OPERATORS · RRC 803400 · P-5 STATUS Y
Stemma Expl & Prod
Mansfield, TX
Watch this operatorStemma Expl & Prod has filed no drilling permits in the past 12 months; its most recent permit was issued November 21, 2002.
The RRC wellbore file lists 184 wells under its operatorship.
350 drilling permits have been issued to this operator number since 1977; its P-5 organization report was last filed August 8, 2003.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 0
- producing wells, of 184 of record
- 20
- 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.
- 21%
- spud rate · 74 of 350 mature permits
- 19
- median days permit to spud · middle half 5–59
- 0
- spuds, last 180 days
- 1%
- cancelled · 5 permits
- 271
- expired undrilled
- 13
- permits a year over 26 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 |
|---|---|---|---|---|
| Brown county → | — | 194 | 105 | Jun 23, 1997 |
| Stephens county → | — | 81 | 24 | Aug 7, 1996 |
| Eastland county → | — | 45 | 35 | Sep 18, 1991 |
| Shackelford county → | — | 12 | 8 | Sep 4, 1987 |
| Runnels county → | — | 5 | 1 | Sep 26, 1985 |
| Tarrant county → | — | 5 | 0 | Jun 19, 1997 |
| Comanche county → | — | 4 | 11 | Nov 15, 1984 |
| Erath county → | — | 1 | 0 | Nov 21, 2002 |
| Red River county → | — | 1 | 0 | Dec 1, 1978 |
| Throckmorton county → | — | 1 | 0 | Aug 21, 1984 |
| Wise county → | — | 1 | 0 | Dec 28, 1983 |
All 350 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 |
|---|---|---|
| Caddo | 74 | 0 |
| Duffer | 55 | 0 |
| Marble Falls | 31 | 0 |
| Ellenburger | 26 | 0 |
| Mississippian | 12 | 0 |
| Barnett | 10 | 0 |
| Strawn | 5 | 0 |
| Atoka | 3 | 0 |
| Canyon | 2 | 0 |
| Smithwick | 2 | 0 |
| Palo Pinto | 2 | 0 |
| Big Saline | 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
- 123K
- 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
- 184
- on the schedule
- 0
- producing
- 0
- shut in
- 0
- injection
- 0
- temp. abandoned
- 154
- plugged
How it got them
- 118
- permitted itself
- 18
- acquired from others
- 89
- 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 14
- 0
- permitted bbl/day, active
- 0
- bbl injected, last 12 reported months
- Jun 2025
- reported through
By county
| Brown | 0 active | 0 bbl/d |
| Eastland | 0 active | 0 bbl/d |
| Shackelford | 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 | 321 |
| Recompletion | 0 | 0 | 22 |
| Other | 0 | 0 | 6 |
| 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 |
|---|---|---|
| Brown County Regular12406001 | 32 | 0 |
| Brown Co. Regular (Marble Falls)12406500 | 27 | 0 |
| JMJ (Marble Falls)45100500 | 16 | 0 |
| Winfrey (Blake Sd.)97990500 | 14 | 0 |
| Williams (Marble Falls)97601600 | 12 | 0 |
| Duster NE. (Marble Falls 2750)26784600 | 10 | 0 |
| Plumb (Ranger Lower)71968500 | 9 | 0 |
| Murdoch (Duffer)63859500 | 7 | 0 |
| Penn (Ranger)70490800 | 6 | 0 |
| Bloomquist (Lake Sand)9689500 | 6 | 0 |
| Stephens County Regular (Gas)85948100 | 6 | 0 |
| Jett (Ellenburger)46320500 | 5 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Aug 8, 2003
- Address
- PO Box 2047
- Mansfield, TX 76063
- Officers and agents
- Kendrick, Melissa · Vice President
- Clark, Robert Lee · Vice President
- Elton, Sharon · 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 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/803400, documented in the API reference.