OPERATORS · RRC 100156 · P-5 STATUS Y
Castlerock EF Oper LLC
San Antonio, TX
Watch this operatorCastlerock EF Oper LLC has filed no drilling permits in the past 12 months; its most recent permit was issued September 25, 2024.
The RRC wellbore file lists 56 wells under its operatorship (29 producing, 27 shut in).
Lease reports credit it with 627K barrels of oil and 1.01M mcf of gas in the 12 months reported through April 2026, down 44% on the year before.
34 drilling permits have been issued to this operator number since 2014; its P-5 organization report was last filed November 4, 2025.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 29
- producing wells, of 56 of record
- 17
- 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.
- 82%
- spud rate · 28 of 34 mature permits
- 24
- median days permit to spud · middle half 16–48
- 0
- spuds, last 180 days
- 0%
- cancelled · 0 permits
- 6
- expired undrilled
- 3
- permits a year over 11 active years
Permits issued by month
LAST 6 MONTHS · BY ISSUE DATE
Last 12 months 32
Where
Counties by permits in the last 12 months, with all-time permits and current wells of record there.
All 34 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 |
|---|---|---|
| Austin Chalk | 18 | 8 |
| Anacacho | 16 | 7 |
| Eagle Ford | 15 | 5 |
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 →
- 627K
- bbl oil, last 12 reported months
- -44%
- vs the 12 months before
- 1.01M
- mcf gas incl. casinghead, last 12
- 3.53M
- bbl oil since reporting began
Oil, barrels
Last 12 months 626,838 · prior 12 1,122,305(-44%)
Gas, mcf
Last 12 months 1,006,469 · prior 12 1,422,808(-29%)
Beyond the permit record
RRC wellbore file
Wells of record
- 56
- on the schedule
- 29
- producing
- 27
- shut in
- 0
- injection
- 0
- temp. abandoned
- 0
- plugged
How it got them
- 18
- permitted itself
- 38
- acquired from others
- 0
- permitted, now run by others
Acquired means the well's permit names a different operator than the schedule does today. 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 |
|---|---|---|---|
| Drill | 0 | 0 | 34 |
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 |
|---|---|---|
| Eagleville (Eagle Ford-1)27135700 | 56 | 29 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Nov 4, 2025
- Oil operator
- Address
- 111 Tower Drive Suite 300
- San Antonio, TX 78232
- (210) 688-4585
- Officers and agents
- Amend, Chapman · Member
- CE 2 III LLC · Manager
- Goudge, Elliott · Member
- Kloss, Travis · Member
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/100156, documented in the API reference.