OPERATORS · TEXAS · P-5 NUMBER 139618
Cass Energy LLC
- P-5 status
- Active (A)
- P-5 last filed
- Dec 4, 2025
- Based in
- MT Vernon, TX
Cass Energy LLC has filed no drilling permits in the past 12 months; its most recent permit was issued April 9, 2015.
The RRC wellbore file lists 23 wells under its operatorship (12 producing, 4 shut in).
Lease reports credit it with 9.56K barrels of oil and 0 mcf of gas in the 12 months reported through April 2026, down 27% on the year before.
It holds 4 active disposal or injection permits, injecting 235K barrels in the 12 months reported through June 2025.
2 drilling permits have been issued to this operator number since 2009; its P-5 organization report was last filed December 4, 2025.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 12
- producing wells, of 23 of record
- 23
- leases it reports
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED NOV 8, 2026
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.
All 2 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 →
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 →
- 9.56K
- bbl oil, last 12 reported months
- -27%
- vs the 12 months before
- 0
- mcf gas incl. casinghead, last 12
- 236K
- bbl oil since reporting began
12 months through Apr 2026 9,555 · prior 12 13,129(-27%)
Cass Energy 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 →
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 14.8K
- permitted bbl/day, active
- 235K
- bbl injected, last 12 reported months
- Jun 2025
- reported through
By county
| Cass | 4 active | 14.8K bbl/d |
All 5 permits, with volumes → · On the map →
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 →
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 |
|---|---|---|
| Haynes (Mitchell)39829664 | 22 | 12 |
| Rodessa (Anhydrite Lower)77807070 | 1 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status Active (A)
- Last filed Dec 4, 2025
- Gas operatorOil operator
- Address
- 310 Greenleaf Lane
- MT Vernon, TX 75457
- (318) 861-9222
- Officers and agents
- Fox, Mark · Texas Resident Agent
- Heaton, William · Manager
Latest permits
NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES
| Permit | Seen | Issued | Operator | County | Lease / well | Depth | API |
|---|---|---|---|---|---|---|---|
| 805248 | Apr 9, 2015 | Apr 9, 2015 | Cass Energy LLC | Cass | Grogan Minerals #1 | 6,250 | 06700420 |
| 682023 | Jun 10, 2009 | Jun 10, 2009 | Cass Energy LLC | Cass | Whelan-Bivins SWD #2 | 3,000 | 06730760 |
| 192909 | Apr 28, 1983 | Apr 28, 1983 | Latexo Oil & Gas | Cass | Moore, J. T. #01 | 7,000 | 06730419 |
| 192909Amendment | Apr 28, 1983 | Apr 28, 1983 | Whatley, O. B. | Cass | Moore, J. T. #1 | 6,725 | 06730419 |
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/139618, documented in the API reference.