STEWART 28-21 UNIT

Oil // district 10 // lease#48229

op: DIAMONDBACK E&P LLC

cum_oil

1.6M BBL

cum_gas

0 MCF

wells

3

production

2016-03 — 2026-03

peak_month

2018-08

-- production_history

cum_oil: 1,637,009 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

60,832 BBL/mo

Di (annual)

160.0%

b-factor

0.9

EUR

1,731,064 BBL

R-squared

0.965

type

hyperbolic

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SBDIAMONDBACK E&P LLC310,4002017-08-09
2WADIAMONDBACK E&P LLC210,4002017-08-09
1HBRIGHAM RESOURCES OPERATING, LLC121,0002015-07-14
EOF // data source: Texas Railroad Commission // 2026