GRANTHAM "D"

Oil · District 8A · Lease #68400

Operator: SULLIVAN, HOLLIS R. INC.

Cum Oil

36k BBL

Cum Gas

71 MCF

casinghead

Wells

1

Production

2002-01 — 2022-07

Peak Month

2002-01

Production History

Cum Oil: 35,662 BBL Cum Gas: 71 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

872 BBL/mo

Di (annual)

73.0%

b-factor

0.7

EUR

36,077 BBL

R-squared

0.830

type

hyperbolic

Operator History (from monthly production reports)

2009-01 — 2026-07 CANAN MOWREY OPERATING, LLC 211 mo
2002-01 — 2008-12 SULLIVAN, HOLLIS R. INC. 84 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1CANAN MOWREY OPERATING LLC15,5002001-11-08