OPERATORS · RRC 139634 · P-5 STATUS Y
Castillo Oil Company LLC
Luling, TX
Watch this operatorCastillo Oil Company LLC has filed no drilling permits in the past 12 months.
The RRC wellbore file lists 101 wells under its operatorship (66 producing, 4 shut in).
Lease reports credit it with 6.52K barrels of oil and 0 mcf of gas in the 12 months reported through April 2026, down 17% on the year before.
It holds 2 active disposal or injection permits, injecting 18.3K barrels in the 12 months reported through June 2025.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 66
- producing wells, of 101 of record
- 25
- leases it reports
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 2026
Where
No permits on file under this operator number. Counties of its wells of record, from the RRC wellbore file.
All 0 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 →
- 6.52K
- bbl oil, last 12 reported months
- -17%
- vs the 12 months before
- 0
- mcf gas incl. casinghead, last 12
- 168K
- bbl oil since reporting began
Oil, barrels
Last 12 months 6,524 · prior 12 7,842(-17%)
Beyond the permit record
RRC wellbore file
Wells of record
- 101
- on the schedule
- 66
- producing
- 4
- shut in
- 1
- injection
- 0
- temp. abandoned
- 27
- plugged
How it got them
- 0
- permitted itself
- 22
- 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 →
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 2
- active UIC permits of 2
- 620
- permitted bbl/day, active
- 18.3K
- bbl injected, last 12 reported months
- Jun 2025
- reported through
By county
| Caldwell | 2 active | 620 bbl/d |
Permitted volume is a ceiling, not throughput. How to read it →
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 |
|---|---|---|
| Luling-Branyon55679001 | 78 | 55 |
| Salt Flat79905001 | 8 | 3 |
| Kaye (Navarro)48380333 | 7 | 0 |
| Salt Flat West79912100 | 5 | 5 |
| Tenney Creek88824001 | 3 | 3 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Feb 4, 2026
- Oil operator
- Address
- P O Box 881
- Luling, TX 78648
- (512) 393-4616
- Officers and agents
- Castillo, Juan R. · President
- Castillo, Jose Manuel · Secretary,vice President
- Castillo, Francisco · Secretary
Latest permits
NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES
| Permit | Seen | Issued | Operator | County | Lease / well | Depth | API |
|---|---|---|---|---|---|---|---|
| 303187 | Jun 12, 1986 | Jun 12, 1986 | Duke Oil Co. | Caldwell | Monarch #1 | 3,000 | 05534115 |
| 301796 | Apr 28, 1986 | Apr 28, 1986 | Duke Oil Co. | Caldwell | Duke #4 | 2,800 | 05534106 |
| 300523 | Mar 28, 1986 | Mar 28, 1986 | Duke Oil Co. | Caldwell | Ellison #3 | 2,800 | 05534095 |
| 298215 | Feb 21, 1986 | Feb 21, 1986 | Continental Gulf Corp. | Caldwell | Moses, C. V. #1 | 2,900 | 05534085 |
| 295431 | Jan 15, 1986 | Jan 15, 1986 | Hollub, Lambert Drilling Company | Caldwell | Robertson #5 | 3,000 | 05534065 |
| 287115 | Oct 9, 1985 | Oct 9, 1985 | Tri-City Oil Company | Caldwell | Blackwell, Raym. #42 | 2,500 | 05533997 |
| 274567 | May 7, 1985 | May 7, 1985 | Tri-City Oil Company | Caldwell | Raym, Blackwell #41 | 2,500 | 05533894 |
| 269011 | Mar 11, 1985 | Mar 11, 1985 | Hollub, Lambert Drilling Company | Caldwell | Robertson #4 | 3,000 | 05533857 |
| 261207 | Dec 14, 1984 | Dec 14, 1984 | Hollub, Lambert Drilling Company | Caldwell | Robertson #3 | 2,800 | 05533759 |
| 257222 | Nov 8, 1984 | Nov 8, 1984 | Tri-City Oil Company | Caldwell | Blackwell, Raym. #40 | 2,500 | 05533715 |
| 262324 | Oct 27, 1984 | Oct 27, 1984 | Johnstone, Charles W. | Wilson | Heaslet #10 | 2,675 | 49331664 |
| 254634 | Oct 15, 1984 | Oct 15, 1984 | Johnstone, Charles W. | Wilson | Heaslet #8 | 2,675 | 49331628 |
| 217707 | Oct 19, 1983 | Oct 19, 1983 | Delray Oil, Inc. | Caldwell | Leyendecker, R. F. #20 | 2,350 | 05533440 |
| 213300 | Sep 20, 1983 | Sep 20, 1983 | Hollub, Lambert Drilling Company | Caldwell | Robertson #2 | 2,800 | 05533379 |
| 205897 | Aug 16, 1983 | Aug 16, 1983 | Delray Oil, Inc. | Caldwell | Leyendecker, R. F. #19 | 2,350 | 05533283 |
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/139634, documented in the API reference.