STATE ARMSTRONG 9-4 UNIT

Oil // district 10 // lease#52567

op: DIAMONDBACK E&P LLC

cum_oil

1.1M BBL

cum_gas

0 MCF

wells

7

production

2019-06 — 2026-03

peak_month

2019-12

-- production_history

cum_oil: 1,082,379 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

45,205 BBL/mo

Di (annual)

437.6%

b-factor

1.8

EUR

2,055,178 BBL

R-squared

0.712

type

hyperbolic

-- wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8BSDIAMONDBACK E&P LLC113,0002021-05-24
6BSDIAMONDBACK E&P LLC211,6322019-12-11
7BSDIAMONDBACK E&P LLC211,3092019-12-11
3WADIAMONDBACK E&P LLC111,4002019-07-30
4WADIAMONDBACK E&P LLC111,4002019-07-30
1WADIAMONDBACK E&P LLC111,4002019-02-20
2WADIAMONDBACK E&P LLC111,4002019-02-20
EOF // data source: Texas Railroad Commission // 2026