HAMLIN UNIT 20-29

Oil // district 10 // lease#45520

op: TALL CITY OPERATIONS LLC

cum_oil

2.5M BBL

cum_gas

0 MCF

wells

11

production

2014-05 — 2026-03

peak_month

2018-12

-- production_history

cum_oil: 2,538,974 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

101,850 BBL/mo

Di (annual)

175.9%

b-factor

0.7

EUR

1,924,230 BBL

R-squared

0.934

type

hyperbolic

-- wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4AHSURGE OPERATING, LLC210,0002018-05-24
5AHSURGE OPERATING, LLC210,0002018-05-24
6AHSURGE OPERATING, LLC210,0002018-05-24
1AHSURGE OPERATING, LLC210,0002018-01-05
2AHSURGE OPERATING, LLC210,0002017-12-22
7AHSURGE OPERATING, LLC210,0002017-08-09
8AHSURGE OPERATING, LLC310,0002017-01-19
1SHSURGE OPERATING, LLC110,0002016-09-27
2SHSURGE OPERATING, LLC110,0002016-09-20
2HTALL CITY OPERATIONS LLC19,0002014-09-16
1HTALL CITY OPERATIONS LLC110,0002013-10-11
EOF // data source: Texas Railroad Commission // 2026