CALVIN LEASE

Oil // district 13 // lease#32573

op: ROG ENTERPRISES, LLC

cum_oil

735 BBL

cum_gas

0 MCF

wells

8

production

2012-12 — 2026-03

peak_month

2014-06

-- production_history

cum_oil: 735 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

16 BBL/mo

Di (annual)

72.0%

b-factor

0.0

EUR

243 BBL

R-squared

0.329

type

exponential

-- wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7SROG ENTERPRISES, INC.11,0002013-01-23
8SROG ENTERPRISES, INC.11,0002013-01-23
1CJROG ENTERPRISES, INC.11,5002013-01-17
2SROG ENTERPRISES, INC.21,0002012-09-18
3SROG ENTERPRISES, INC.21,0002012-09-18
4SROG ENTERPRISES, INC.21,0002012-09-18
5SROG ENTERPRISES, INC.11,0002012-09-18
6SROG ENTERPRISES, INC.11,0002012-09-18
EOF // data source: Texas Railroad Commission // 2026