MRS. T. B. ROBERTS R/A -A-

Oil · District 08 · Lease #29630

Operator: SLANT OPERATING, LLC

Cum Oil

148k BBL

Cum Gas

1.2M MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

2002-03

Production History

Cum Oil: 148,026 BBL Cum Gas: 1,205,265 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

835 BBL/mo

Di (annual)

13.6%

b-factor

0.7

EUR

129,804 BBL

R-squared

0.903

type

hyperbolic

Operator History (from monthly production reports)

2023-11 — 2026-07 FORMENTERA OPERATIONS LLC 33 mo
2021-07 — 2023-10 SLANT OPERATING, LLC 28 mo
1998-09 — 2021-06 APACHE CORPORATION 274 mo
1993-01 — 1998-08 MW PETROLEUM CORPORATION 68 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
31FORMENTERA OPERATIONS LLC111,0001983-12-23
30FORMENTERA OPERATIONS LLC110,7001983-08-05