OPERATORS · RRC 123876 · P-5 STATUS Y
Calk, Roger D.
Lytle, TX
Watch this operatorCalk, Roger D. has filed no drilling permits in the past 12 months.
The RRC wellbore file lists 101 wells under its operatorship (82 producing).
Lease reports credit it with 2.67K barrels of oil and 0 mcf of gas in the 12 months reported through April 2026, down 7% on the year before.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 82
- producing wells, of 101 of record
- 28
- 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 →
- 2.67K
- bbl oil, last 12 reported months
- -7%
- vs the 12 months before
- 0
- mcf gas incl. casinghead, last 12
- 223K
- bbl oil since reporting began
Oil, barrels
Last 12 months 2,673 · prior 12 2,879(-7%)
Beyond the permit record
RRC wellbore file
Wells of record
- 101
- on the schedule
- 82
- producing
- 0
- shut in
- 0
- injection
- 0
- temp. abandoned
- 11
- plugged
How it got them
- 0
- permitted itself
- 100
- 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 →
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.
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Apr 4, 2026
- Oil operator
- Address
- PO Box 94
- Lytle, TX 78052
- (830) 772-4068
- Officers and agents
- Calk, Roger D. · Manager,sole Proprietor
Latest permits
NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES
| Permit | Seen | Issued | Operator | County | Lease / well | Depth | API |
|---|---|---|---|---|---|---|---|
| 326745 | Feb 19, 1987 | Feb 19, 1987 | Campbell, L. W. | Atascosa | Oldjamie Oil #6 | 2,500 | 01333806 |
| 288059 | Oct 22, 1985 | Oct 22, 1985 | Emery Energy, Inc. | Bexar | Richardson, W. A. - Emery #8 | 1,300 | 02936801 |
| 288059 | Oct 22, 1985 | Oct 22, 1985 | Emery Energy, Inc. | Bexar | Richardson-Emery, W. A. #8 | 11,322 | 02936801 |
| 286565 | Oct 4, 1985 | Oct 4, 1985 | Keeling, George W. | Bexar | Keeling, G. W. #5 | 1,900 | 02936731 |
| 286425 | Oct 3, 1985 | Oct 3, 1985 | Emery Energy, Inc. | Bexar | Richardson, W.A.-Emery #9 | 1,300 | 02936728 |
| 285766 | Sep 23, 1985 | Sep 23, 1985 | Campbell, L. W. | Atascosa | Oldjamie Oil #5 | 2,500 | 01333545 |
| 280079 | Jul 12, 1985 | Jul 12, 1985 | Campbell, L. W. | Atascosa | Oldjamie Oil #4 | 2,500 | 01333458 |
| 272939 | Apr 19, 1985 | Apr 19, 1985 | Campbell, L. W. | Atascosa | Oldjamie Oil #3 | 2,500 | 01333344 |
| 260758 | Dec 11, 1984 | Dec 11, 1984 | Campbell, L. W. | Atascosa | Oldjamie Oil Lease #2 | 2,500 | 01333052 |
| 255774 | Oct 26, 1984 | Oct 26, 1984 | Campbell, L. W. | Atascosa | Oldjamie Oil #1 | 2,200 | 01332994 |
| 251773 | Sep 19, 1984 | Sep 19, 1984 | Chase-Mann Petroleum Incorp. | Atascosa | Diamond Head "B" #5 | 2,500 | 01332941 |
| 251749 | Sep 19, 1984 | Sep 19, 1984 | Chase-Mann Petroleum Incorp. | Atascosa | Diamond Head "A" #4 | 2,500 | 01332940 |
| 239266 | May 18, 1984 | May 18, 1984 | Chase-Mann Petroleum Incorp. | Atascosa | Diamond Head "A" #3 | 2,500 | 01332733 |
| 220266 | Nov 9, 1983 | Nov 9, 1983 | Dicoil Production-Wes Dick | Bexar | Nixon #1 | 1,400 | 02934597 |
| 220265 | Nov 9, 1983 | Nov 9, 1983 | Dicoil Production-Wes Dick | Bexar | Nixon #2 | 1,400 | 02934596 |
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/123876, documented in the API reference.