SHILLITO

Oil · District 7B · Lease #26408

Operator: WB MULLIN OPERATING LLC

Cum Oil

37k BBL

Cum Gas

17k MCF

casinghead

Wells

1

Production

1993-01 — 2024-05

Peak Month

2003-04

Production History

Cum Oil: 37,475 BBL Cum Gas: 17,254 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,019 BBL/mo

Di (annual)

49.4%

b-factor

0.2

EUR

30,793 BBL

R-squared

0.855

type

hyperbolic

Operator History (from monthly production reports)

2021-12 — 2026-07 WB MULLIN OPERATING LLC 56 mo
2010-06 — 2021-11 COOPER OIL & GAS, LLC 138 mo
1993-01 — 2010-05 COOPER OIL & GAS, INC. 209 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1WB MULLIN OPERATING LLC24,8001991-11-14