ASHTON #4

Oil · District 7C · Lease #15023

Operator: YOCHAM MINERALS, L. L. C.

Cum Oil

26 BBL

Cum Gas

11k MCF

casinghead

Wells

1

Production

2000-09 — 2010-05

Peak Month

2008-12

Production History

Cum Oil: 26 BBL Cum Gas: 10,738 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

7 BBL/mo

Di (annual)

630.0%

b-factor

0.7

EUR

19 BBL

R-squared

0.890

type

hyperbolic

Operator History (from monthly production reports)

2012-08 — 2026-07 LANDMASTER PARTNERS, INC. 168 mo
2011-02 — 2012-07 WEST, BILL R. 18 mo
2008-11 — 2011-01 F & S PETROLEUM, L.L.C. 27 mo
2006-02 — 2008-10 YOCHAM MINERALS, L. L. C. 33 mo
2005-09 — 2006-01 HUGHES, BOB OIL COMPANY 5 mo
2000-09 — 2005-08 PIONEER ENERGY CORPORATION 60 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4LANDMASTER PARTNERS INC.14,8001998-05-08