CUMMINS, H. E. -A-

Oil · District 08 · Lease #35910

Operator: SLANT OPERATING, LLC

Cum Oil

140k BBL

Cum Gas

651k MCF

casinghead

Wells

4

Production

1998-05 — 2026-04

Peak Month

2003-06

Production History

Cum Oil: 139,917 BBL Cum Gas: 651,308 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,513 BBL/mo

Di (annual)

20.0%

b-factor

0.5

EUR

151,618 BBL

R-squared

0.771

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
2007-04 — 2021-06 APACHE CORPORATION 171 mo
1998-05 — 2007-03 ANADARKO PETROLEUM CORPORATION 107 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5FORMENTERA OPERATIONS LLC16,3252003-07-08
4FORMENTERA OPERATIONS LLC17,0002003-05-23
7FORMENTERA OPERATIONS LLC17,0002003-01-08
2FORMENTERA OPERATIONS LLC36,2761997-01-17