HARTY "A"

Oil · District 09 · Lease #7538

Operator: LANKFORD, DAN L.

Cum Oil

14k BBL

Cum Gas

15k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

1993-03

Production History

Cum Oil: 13,959 BBL Cum Gas: 14,943 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

97 BBL/mo

Di (annual)

19.0%

b-factor

0.0

EUR

6,036 BBL

R-squared

0.599

type

exponential

Operator History (from monthly production reports)

2018-04 — 2026-07 KRAMER OPERATING, LLC 100 mo
1993-01 — 2018-03 LANKFORD, DAN L. 303 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5DKRAMER OPERATING, LLC24,6001987-02-11
4KRAMER OPERATING, LLC12,8001985-12-23
2KRAMER OPERATING, LLC12,2001981-09-14
142-503-81644KRAMER OPERATING, LLC------