OPERATORS · RRC 902609 · P-5 STATUS Y
WB Mullin Oper LLC
Graham, TX
Watch this operatorWB Mullin Oper LLC has filed no drilling permits in the past 12 months; its most recent permit was issued June 20, 2018.
The RRC wellbore file lists 104 wells under its operatorship (44 producing, 15 shut in).
Lease reports credit it with 10.8K barrels of oil and 36.9K mcf of gas in the 12 months reported through April 2026, up 60% on the year before.
It holds 14 active disposal or injection permits, injecting 330K barrels in the 12 months reported through June 2025.
12 drilling permits have been issued to this operator number since 2013; its P-5 organization report was last filed July 4, 2026.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 44
- producing wells, of 104 of record
- 36
- 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.
- 75%
- spud rate · 9 of 12 mature permits
- 151
- median days permit to spud · middle half 15–302
- 0
- spuds, last 180 days
- 0%
- cancelled · 0 permits
- 3
- expired undrilled
- 2
- permits a year over 6 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 |
|---|---|---|---|---|
| Throckmorton county → | — | 10 | 28 | Jun 20, 2018 |
| Young county → | — | 2 | 57 | Mar 20, 2013 |
All 12 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 |
|---|---|---|
| Gunsight | 2 | 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 →
- 10.8K
- bbl oil, last 12 reported months
- +60%
- vs the 12 months before
- 36.9K
- mcf gas incl. casinghead, last 12
- 40.2K
- bbl oil since reporting began
Gas, mcf
Last 12 months 36,895 · prior 12 61,405(-40%)
Oil, barrels
Last 12 months 10,791 · prior 12 6,724(+60%)
Beyond the permit record
RRC wellbore file
Wells of record
- 104
- on the schedule
- 44
- producing
- 15
- shut in
- 9
- injection
- 1
- temp. abandoned
- 29
- plugged
How it got them
- 4
- permitted itself
- 55
- acquired from others
- 2
- 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
- 14
- active UIC permits of 19
- 3.93K
- permitted bbl/day, active
- 330K
- bbl injected, last 12 reported months
- Jun 2025
- reported through
By county
| Young | 5 active | 1.8K bbl/d |
| Throckmorton | 8 active | 1.38K bbl/d |
| Jack | 1 active | 750 bbl/d |
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 | 12 |
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 |
|---|---|---|
| Young County Regular99480001 | 33 | 11 |
| Throckmorton County Regular89812001 | 27 | 14 |
| Langston-Kleiner (Strawn)51982332 | 18 | 3 |
| Woodkirk (Strawn)98535666 | 8 | 5 |
| Jack County Regular (Gas)45274025 | 5 | 5 |
| Serendipity (Congl)82268200 | 3 | 1 |
| Serendipity (Strawn)82268500 | 2 | 0 |
| Palo Pinto Co. Reg. (Gas)68707333 | 2 | 1 |
| Garvey (3700)34076900 | 1 | 0 |
| Bartons Chapel S. (Strawn 3600)5974550 | 1 | 1 |
| Irwin (Mississippi)44780500 | 1 | 0 |
| Jack County Regular45274001 | 1 | 1 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Jul 4, 2026
- Gas operatorOil operator
- Address
- PO Box 1925
- Graham, TX 76450
- (469) 387-8046
- Officers and agents
- Mullin, William B · Managing Member,member
- Palmour, Vicki · Filing Agent
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/902609, documented in the API reference.