OPERATORS · RRC 835630 · P-5 STATUS Y
Tamarack Petro Co, Inc
Midland, TX
Watch this operatorTamarack Petro CO, Inc has filed no drilling permits in the past 12 months; its most recent permit was issued July 26, 2017.
The RRC wellbore file lists 225 wells under its operatorship.
469 drilling permits have been issued to this operator number since 1977; its P-5 organization report was last filed August 6, 2021.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 0
- producing wells, of 225 of record
- 113
- 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.
- 65%
- spud rate · 305 of 469 mature permits
- 25
- median days permit to spud · middle half 9–52
- 0
- spuds, last 180 days
- 0%
- cancelled · 0 permits
- 164
- expired undrilled
- 11
- permits a year over 41 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 |
|---|---|---|---|---|
| Crockett county → | — | 70 | 3 | Jan 18, 2000 |
| Reagan county → | — | 64 | 50 | Nov 3, 2006 |
| Hockley county → | — | 54 | 22 | Feb 6, 2006 |
| Midland county → | — | 35 | 17 | Aug 21, 1989 |
| Cochran county → | — | 34 | 10 | Apr 20, 2006 |
| Martin county → | — | 26 | 7 | Aug 9, 1985 |
| Lubbock county → | — | 19 | 2 | Apr 1, 2010 |
| Upton county → | — | 17 | 2 | Mar 30, 1998 |
| Frio county → | — | 16 | 38 | Nov 17, 1992 |
| Glasscock county → | — | 15 | 10 | Apr 6, 1984 |
| Palo Pinto county → | — | 14 | 0 | Jul 26, 2017 |
| Gonzales county → | — | 13 | 9 | Sep 25, 1980 |
| Gaines county → | — | 12 | 3 | Sep 7, 2004 |
| Lavaca county → | — | 9 | 2 | May 12, 1998 |
| Jack county → | — | 7 | 1 | Jun 23, 2017 |
| Madison county → | — | 7 | 1 | Aug 24, 1981 |
| Reeves county → | — | 7 | 3 | Sep 9, 1988 |
| Andrews county → | — | 4 | 5 | Jan 8, 1993 |
| Schleicher county → | — | 4 | 2 | Feb 7, 1983 |
| Dawson county → | — | 3 | 0 | Aug 31, 1981 |
| Archer county → | — | 2 | 0 | Apr 8, 1982 |
| Borden county → | — | 2 | 6 | Mar 16, 1988 |
| Ector county → | — | 2 | 1 | Jun 22, 1981 |
| Loving county → | — | 2 | 1 | May 10, 1989 |
| Marion county → | — | 2 | 0 | Aug 22, 1986 |
| Nueces county → | — | 2 | 2 | Dec 16, 1977 |
| Parker county → | — | 2 | 1 | Feb 25, 2013 |
| Rusk county → | — | 2 | 0 | Jan 8, 1993 |
| Sterling county → | — | 2 | 0 | Jun 15, 1988 |
| Yoakum county → | — | 2 | 0 | Jan 28, 2004 |
| Anderson county → | — | 1 | 0 | Mar 6, 1995 |
| Baylor county → | — | 1 | 0 | Dec 17, 1982 |
| Brown county → | — | 1 | 1 | Oct 24, 2014 |
| Cass county → | — | 1 | 0 | Sep 23, 1988 |
| Colorado county → | — | 1 | 0 | Sep 6, 1995 |
| Eastland county → | — | 1 | 0 | Mar 21, 1979 |
| Fisher county → | — | 1 | 0 | Dec 8, 1982 |
| Freestone county → | — | 1 | 0 | Nov 30, 1990 |
| Goliad county → | — | 1 | 3 | Jun 23, 1995 |
| Howard county → | — | 1 | 2 | Jun 24, 1985 |
| Lee county → | — | 1 | 0 | Jun 8, 1981 |
| Leon county → | — | 1 | 0 | Jan 9, 1990 |
| Mitchell county → | — | 1 | 0 | Jan 20, 1988 |
| Pecos county → | — | 1 | 0 | Jul 29, 1981 |
| Shelby county → | — | 1 | 0 | Jun 14, 1983 |
| Smith county → | — | 1 | 0 | Sep 19, 1990 |
| Terry county → | — | 1 | 0 | Jul 6, 1984 |
| Wilson county → | — | 1 | 5 | Sep 16, 1981 |
| Wood county → | — | 1 | 0 | Jun 12, 1991 |
All 469 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 |
|---|---|---|
| Spraberry | 69 | 0 |
| Dean | 65 | 0 |
| Canyon | 53 | 0 |
| San Andres | 48 | 0 |
| Wolfcamp | 27 | 0 |
| Clear Fork | 26 | 0 |
| Jo Mill | 17 | 0 |
| Strawn | 15 | 0 |
| Devonian | 10 | 0 |
| Yates | 10 | 0 |
| Austin Chalk | 8 | 0 |
| Anacacho | 7 | 0 |
| Ellenburger | 6 | 0 |
| Glorieta | 6 | 0 |
| Marble Falls | 6 | 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
- 9.91M
- 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
- 225
- on the schedule
- 0
- producing
- 0
- shut in
- 0
- injection
- 0
- temp. abandoned
- 175
- plugged
How it got them
- 88
- permitted itself
- 4
- acquired from others
- 265
- 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 12
- 0
- permitted bbl/day, active
- 0
- bbl injected, last 12 reported months
- Jun 2025
- reported through
By county
| Andrews | 0 active | 0 bbl/d |
| Frio | 0 active | 0 bbl/d |
| Lubbock | 0 active | 0 bbl/d |
| Stonewall | 0 active | 0 bbl/d |
| Hockley | 0 active | 0 bbl/d |
| Cochran | 0 active | 0 bbl/d |
| Reagan | 0 active | 0 bbl/d |
| Gonzales | 0 active | 0 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 | 433 |
| Recompletion | 0 | 0 | 22 |
| Reenter | 0 | 0 | 12 |
| Other | 0 | 0 | 2 |
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 |
|---|---|---|
| Spraberry (Trend Area)85280300 | 62 | 0 |
| Pearsall (Austin Chalk)69981125 | 37 | 0 |
| Levelland53411001 | 28 | 0 |
| Parks (Spraberry)69233664 | 14 | 0 |
| Calvin (Dean)14937333 | 7 | 0 |
| Nixon65586001 | 6 | 0 |
| Bissett E. (Strawn Sand)8418500 | 6 | 0 |
| Kiowa Peak SE. (Strawn 1ST.)49586333 | 3 | 0 |
| Higgins (Buda Lime)41099250 | 3 | 0 |
| Cost (Austin Chalk)20899100 | 3 | 0 |
| JO-Mill (Spraberry)46564750 | 3 | 0 |
| Ozona (Canyon Sand)67995200 | 3 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Aug 6, 2021
- Address
- 303 W Wall St Ste 1901
- Midland, TX 79701
- (414) 276-0304
- Officers and agents
- Liem, Robert E. · Texas Resident Agent
- McKeithan-Gebhardt, Deborah · President
- Liem, Robert E. · Vice President
- Mirsberger, Thomas A · Vice President/Cfo
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/835630, documented in the API reference.