025; its P-5 organization report was last filed February 11, 2026.
- 7
- permits, last 12 months
- —
- vs prior 12 months (0)
- 1
- counties, 12 months
- 25
- producing wells, of 26 of record
- 7
- leases it reports
- 0%
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED NOV 7, 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.
- 0%
- spud rate · 0 of 7 mature permits
- —
- median days permit to spud
- 0
- spuds, last 180 days
- 0%
- canceled · 0 permits
- 7
- expired undrilled
- 7
- permits a year over 1 active year
Permits issued by month
LAST 60 MONTHS · BY ISSUE DATE
Last 12 months 7 · prior 12 0
Counties
Counties by permits in the last 12 months, with all-time permits and current wells of record there.
All 7 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 |
|---|---|---|
| No completion tops on file. | ||
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 →
- 3.31K
- bbl oil, last 12 reported months
- -46%
- vs the 12 months before
- 0
- mcf gas incl. casinghead, last 12
- 35.2K
- bbl oil since reporting began
12 months through Apr 2026 3,306 · prior 12 6,178(-46%)
JM Calk Operating, LLC: Oil by month.
Beyond the permit record
RRC wellbore file
Wells of record
How it got them
Each count opens the wells it counts. Acquired means the well's permit names a different operator than the schedule does today; wells it permitted that others now run are in its permit history, marked with who runs them now. 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 →
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 |
|---|---|---|
| Fairfield30007001 | 24 | 24 |
| Stacy (Olmos -A-)85457500 | 2 | 1 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status Active (A)
- Last filed Feb 11, 2026
- Oil operator
- Address
- PO Box 2049
- Lytle, TX 78052
- (210) 617-8101
- Officers and agents
- Calk, Joseph · Texas Resident Agent
- Calk, Joseph Martin · Manager
- Calk, Shirley Ann · Manager
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/433073, documented in the API reference.