PIN OAK "A"

Oil // district 3 // lease#21077

op: TRIVISTA OPERATING LLC

cum_oil

7k BBL

cum_gas

0 MCF

wells

1

production

1993-01 — 2026-03

peak_month

1996-11

-- production_history

cum_oil: 7,081 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

49 BBL/mo

Di (annual)

31.8%

b-factor

1.3

EUR

6,435 BBL

R-squared

0.571

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1BLACK GOLD OPERATING CO., INC.15,9001990-06-25
EOF // data source: Texas Railroad Commission // 2026