BLOCK 39

Oil · District 01 · Lease #11547

Operator: SHEFTS & SHEFTS, INC.

Fields: SALT FLAT

Cum Oil

12k BBL

Cum Gas

31 MCF

casinghead

Wells

1

Production

1993-01 — 2021-10

Peak Month

1995-08

Production History

Cum Oil: 11,932 BBL Cum Gas: 31 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

88 BBL/mo

Di (annual)

13.4%

b-factor

0.3

EUR

10,337 BBL

R-squared

0.570

type

hyperbolic

Operator History (from monthly production reports)

1994-02 — 2026-07 SHEFTS & SHEFTS, INC. 390 mo
1993-01 — 1994-01 SEACO PRODUCTION 13 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SHEFTS & SHEFTS INC.13,0001986-02-11