OPERATORS · TEXAS · P-5 NUMBER 142450
Chalmers Operating Co., Inc.
- P-5 status
- Inactive (I)
- P-5 last filed
- Dec 19, 1985
- Based in
- Abilene, TX
Chalmers Operating CO., Inc. has filed no drilling permits in the past 12 months; its most recent permit was issued November 8, 1985.
The RRC wellbore file lists 65 wells under its operatorship.
320 drilling permits have been issued to this operator number since 1978; its P-5 organization report was last filed December 19, 1985.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 0
- producing wells, of 65 of record
- 0
- leases it reports
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED NOV 8, 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.
- 57%
- spud rate · 184 of 320 mature permits
- 25
- median days permit to spud · middle half 7–61
- 0
- spuds, last 180 days
- 2%
- canceled · 5 permits
- 130
- expired undrilled
- 40
- permits a year over 8 active years
Permits issued by month
LAST 60 MONTHS · BY ISSUE DATE
Last 12 months 0 · prior 12 0
Counties
Counties by permits in the last 12 months, with all-time permits and current wells of record there.
| County | 12 mo | All time | Wells | Last |
|---|---|---|---|---|
| Jones county → | — | 121 | 17 | Oct 14, 1985 |
| Taylor county → | — | 66 | 13 | Nov 8, 1985 |
| Shackelford county → | — | 38 | 6 | Jun 25, 1985 |
| Comanche county → | — | 15 | 3 | Apr 6, 1983 |
| Haskell county → | — | 15 | 1 | Sep 20, 1985 |
| Nolan county → | — | 13 | 2 | May 1, 1984 |
| Fisher county → | — | 9 | 0 | Nov 7, 1984 |
| Palo Pinto county → | — | 9 | 2 | Jul 6, 1983 |
| Coke county → | — | 7 | 2 | Nov 13, 1984 |
| Callahan county → | — | 6 | 5 | Sep 17, 1985 |
| Runnels county → | — | 4 | 3 | Sep 19, 1985 |
| Coleman county → | — | 3 | 5 | Sep 2, 1980 |
| Eastland county → | — | 3 | 4 | Aug 25, 1982 |
| Stonewall county → | — | 3 | 0 | May 29, 1984 |
| Cottle county → | — | 2 | 0 | Mar 3, 1981 |
| McCulloch county → | — | 1 | 0 | Dec 15, 1980 |
| Menard county → | — | 1 | 0 | Sep 5, 1979 |
| Motley county → | — | 1 | 0 | Apr 28, 1982 |
| Stephens county → | — | 1 | 1 | Aug 28, 1979 |
| Throckmorton county → | — | 1 | 0 | Apr 25, 1979 |
| Tom Green county → | — | 1 | 0 | Oct 14, 1980 |
All 320 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 |
|---|---|---|
| Saddle Creek | 11 | 0 |
| Palo Pinto | 7 | 0 |
| Strawn | 5 | 0 |
| Ellenburger | 4 | 0 |
| Bend | 4 | 0 |
| Marble Falls | 4 | 0 |
| Canyon | 3 | 0 |
| Mississippian | 3 | 0 |
| Caddo | 3 | 0 |
| Duffer | 2 | 0 |
| Tannehill | 1 | 0 |
| Gunsight | 1 | 0 |
| Coleman Junction | 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 ten years.
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 →
RRC UIC permits · H-10 reported volumes
Disposal and injection
- 0
- permitted bbl/day, active
- 0
- bbl injected, last 12 reported months
- Jun 2025
- reported through
By county
| Eastland | 0 active | 0 bbl/d |
| Jones | 0 active | 0 bbl/d |
| Taylor | 0 active | 0 bbl/d |
| Palo Pinto | 0 active | 0 bbl/d |
| Shackelford | 0 active | 0 bbl/d |
All 8 permits, with volumes → · On the map →
Permitted volume is a ceiling, not throughput. How to read it →
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 | 300 |
| Other | 0 | 0 | 19 |
| Recompletion | 0 | 0 | 1 |
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 |
|---|---|---|
| Jones County Regular47113001 | 11 | 0 |
| Taylor County Regular88520001 | 11 | 0 |
| Callahan County Regular14820001 | 3 | 0 |
| Wildcat16001 | 3 | 0 |
| Shackelford County Regular82522001 | 2 | 0 |
| Coleman County Regular19511001 | 2 | 0 |
| Wendkirk East (Swastika)96325500 | 2 | 0 |
| Charlie S (Mississippi)17231375 | 2 | 0 |
| Big Moose (Canyon)8000500 | 2 | 0 |
| Gregory-Fortune (Cross Plains)36837500 | 2 | 0 |
| Foster (Marble Falls)32300500 | 2 | 0 |
| Mittie (Marble Falls)62229666 | 2 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status Inactive (I)
- Last filed Dec 19, 1985
- Address
- 744 Hickory Street
- Abilene, TX 79601
- (325) 673-3708
- Officers and agents
- Chalmers, John H. · Chairman
- Foster, Linda · Secretary
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 by the operator that filed them, through the statewide reported-through month; disposal from UIC permits and H-10 reports. Oil includes condensate from gas leases and gas includes casinghead gas from oil leases, as the RRC totals them. Summary figures are rebuilt nightly. Nothing is estimated.
Developers: this page as JSON is GET /v1/data/operators/tx/142450, documented in the API reference.