SHIRK, MARY K.

Oil · District 7C · Lease #7859

Operator: SOUTHWEST ROYALTIES, INC.

Cum Oil

61k BBL

Cum Gas

921k MCF

casinghead

Wells

1

Production

1993-01 — 2003-09

Peak Month

1993-07

Production History

Cum Oil: 60,901 BBL Cum Gas: 920,953 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,208 BBL/mo

Di (annual)

24.2%

b-factor

0.0

EUR

59,711 BBL

R-squared

0.698

type

exponential

Operator History (from monthly production reports)

1993-01 — 2007-08 SOUTHWEST ROYALTIES, INC. 176 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SOUTHWEST ROYALTIES, INC.110,1001979-04-17