TUBB, J. B. ETAL TR. -C-

Oil · District 08 · Lease #31908

Operator: STRONGHOLD ENERGY II OPER, LLC

Cum Oil

255k BBL

Cum Gas

1.7M MCF

casinghead

Wells

7

Production

1993-01 — 2026-04

Peak Month

2008-11

Production History

Cum Oil: 254,697 BBL Cum Gas: 1,663,371 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,108 BBL/mo

Di (annual)

42.0%

b-factor

0.0

EUR

60,165 BBL

R-squared

0.601

type

exponential

Operator History (from monthly production reports)

2022-09 — 2026-07 RING ENERGY, INC. 47 mo
2018-11 — 2022-08 STRONGHOLD ENERGY II OPER, LLC 46 mo
1993-01 — 2018-10 CHEVRON U. S. A. INC. 310 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6RING ENERGY, INC.24,5752022-06-17
7RING ENERGY, INC.44,6502021-12-10
12RING ENERGY, INC.25,0002010-06-29
8RING ENERGY, INC.15,0002007-10-03
9RING ENERGY, INC.15,0002007-10-03
5RING ENERGY, INC.14,5501989-03-03
4RING ENERGY, INC.14,6901988-05-25