OPERATORS · TEXAS · P-5 NUMBER 123876
Calk, Roger D.
- P-5 status
- Active (A)
- P-5 last filed
- Jun 3, 2026
- Based in
- Lytle, TX
Calk, Roger D. has filed no drilling permits in the past 12 months.
The RRC wellbore file lists 104 wells under its operatorship (92 producing, 1 shut in).
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
- 92
- producing wells, of 104 of record
- 28
- leases it reports
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED NOV 5, 2026
Permits issued by month
LAST 60 MONTHS · BY ISSUE DATE
Last 12 months 0 · prior 12 0
Counties
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
Last 12 months 2,673 · prior 12 2,879(-7%)
Calk, Roger D.: 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 →
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 Active (A)
- Last filed Jun 3, 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 |
| 261748 | Dec 19, 1984 | Dec 19, 1984 | Dicoil Production-Wes Dick | Bexar | Nixon #3 | 1,400 | 02936069 |
| 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 |
| 227001 | Jan 20, 1984 | Jan 20, 1984 | Chase-Mann Petroleum Incorp. | Atascosa | Diamond Head #2 | 2,500 | 01332523 |
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. Summary figures are rebuilt nightly. Nothing is estimated.
Developers: this page as JSON is GET /v1/data/operators/tx/123876, documented in the API reference.