CALVERLEY, J. B., -B-

Oil · District 08 · Lease #14594

Operator: VENCER ENERGY, LLC

Cum Oil

440k BBL

Cum Gas

2.4M MCF

casinghead

Wells

10

Production

1993-01 — 2025-10

Peak Month

2014-12

Production History

Cum Oil: 440,059 BBL Cum Gas: 2,428,335 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,947 BBL/mo

Di (annual)

19.9%

b-factor

0.0

EUR

117,408 BBL

R-squared

0.301

type

exponential

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 (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1CIVITAS PERMIAN OPERATING, LLC18,5002025-12-22
10CIVITAS PERMIAN OPERATING LLC111,5002014-06-13
9CIVITAS PERMIAN OPERATING LLC18,6001999-11-15
8CIVITAS PERMIAN OPERATING LLC18,6001999-09-16
7CIVITAS PERMIAN OPERATING LLC18,6001999-08-31
6CIVITAS PERMIAN OPERATING LLC18,5501979-11-08
5CIVITAS PERMIAN OPERATING LLC18,5501979-10-26
242-173-00398CIVITAS PERMIAN OPERATING LLC------
342-173-10036CIVITAS PERMIAN OPERATING LLC------
442-173-10038CIVITAS PERMIAN OPERATING LLC------