OPERATORS · RRC 148227 · P-5 STATUS Y
Chief Oper LLC
Dallas, TX
Watch this operatorChief Oper LLC has filed no drilling permits in the past 12 months; its most recent permit was issued September 5, 2007.
The RRC wellbore file lists 1 well under its operatorship.
47 drilling permits have been issued to this operator number since 2005; its P-5 organization report was last filed February 2, 2007.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 0
- producing wells, of 1 of record
- 1
- 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.
- 83%
- spud rate · 39 of 47 mature permits
- 142
- median days permit to spud · middle half 100–172
- 0
- spuds, last 180 days
- 0%
- cancelled · 0 permits
- 8
- expired undrilled
- 24
- permits a year over 2 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 |
|---|---|---|---|---|
| Denton county → | — | 23 | 1 | Aug 2, 2007 |
| Tarrant county → | — | 17 | 0 | Sep 5, 2007 |
| Parker county → | — | 4 | 0 | May 4, 2007 |
| Hood county → | — | 3 | 0 | Jan 18, 2007 |
All 47 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 |
|---|---|---|
| Barnett | 31 | 0 |
| Marble Falls | 31 | 0 |
| Caddo | 23 | 0 |
| Big Saline | 4 | 0 |
| Viola | 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 three years.
Beyond the permit record
RRC wellbore file
Wells of record
- 1
- on the schedule
- 0
- producing
- 0
- shut in
- 0
- injection
- 0
- temp. abandoned
- 0
- plugged
How it got them
- 1
- permitted itself
- 0
- acquired from others
- 32
- permitted, now run by others
Acquired means the well's permit names a different operator than the schedule does today. Transfers and operator numbers →
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 | 47 |
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 | 1 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Feb 2, 2007
- Address
- 5955 Sherry LN Ste 1500
- Dallas, TX 75225
- Officers and agents
- Rees-Jones, Trevor David · Manager/President
- Thomson, Cliff · Vice President
- Carvalho, Antone V. · Vice President
Latest permits
NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES
| Permit | Seen | Issued | Operator | County | Lease / well | Depth | API |
|---|---|---|---|---|---|---|---|
| 645393 | Sep 5, 2007 | Sep 5, 2007 | Chief Operating LLC | Tarrant | Alliance-Saratoga #B 2HH | 8,900 | 43932630 |
| 643100 | Aug 2, 2007 | Aug 2, 2007 | Chief Operating LLC | Denton | Alliance #D 4HH | 8,900 | 12133175 |
| 641812 | Jul 17, 2007 | Jul 17, 2007 | Chief Operating LLC | Denton | Alliance-Commerce #A 1HH | 8,900 | 12133164 |
| 641813 | Jul 14, 2007 | Jul 14, 2007 | Chief Operating LLC | Denton | Alliance-Commerce #A 2HH | 8,900 | 12133165 |
| 641807 | Jul 14, 2007 | Jul 14, 2007 | Chief Operating LLC | Denton | Alliance-Commerce #A 3HH | 8,900 | 12133163 |
| 640083 | Jun 13, 2007 | Jun 13, 2007 | Chief Operating LLC | Tarrant | Alliance "G" Unit #G 2HH | 8,900 | 43932304 |
| 640080 | Jun 12, 2007 | Jun 12, 2007 | Chief Operating LLC | Tarrant | Alliance "G" Unit #G 3HH | 8,900 | 43932303 |
| 637885 | May 4, 2007 | May 4, 2007 | Chief Operating LLC | Parker | Disciullo #1HH | 8,900 | 36734412 |
| 637880 | May 4, 2007 | May 4, 2007 | Chief Operating LLC | Denton | Alliance #D 3HH | 8,900 | 12133101 |
| 637879 | May 4, 2007 | May 4, 2007 | Chief Operating LLC | Parker | Disciullo #2HH | 8,900 | 36734411 |
| 637352 | Apr 26, 2007 | Apr 26, 2007 | Chief Operating LLC | Denton | Alliance-Tech Center #3HH | 8,900 | 12133097 |
| 637351 | Apr 26, 2007 | Apr 26, 2007 | Chief Operating LLC | Denton | Alliance #B 5HH | 8,900 | 12133098 |
| 634094 | Mar 1, 2007 | Mar 1, 2007 | Chief Operating LLC | Denton | Alliance-Hugg Unit #3HH | 8,900 | 12133055 |
| 634094 | Mar 1, 2007 | Mar 1, 2007 | Chief Operating LLC | Denton | Alliance-Hugg Unit #3HH | 8,900 | 12133055 |
| 634093 | Mar 1, 2007 | Mar 1, 2007 | Chief Operating LLC | Denton | Alliance-Hugg Unit #2HH | 8,900 | 12133057 |
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/148227, documented in the API reference.