HEFFELFINGER-SARTWELLE

Oil · District 03 · Lease #26972

Operator: TEXEGY OPERATING COMPANY LLC

Cum Oil

17k BBL

Cum Gas

10k MCF

casinghead

Wells

1

Production

2014-03 — 2021-11

Peak Month

2014-04

Production History

Cum Oil: 17,415 BBL Cum Gas: 9,866 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,201 BBL/mo

Di (annual)

135.4%

b-factor

0.3

EUR

15,117 BBL

R-squared

0.747

type

hyperbolic

Operator History (from monthly production reports)

2020-05 — 2026-07 LANGSTON OIL, LLC 75 mo
2019-09 — 2020-04 MIDFIELD SWD, LLC 8 mo
2016-11 — 2019-08 TEXEGY OPERATING COMPANY LLC 34 mo
2014-03 — 2016-10 SV ENERGY COMPANY, LLC 32 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1LANGSTON OIL LLC19,2002014-01-21