BERRY-LEHMAN "A"

Oil // district 1 // lease#12208

op: VIOLA PROD., INC.

cum_oil

3k BBL

cum_gas

0 MCF

wells

3

production

1993-01 — 2026-03

peak_month

1993-02

-- production_history

cum_oil: 3,066 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

321 BBL/mo

Di (annual)

91.8%

b-factor

0.0

EUR

4,184 BBL

R-squared

0.675

type

exponential

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3CHESAPEAKE OPERATING, INC.29,0001991-02-15
1YAHOLA OPERATING CO.16,8821988-09-30
2YAHOLA OPERATING CO.46,9001988-09-30
EOF // multi-state drilling data platform // 2026