LONESOME DUFFER (DUFFER)
Field #54647080 · District 8 · --
Leases
31
Operators
3
Cum Oil
24k BBL
Cum Gas
5.3M MCF
Cum Cond
7k BBL
Production
1996-06 — 2026-07
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 |
|---|---|---|---|
| BRAKA OPERATING, L.L.C. | 23 | 24k | 2026-04 |
| STEPHENS & JOHNSON OPERATING CO. | 6 | 0 | 2026-04 |
| KOKOMO ENERGY, INC. | 2 | 0 | 2026-04 |
Lease Types
Leases (31)
| TYPE | LEASE | OPERATOR | OIL (BBL) | GAS (MCF) | FIRST | LAST |
|---|---|---|---|---|---|---|
| Oil | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 12k | 532k | 2003-06 | 2015-08 |
| Oil | COPELAND | BRAKA OPERATING, L.L.C. | 6k | 70k | 2006-01 | 2011-04 |
| Oil | COPELAND RANCH | BRAKA OPERATING, L.L.C. | 6k | 87k | 2001-07 | 2004-02 |
| Gas | JACKSON "89" | BRAKA OPERATING, L.L.C. | 0 | 171k | 2007-04 | 2026-04 |
| Gas | STUART, ELLEN G. "C" | STEPHENS & JOHNSON OPERATING CO. | 0 | 961k | 1996-08 | 2026-04 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 160k | 2004-03 | 2026-04 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 58k | 2015-09 | 2026-01 |
| Gas | COPELAND | BRAKA OPERATING, L.L.C. | 0 | 81k | 2011-05 | 2026-04 |
| Gas | COPELAND ET AL | BRAKA OPERATING, L.L.C. | 0 | 44k | 2008-03 | 2026-04 |
| Gas | FEE-STUART | STEPHENS & JOHNSON OPERATING CO. | 0 | 451k | 1996-11 | 2004-03 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 84k | 2003-01 | 2026-04 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 137k | 2006-01 | 2026-04 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 39k | 2003-10 | 2024-08 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 17k | 2015-09 | 2026-04 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 22k | 2007-03 | 2026-04 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 109k | 2005-01 | 2026-04 |
| Gas | STUART, JULIA | STEPHENS & JOHNSON OPERATING CO. | 0 | 21k | 2001-06 | 2002-04 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 210k | 2005-07 | 2026-04 |
| Gas | STUART, J. N. "A" | KOKOMO ENERGY, INC. | 0 | 82k | 2002-06 | 2026-04 |
| Gas | COPELAND RANCH "B" | KOKOMO ENERGY, INC. | 0 | 130k | 2002-05 | 2026-04 |
| Gas | COPELAND RANCH "B" | BRAKA OPERATING, L.L.C. | 0 | 7k | 2003-01 | 2003-05 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 179k | 2007-10 | 2026-04 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 48k | 2015-09 | 2026-04 |
| Gas | STUART, ELLEN G. "B" | STEPHENS & JOHNSON OPERATING CO. | 0 | 826k | 1996-06 | 2026-04 |
| Gas | DIAZ, J. M. | STEPHENS & JOHNSON OPERATING CO. | 0 | 28k | 2003-09 | 2010-05 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 200k | 2002-05 | 2026-03 |
| Gas | COPELAND RANCH "C" | BRAKA OPERATING, L.L.C. | 0 | 879k | 2008-06 | 2026-04 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 187k | 2004-08 | 2026-04 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 124k | 2009-04 | 2026-04 |
| Gas | STUART, ELLEN G. "B" | STEPHENS & JOHNSON OPERATING CO. | 0 | 1k | 2002-03 | 2002-05 |
| Gas | COPELAND RANCH "A" | BRAKA OPERATING, L.L.C. | 0 | 56k | 2007-09 | 2026-04 |