HAMLIN UNIT 19-18

Oil // district 10 // lease#44887

op: TALL CITY OPERATIONS LLC

cum_oil

2.8M BBL

cum_gas

0 MCF

wells

12

production

2013-12 — 2026-03

peak_month

2020-01

-- production_history

cum_oil: 2,763,261 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

81,262 BBL/mo

Di (annual)

132.4%

b-factor

0.7

EUR

1,985,118 BBL

R-squared

0.952

type

hyperbolic

-- wells (12)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6SHSURGE OPERATING, LLC19,0002019-05-09
6AHSURGE OPERATING, LLC19,0002019-05-08
7SHSURGE OPERATING, LLC29,0002019-05-03
3AHSURGE OPERATING, LLC19,0002019-01-08
2SHSURGE OPERATING, LLC29,0002019-01-07
1SHSURGE OPERATING, LLC29,0002018-12-14
7AHSURGE OPERATING, LLC210,0002018-01-29
8SHSURGE OPERATING, LLC210,0002017-08-17
2AHSURGE OPERATING, LLC110,0002017-02-01
8AHSURGE OPERATING, LLC210,0002016-09-22
1AHSURGE OPERATING, LLC29,5002016-03-17
1HTALL CITY OPERATIONS LLC210,0002013-07-30
EOF // data source: Texas Railroad Commission // 2026