COOPER -P-

Oil // district 1 // lease#10987

op: LANGLAND OIL, INC.

fields: SOMERSET

cum_oil

959 BBL

cum_gas

0 MCF

wells

11

production

1993-01 — 2026-03

peak_month

1993-03

-- production_history

cum_oil: 959 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

38 BBL/mo

Di (annual)

46.6%

b-factor

0.0

EUR

957 BBL

R-squared

0.547

type

exponential

-- wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1MID-TEXAS RESOURCES, INC.12,0001985-10-02
2MID-TEXAS RESOURCES, INC.12,0001985-08-06
3MID-TEXAS RESOURCES, INC.12,0001985-08-06
4MID-TEXAS RESOURCES, INC.12,0001985-08-06
5MID-TEXAS RESOURCES, INC.12,0001985-08-06
10EL DORADO OIL & GAS INC.12,0001985-05-15
11EL DORADO OIL & GAS INC.12,0001985-05-15
6EL DORADO OIL & GAS INC.12,0001985-05-15
7EL DORADO OIL & GAS INC.12,0001985-05-13
8EL DORADO OIL & GAS INC.12,0001985-05-13
9EL DORADO OIL & GAS INC.12,0001985-05-13
EOF // multi-state drilling data platform // 2026