< leases

HYMAN -H-

Oil · District 08 · Lease #41123

Operator: STERLING OIL AND GAS LLC

Fields: HOWARD GLASSCOCK (CONSOLIDATED)

Cum Oil

1k BBL

Cum Gas

0 MCF

Wells

3

Production

2011-12 — 2023-06

Peak Month

2012-04

Production History

Cum Oil: 1,361 BBL Cum Gas: 0 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

24 BBL/mo

Di (annual)

28.3%

b-factor

0.0

EUR

972 BBL

R-squared

0.375

type

exponential

Operator History (from monthly production reports)

2024-10 — 2026-07 STERLING OIL AND GAS LLC 22 mo
2021-07 — 2024-09 GALLO PETROLEUM, LLC 39 mo
2019-07 — 2021-06 MARSHCO PRODUCTION LLC 24 mo
2019-01 — 2019-06 SCHLACHTER OPERATING CORPORATION 6 mo
2011-12 — 2018-12 BIG D ENERGY COMPANY 85 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1WI42-227-35189BIG D ENERGY COMPANY12,9501997-04-25
342-227-35187BIG D ENERGY COMPANY12,9501997-04-23
242-227-01622BIG D ENERGY COMPANY------