CALVERLEY, J. B. -A-

Oil · District 08 · Lease #6392

Operator: VENCER ENERGY, LLC

Cum Oil

334k BBL

Cum Gas

1.2M MCF

casinghead

Wells

8

Production

1993-01 — 2025-02

Peak Month

2014-07

Production History

Cum Oil: 333,873 BBL Cum Gas: 1,204,694 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,768 BBL/mo

Di (annual)

93.3%

b-factor

0.6

EUR

79,584 BBL

R-squared

0.722

type

hyperbolic

Operator History (from monthly production reports)

2024-01 — 2026-07 CIVITAS PERMIAN OPERATING, LLC 31 mo
2021-08 — 2023-12 VENCER ENERGY, LLC 29 mo
2013-12 — 2021-07 HUNT OIL COMPANY 92 mo
2002-07 — 2013-11 MERIT ENERGY COMPANY 137 mo
2001-07 — 2002-06 DEVON ENERGY PRODUCTION CO, L.P. 12 mo
1999-03 — 2001-06 CONCHO RESOURCES INC. 28 mo
1993-01 — 1999-02 HANLEY PETROLEUM INC. 74 mo

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8CIVITAS PERMIAN OPERATING LLC211,5002014-06-14
7CIVITAS PERMIAN OPERATING LLC211,5002014-05-06
6CIVITAS PERMIAN OPERATING LLC110,5002008-07-25
5CIVITAS PERMIAN OPERATING LLC18,5501999-09-17
4CIVITAS PERMIAN OPERATING LLC18,6001993-09-16
142-173-00615CIVITAS PERMIAN OPERATING LLC------
242-173-00397CIVITAS PERMIAN OPERATING LLC------
342-173-00399CIVITAS PERMIAN OPERATING LLC------