TURPIN, ROBERT M. ESTATE

Oil · District 08 · Lease #25848

Operator: ENERTEX, INC.

Fields: HOWE (PENN

Cum Oil

23k BBL

Cum Gas

44k MCF

casinghead

Wells

1

Production

1993-01 — 2026-04

Peak Month

2006-06

Production History

Cum Oil: 22,843 BBL Cum Gas: 43,697 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

178 BBL/mo

Di (annual)

9.0%

b-factor

0.4

EUR

31,114 BBL

R-squared

0.411

type

hyperbolic

Operator History (from monthly production reports)

1996-02 — 2026-07 ABRAXAS PETROLEUM CORPORATION 366 mo
1994-08 — 1996-01 ABRAXAS PRODUCTION CORPORATION 18 mo
1993-01 — 1994-07 ENERTEX, INC. 19 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1ABRAXAS PETROLEUM CORPORATION120,3981980-01-31