OPERATORS · RRC 178380 · P-5 STATUS Y
Core Dev, Inc
Mansfield, TX
Watch this operatorCore Dev, Inc has filed no drilling permits in the past 12 months; its most recent permit was issued October 19, 1989.
2 drilling permits have been issued to this operator number since 1989; its P-5 organization report was last filed October 22, 1991.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 0
- producing wells, of 0 of record
- 0
- leases it reports
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 2026
Where
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 →
| Formation | Wells | Permitted last 3 yrs |
|---|---|---|
| Caddo | 2 | 0 |
| Marble Falls | 2 | 0 |
| Palo Pinto | 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 →
- 0
- bbl oil, last 12 reported months
- —
- vs the 12 months before
- 0
- mcf gas incl. casinghead, last 12
- 0
- bbl oil since reporting began
No lease production reported under this operator number in the last three years.
Beyond the permit record
RRC wellbore file
Wells of record
- 0
- on the schedule
- 0
- producing
- 0
- shut in
- 0
- injection
- 0
- temp. abandoned
- 0
- plugged
How it got them
- 0
- permitted itself
- 0
- acquired from others
- 2
- 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 | 2 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Oct 22, 1991
- Address
- P.O. Box 208
- Mansfield, TX 76063
- Officers and agents
- Muennink, Lloyd A. · Texas Resident Agent
- Neal, Robert G. · President
- Brown, David W. · Vice President
- Muennink, Lloyd A. · Secretary
Latest permits
NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES
| Permit | Seen | Issued | Operator | County | Lease / well | Depth | API |
|---|---|---|---|---|---|---|---|
| 365367 | Oct 19, 1989 | Oct 19, 1989 | Core Development, Inc. | Jack | Sims #1 | 6,100 | 23737676 |
| 364571 | Sep 28, 1989 | Sep 28, 1989 | Core Development, Inc. | Jack | Blanton #1 | 6,300 | 23737668 |
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/178380, documented in the API reference.