OBRIEN RANCH (FRIO 4650)
Field #66655250 · District 2 · --
Leases
4
Operators
5
Cum Oil
882 BBL
Cum Gas
582k MCF
Production
1993-01 — 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 |
|---|---|---|---|
| C & E OPERATING, INC. | 2 | 0 | 2009-12 |
| OLDFIELD ACQUISITION LP | 1 | 882 | 1997-05 |
| CHARRO OPERATING, L.L.C. | 1 | 0 | 1999-06 |
Lease Types
Leases (4)
| TYPE | LEASE | OPERATOR | OIL (BBL) | GAS (MCF) | FIRST | LAST |
|---|---|---|---|---|---|---|
| Oil | OBRIEN-HARKINS "A" | OLDFIELD ACQUISITION LP | 882 | 0 | 1993-01 | 1997-05 |
| Gas | O'BRIEN-HARKINS | C & E OPERATING, INC. | 0 | 240k | 1998-06 | 2009-12 |
| Gas | HARKINS - O'BRIEN "C" | CHARRO OPERATING, L.L.C. | 0 | 51k | 1998-01 | 1999-06 |
| Gas | O'BRIEN-HARKINS | C & E OPERATING, INC. | 0 | 291k | 1998-05 | 2007-10 |