JOHNSTON, ANNIE

Oil · District 7B · Lease #4965

Operator: ASHTOLA EXPLORATION COMPANY,INC.

Cum Oil

9k BBL

Cum Gas

5k MCF

casinghead

Wells

4

Production

1993-01 — 2004-12

Peak Month

1994-05

Production History

Cum Oil: 8,753 BBL Cum Gas: 5,096 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

212 BBL/mo

Di (annual)

264.3%

b-factor

0.5

EUR

1,797 BBL

R-squared

0.393

type

hyperbolic

Operator History (from monthly production reports)

1993-01 — 2009-07 ASHTOLA EXPLORATION COMPANY,INC. 199 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6ASHTOLA EXPLORATION COMPANY INC.14,9991987-10-22
3ASHTOLA EXPLORATION COMPANY INC.14,9991985-12-06
4ASHTOLA EXPLORATION COMPANY INC.14,9991985-12-03
1 T42-447-02781ASHTOLA EXPLORATION COMPANY INC.------