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

Oil // district 10 // lease#31908

op: STRONGHOLD ENERGY II OPER, LLC

cum_oil

255k BBL

cum_gas

0 MCF

wells

7

production

1993-01 — 2026-03

peak_month

2020-01

-- production_history

cum_oil: 254,506 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,929 BBL/mo

Di (annual)

37.5%

b-factor

0.0

EUR

61,622 BBL

R-squared

0.612

type

exponential

-- wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6STRONGHOLD ENERGY II OPER, LLC24,5752022-06-17
7STRONGHOLD ENERGY II OPER, LLC44,6502021-12-10
12CHEVRON U. S. A. INC.25,0002010-06-29
8CHEVRON U. S. A. INC.15,0002007-10-03
9CHEVRON U. S. A. INC.15,0002007-10-03
5CHEVRON U. S. A. INC.14,5501989-03-03
4CHEVRON U. S. A. INC.14,6901988-05-25
EOF // data source: Texas Railroad Commission // 2026