SANDEFUR "A"

Oil · District 08 · Lease #32967

Operator: SOUTHWEST ROYALTIES, INC.

Cum Oil

8k BBL

Cum Gas

503k MCF

casinghead

Wells

1

Production

1993-01 — 2006-04

Peak Month

1993-05

Production History

Cum Oil: 7,670 BBL Cum Gas: 502,738 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

100 BBL/mo

Di (annual)

13.1%

b-factor

0.0

EUR

9,067 BBL

R-squared

0.895

type

exponential

Operator History (from monthly production reports)

1993-01 — 2007-11 SOUTHWEST ROYALTIES, INC. 179 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SOUTHWEST ROYALTIES INC.312,0002010-03-18