DUNCAN HEIRS UNIT

Oil // district 6 // lease#14367

op: SOUTHWESTERN ENERGY PROD. CO.

cum_oil

25k BBL

cum_gas

0 MCF

wells

1

production

2003-11 — 2026-03

peak_month

2003-12

-- production_history

cum_oil: 24,647 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

771 BBL/mo

Di (annual)

379.2%

b-factor

1.4

EUR

24,013 BBL

R-squared

0.441

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HSOUTHWESTERN ENERGY PROD. CO.28,4002003-09-03
EOF // multi-state drilling data platform // 2026