MASTEN, F. O. ESTATE

Oil · District 8A · Lease #64683

Operator: SOUTHWEST ROYALTIES, INC.

Cum Oil

249k BBL

Cum Gas

54 MCF

casinghead

Wells

1

Production

1993-01 — 2019-02

Peak Month

1994-12

Production History

Cum Oil: 248,955 BBL Cum Gas: 54 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,924 BBL/mo

Di (annual)

14.6%

b-factor

0.2

EUR

192,709 BBL

R-squared

0.778

type

hyperbolic

Operator History (from monthly production reports)

1997-07 — 2021-04 SOUTHWEST ROYALTIES, INC. 286 mo
1993-01 — 1997-06 KLABZUBA OPERATING COMPANY 54 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SOUTHWEST ROYALTIES INC.112,0001983-09-23