DSPAIN -C-

Oil // district 14 // lease#1428

op: STEPHENS & JOHNSON OPERATING CO.

cum_oil

148k BBL

cum_gas

0 MCF

wells

8

production

1993-01 — 2026-03

peak_month

2012-03

-- production_history

cum_oil: 148,235 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

891 BBL/mo

Di (annual)

9.6%

b-factor

0.0

EUR

111,073 BBL

R-squared

0.540

type

exponential

-- wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10KELLERVILLE OPERATING, LLC12,7002012-03-15
9KELLERVILLE OPERATING, LLC12,7002011-04-21
7KELLERVILLE OPERATING, LLC12,7002009-09-18
8KELLERVILLE OPERATING, LLC12,7002009-09-18
2CHEVRON U. S. A. INC.12,6501987-08-21
3CHEVRON U. S. A. INC.12,6001987-06-17
6CHEVRON U. S. A. INC.12,6001987-06-17
542-483-80759--------
EOF // multi-state drilling data platform // 2026