OBRIEN RANCH (4500)
Field #66655800 · District 2 · --
Leases
5
Operators
3
Cum Oil
0 BBL
Cum Gas
1.6M MCF
Cum Cond
4k BBL
Production
1997-12 — 2013-09
Production History Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]
RRC production reported through Apr 2026 · recent months incomplete
Type Curve (normalized avg across leases)
Click Load to compute type curve from lease data
Top Operators
| OPERATOR | LEASES | OIL (BBL) | LAST |
|---|---|---|---|
| EXPORT PETROLEUM CORPORATION | 2 | 0 | 2013-09 |
| C & E OPERATING, INC. | 2 | 0 | 2009-12 |
| CHARRO OPERATING, L.L.C. | 1 | 0 | 2007-02 |
Lease Types
Leases (5)
| TYPE | LEASE | OPERATOR | OIL (BBL) | GAS (MCF) | FIRST | LAST |
|---|---|---|---|---|---|---|
| Gas | HARKINS - O'BRIEN "C" | EXPORT PETROLEUM CORPORATION | 0 | 807k | 1998-01 | 2013-09 |
| Gas | O'BRIEN-HARKINS | C & E OPERATING, INC. | 0 | 247k | 1998-06 | 2009-12 |
| Gas | HARKINS-O'BRIEN "B" | EXPORT PETROLEUM CORPORATION | 0 | 20k | 1997-12 | 1999-08 |
| Gas | HARKINS-O'BRIEN "C" | CHARRO OPERATING, L.L.C. | 0 | 197k | 1999-07 | 2007-02 |
| Gas | O'BRIEN-HARKINS | C & E OPERATING, INC. | 0 | 310k | 1998-05 | 2009-12 |