OPERATORS · RRC 911808 · P-5 STATUS Y
Western Chief Oper, L.L.C
Graham, TX
Watch this operatorWestern Chief Oper, L.L.C has filed no drilling permits in the past 12 months; its most recent permit was issued December 10, 2020.
The RRC wellbore file lists 49 wells under its operatorship (2 producing, 1 shut in).
38 drilling permits have been issued to this operator number since 2008; its P-5 organization report was last filed October 4, 2025.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 2
- producing wells, of 49 of record
- 57
- leases it reports
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 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.
- 89%
- spud rate · 34 of 38 mature permits
- 32
- median days permit to spud · middle half 12–51
- 0
- spuds, last 180 days
- 0%
- cancelled · 0 permits
- 4
- expired undrilled
- 3
- permits a year over 13 active years
Where
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 |
|---|---|---|---|---|
| Wise county → | — | 10 | 10 | Jan 21, 2011 |
| Ochiltree county → | — | 7 | 0 | Dec 10, 2020 |
| Scurry county → | — | 6 | 0 | Oct 5, 2018 |
| Houston county → | — | 4 | 0 | Mar 27, 2012 |
| Denton county → | — | 3 | 9 | Jul 7, 2009 |
| Anderson county → | — | 1 | 0 | May 6, 2010 |
| Hansford county → | — | 1 | 0 | Sep 30, 2019 |
| Haskell county → | — | 1 | 0 | Jun 25, 2008 |
| Howard county → | — | 1 | 0 | Mar 6, 2014 |
| Johnson county → | — | 1 | 4 | Aug 25, 2008 |
| Palo Pinto county → | — | 1 | 2 | Jan 13, 2012 |
| Throckmorton county → | — | 1 | 0 | May 16, 2008 |
| Wood county → | — | 1 | 0 | Jan 21, 2016 |
All 38 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 |
|---|---|---|
| Marble Falls | 12 | 0 |
| Barnett | 10 | 0 |
| Forestburg | 9 | 0 |
| Kansas City | 6 | 0 |
| Brown Dolomite | 6 | 0 |
| Cleveland | 6 | 0 |
| Douglas | 6 | 0 |
| Wolfcamp | 4 | 0 |
| Coleman Junction | 4 | 0 |
| San Andres | 4 | 0 |
| Yates | 4 | 0 |
| Glen Rose | 4 | 0 |
| Clear Fork | 4 | 0 |
| Buda | 3 | 0 |
| Georgetown | 3 | 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
- -100%
- vs the 12 months before
- 0
- mcf gas incl. casinghead, last 12
- 743K
- bbl oil since reporting began
Oil, barrels
Last 12 months 0 · prior 12 23,761(-100%)
Gas, mcf
Last 12 months 0 · prior 12 56,935(-100%)
Beyond the permit record
RRC wellbore file
Wells of record
- 49
- on the schedule
- 2
- producing
- 1
- shut in
- 0
- injection
- 3
- temp. abandoned
- 38
- plugged
How it got them
- 4
- permitted itself
- 43
- acquired from others
- 26
- 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
- 0
- active UIC permits of 2
- 0
- permitted bbl/day, active
- 0
- bbl injected, last 12 reported months
- Jun 2025
- reported through
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 | 34 |
| Recompletion | 0 | 0 | 3 |
| Reenter | 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 |
|---|---|---|
| Newark East (Barnett Shale)65280200 | 23 | 2 |
| McCutchin (Ellenburger)59241150 | 6 | 0 |
| Young County Regular99480001 | 4 | 0 |
| Monteath (Atoka Upper)62580100 | 2 | 0 |
| Wise County Regular98246001 | 2 | 0 |
| Park Springs (Congl.)69175500 | 2 | 0 |
| Ringo (Congl.)76800300 | 1 | 0 |
| Ringo (Cong.upper)76800302 | 1 | 0 |
| TJN (Strawn)87998800 | 1 | 0 |
| Blount (Buttram)9703500 | 1 | 0 |
| Young County Regular (Gas)99480498 | 1 | 0 |
| Box (Mississippi)10964300 | 1 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Oct 4, 2025
- G/PURGas operatorOil operator
- Address
- PO Box 1267
- Graham, TX 76450
- (940) 550-8708
- Officers and agents
- Nunley, Thomas J Jr · Manager
- Clearfield, Lawrence S · Manager
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 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/911808, documented in the API reference.