OPERATORS · RRC 76398 · P-5 STATUS Y
Blsr Oper, Ltd
Rosharon, TX
Watch this operatorBlsr Oper, Ltd has filed no drilling permits in the past 12 months; its most recent permit was issued March 25, 2002.
The RRC wellbore file lists 5 wells under its operatorship.
1 drilling permits have been issued to this operator number since 2002; its P-5 organization report was last filed December 7, 2012.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 0
- producing wells, of 5 of record
- 1
- leases it reports
- —
- horizontal, 12 months
WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 2026
Where
Counties by permits in the last 12 months, with all-time permits and current wells of record there.
All 1 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 |
|---|---|---|
| Miocene (undifferentiated) | 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
- 2.93K
- 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
- 5
- on the schedule
- 0
- producing
- 0
- shut in
- 0
- injection
- 0
- temp. abandoned
- 5
- plugged
How it got them
- 1
- permitted itself
- 3
- acquired from others
- 0
- 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 10
- 0
- permitted bbl/day, active
- 0
- bbl injected, last 12 reported months
- Jun 2025
- reported through
By county
| Brazoria | 0 active | 0 bbl/d |
| San Augustine | 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 | 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 |
|---|---|---|
| Juliff (7660)47625830 | 5 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Dec 7, 2012
- Address
- 11160 FM 521
- Rosharon, TX 77583
- (713) 882-8580
- Officers and agents
- Blsr Management Corp. · General Partner
- Caldwell, John H. Jr. · President
- Caldwell, Tammie R. · 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 |
|---|---|---|---|---|---|---|---|
| 518563 | Mar 25, 2002 | Mar 25, 2002 | Blsr Operating, Ltd. | Brazoria | Caldwell, J. H. #10 | 7,000 | 03932774 |
| 465519 | Sep 15, 1997 | Sep 15, 1997 | BLS Resources, Inc. | Brazoria | Caldwell, J. H. #1 | 8,258 | 03901372 |
| 451177 | Aug 7, 1996 | Aug 7, 1996 | BLS Resources, Inc. | Brazoria | Caldwell, J.H. #4 | 8,500 | 03932587 |
| 177013 | Nov 10, 1982 | Nov 10, 1982 | Derrick Oil & Gas, Inc. | Brazoria | Caldwell, J. H. #3 | 8,500 | 03931866 |
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/76398, documented in the API reference.