SANDEFUR A

Oil · District 08 · Lease #40239

Operator: SOUTHWEST ROYALTIES, INC.

Cum Oil

3k BBL

Cum Gas

15k MCF

casinghead

Wells

1

Production

2010-02 — 2015-07

Peak Month

2013-01

Production History

Cum Oil: 3,033 BBL Cum Gas: 14,506 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

196 BBL/mo

Di (annual)

156.1%

b-factor

0.0

EUR

1,501 BBL

R-squared

0.773

type

exponential

Operator History (from monthly production reports)

2010-02 — 2026-07 SOUTHWEST ROYALTIES, INC. 198 mo

Wells (1)

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