ROBERTSON "B"

Oil // district 8 // lease#17303

op: WALSH & WATTS, INC.

cum_oil

59k BBL

cum_gas

0 MCF

wells

4

production

1993-01 — 2026-03

peak_month

2009-01

-- production_history

cum_oil: 59,297 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

691 BBL/mo

Di (annual)

20.9%

b-factor

0.0

EUR

39,707 BBL

R-squared

0.719

type

exponential

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4WALSH & WATTS, INC.14,8002014-03-07
3TERRELL OPERATING CO.14,9991982-03-16
2TERRELL OPERATING CO.14,9991981-09-24
1TERRELL OPERATING CO.14,8001981-04-08
EOF // data source: Texas Railroad Commission // 2026