THORNTON, BERTIE TRUST

Oil · District 7B · Lease #26027

Operator: STEARNS OPERATING COMPANY

Cum Oil

36k BBL

Cum Gas

57 MCF

casinghead

Wells

2

Production

1993-01 — 2011-02

Peak Month

1993-01

Production History

Cum Oil: 36,053 BBL Cum Gas: 57 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

607 BBL/mo

Di (annual)

21.6%

b-factor

0.0

EUR

33,587 BBL

R-squared

0.830

type

exponential

Operator History (from monthly production reports)

2010-11 — 2026-07 GRAYSTONE ENERGY CORPORATION 189 mo
2003-02 — 2010-10 GRAY OIL & GAS INC. 93 mo
2002-12 — 2003-01 QUAIL WELL SERVICE, INC. 2 mo
1994-02 — 2002-11 HEART LAND PETROLEUM CORPORATION 106 mo
1993-11 — 1994-01 QUAIL WELL SERVICE, INC. 3 mo
1993-01 — 1993-10 STEARNS OPERATING COMPANY 10 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2GRAYSTONE ENERGY CORPORATION22,0001992-11-25
1GRAYSTONE ENERGY CORPORATION11,9951990-09-13