GRANBURY, C. B. A/C #4

Oil · District 03 · Lease #2778

Operator: WAPITI OPERATING, LLC

Cum Oil

705k BBL

Cum Gas

1.2M MCF

casinghead

Wells

23

Production

1993-01 — 2026-01

Peak Month

2016-09

Production History

Cum Oil: 705,387 BBL Cum Gas: 1,233,686 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,793 BBL/mo

Di (annual)

10.9%

b-factor

0.0

EUR

415,125 BBL

R-squared

0.530

type

exponential

Operator History (from monthly production reports)

2025-12 — 2026-07 HD OPERATING CO, LLC 8 mo
2023-10 — 2025-11 84 ENERGY LLC 26 mo
2016-06 — 2023-09 BXP OPERATING, LLC 88 mo
2013-02 — 2016-05 ARGENT ENERGY (US) HOLDINGS INC. 40 mo
2009-05 — 2013-01 WAPITI OPERATING, LLC 45 mo
2002-12 — 2009-04 FAMCOR OIL, INC. 77 mo
2000-04 — 2002-11 EXXON MOBIL CORPORATION 32 mo
1993-01 — 2000-03 EXXON CORP. 87 mo

Wells (23)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
103HD OPERATING CO LLC17,5002012-05-08
105WAPITI OPERATING LLC211,5002011-07-29
62HD OPERATING CO, LLC36,8582005-10-17
73HD OPERATING CO LLC17,1002003-12-22
73DHD OPERATING CO LLC17,1002003-12-22
85HD OPERATING CO, LLC37,7001994-07-21
45HD OPERATING CO, LLC16,8201994-07-08
81HD OPERATING CO LLC28,4001991-06-27
35HD OPERATING CO LLC27,1101982-04-21
84HD OPERATING CO LLC17,7001982-04-13
33HD OPERATING CO LLC27,0901981-10-08
78HD OPERATING CO LLC18,4001981-05-11
80HD OPERATING CO LLC17,8001981-04-23
77HD OPERATING CO LLC17,8001979-11-29
3242-373-80119HD OPERATING CO LLC------
3642-373-00276HD OPERATING CO LLC------
4042-373-00284HD OPERATING CO LLC------
4142-373-03160HD OPERATING CO LLC------
4242-373-00331HD OPERATING CO LLC------
4D42-373-00317HD OPERATING CO LLC------
5D42-373-00264HD OPERATING CO LLC------
6442-373-00744HD OPERATING CO LLC------
6D42-373-00330HD OPERATING CO LLC------