BLOCK 31, NW. (PENN UPPER)
Field #9362500 · District 10 · --
Leases
16
Operators
25
Cum Oil
1.6M BBL
Cum Gas
0 MCF
Production
1993-01 — 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 |
|---|---|---|---|
| SOUTHLAND ROYALTY CO.-MIDLAND | 2 | 1.0M | 2026-04 |
| RIM OPERATING, INC. | 2 | 202k | 2026-04 |
| BLACKBEARD OPERATING, LLC | 2 | 207k | 2026-04 |
| PLAINS PETROLEUM OPERATING CO. | 2 | 13k | 1998-02 |
| WALBET, INC. | 1 | 55k | 2026-04 |
| DEVON ENERGY PRODUCTION CO, L.P. | 1 | 3k | 2014-11 |
| RBJ & ASSOCIATES, LLC | 1 | 0 | -- |
| PHOENIX HYDROCARBONS OPERATING | 1 | 9k | 1999-08 |
| DENVER MINERALS, INC. | 1 | 0 | -- |
| SIMPSON OIL LLC | 1 | 13k | 2007-02 |
Lease Types
Leases (16)
| TYPE | LEASE | OPERATOR | OIL (BBL) | GAS (MCF) | FIRST | LAST |
|---|---|---|---|---|---|---|
| Oil | WADDELL TR 3 | SOUTHLAND ROYALTY CO.-MIDLAND | 975k | 840k | 1993-01 | 2026-04 |
| Oil | WADDELL TR 1 | BLACKBEARD OPERATING, LLC | 170k | 245k | 2023-02 | 2026-04 |
| Oil | UNIVERSITY BLOCK -31- | RIM OPERATING, INC. | 136k | 130k | 1993-01 | 2026-04 |
| Oil | UNIVERSITY -EP- | RIM OPERATING, INC. | 65k | 440 | 1993-01 | 2026-04 |
| Oil | HENDERSON, M. F. | WALBET, INC. | 55k | 98 | 1993-01 | 2026-04 |
| Oil | WADDELL, W.N. TR. -4- | SOUTHLAND ROYALTY CO.-MIDLAND | 50k | 37k | 1993-01 | 2005-08 |
| Oil | ROADRUNNER 1 | ROCA OPERATING, INC. | 49k | 24k | 2009-12 | 2026-04 |
| Oil | WADDELL TR 4 | BLACKBEARD OPERATING, LLC | 37k | 33k | 2022-08 | 2026-04 |
| Oil | UNIVERSITY 31-8 | STRONGHOLD ENERGY II OPER, LLC | 30k | 40k | 2011-08 | 2026-04 |
| Oil | UNIVERSITY "1-6" | SIMPSON OIL LLC | 13k | 127 | 1993-01 | 2007-02 |
| Oil | UNIVERSITY 4 | PLAINS PETROLEUM OPERATING CO. | 9k | 124 | 1993-01 | 1996-06 |
| Oil | MCGEE, JUNE | PHOENIX HYDROCARBONS OPERATING | 9k | 623 | 1993-01 | 1999-08 |
| Oil | UNIVERSITY BLOCK 31 -A- | PLAINS PETROLEUM OPERATING CO. | 4k | 6k | 1993-01 | 1998-02 |
| Oil | UNIVERSITY 31-6 | DEVON ENERGY PRODUCTION CO, L.P. | 3k | 858 | 2011-04 | 2014-11 |
| Oil | WADDELL, W.N. -4- | RBJ & ASSOCIATES, LLC | 0 | 0 | 2007-03 | -- |
| Oil | STATE UNIVERSITY | DENVER MINERALS, INC. | 0 | 0 | 1993-01 | -- |