OPERATORS · RRC 332483 · P-5 STATUS Y
Grelling Investments
Houston, TX
Watch this operatorGrelling Investments has filed no drilling permits in the past 12 months; its most recent permit was issued December 23, 1980.
The RRC wellbore file lists 1 well under its operatorship.
17 drilling permits have been issued to this operator number since 1977; its P-5 organization report was last filed March 17, 1986.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 0
- producing wells, of 1 of record
- 0
- 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.
- 24%
- spud rate · 4 of 17 mature permits
- 9
- median days permit to spud · middle half 8–10
- 0
- spuds, last 180 days
- 0%
- cancelled · 0 permits
- 13
- expired undrilled
- 4
- permits a year over 4 active years
Where
Counties by permits in the last 12 months, with all-time permits and current wells of record there.
All 17 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 |
|---|---|---|
| No completion tops on file. | ||
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
- 0
- permitted itself
- 0
- acquired from others
- 7
- 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 | 15 |
| Recompletion | 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 |
|---|---|---|
| Crystal City (3450)22100750 | 1 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Mar 17, 1986
- Address
- P. O. Box 42836
- Houston, TX 77042
- Officers and agents
- Grelling, L.A. · Owner
Latest permits
NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES
| Permit | Seen | Issued | Operator | County | Lease / well | Depth | API |
|---|---|---|---|---|---|---|---|
| 104403 | Dec 23, 1980 | Dec 23, 1980 | Grelling Investments | Dimmit | White, Carroll et AL #2 | 3,800 | 12732134 |
| 42551 | Feb 14, 1979 | Feb 14, 1979 | Grelling Investments | Zavala | Puente, et AL #2 | 3,800 | 50731090 |
| 39356 | Dec 21, 1978 | Dec 21, 1978 | Grelling Investments | Zavala | Elaine Sand Oil Unit II #1 | 3,800 | 50731079 |
| 35993 | Nov 1, 1978 | Nov 1, 1978 | Grelling Investments | Zavala | Guenther, R. A. Mrs #2 | 3,100 | 50731035 |
| 35992 | Nov 1, 1978 | Nov 1, 1978 | Grelling Investments | Zavala | Griffith, et al "B" #1 | 4,250 | 50731034 |
| 29834 | Aug 3, 1978 | Aug 3, 1978 | Grelling Investments | Zavala | Elaine Sand Oil Unit I #1 | 3,800 | 50731012 |
| 28721 | Jul 18, 1978 | Jul 18, 1978 | Grelling Investments | Zavala | Guenther, Mrs. R. A. #1 | 4,000 | 50731006 |
| 27077 | Jun 22, 1978 | Jun 22, 1978 | Grelling Investments | Zavala | Griffith, et al -A- #1 | 4,500 | 50731001 |
| 27076 | Jun 22, 1978 | Jun 22, 1978 | Grelling Investments | Zavala | Dunn, M. B. #2 | 7,609 | 50731000 |
| 24290 | May 15, 1978 | May 15, 1978 | Grelling Investments | Zavala | Vestring, et AL #1 | 4,000 | 50730992 |
| 21998 | Apr 12, 1978 | Apr 12, 1978 | Grelling Investments | Dimmit | Ammann, W. C. #1 | 6,300 | 12780864 |
| 20998 | Mar 29, 1978 | Mar 29, 1978 | Grelling Investments | Zavala | White, Carroll et AL #1 | 3,200 | 50730975 |
| 17910 | Feb 9, 1978 | Feb 9, 1978 | Grelling Investments | Zavala | King, Travis H. #1 | 3,845 | 50730958 |
| 14742 | Dec 27, 1977 | Dec 27, 1977 | Grelling Investments | Zavala | Lamantia et AL #3 | 4,388 | 50730948 |
| 5688 | Dec 20, 1977 | Dec 20, 1977 | Grelling Investments | Zavala | Puente, et AL #1 | 3,800 | 50730895 |
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/332483, documented in the API reference.