HEMPHILL 83

Oil · District 7B · Lease #31420

Operator: WINDOW OPERATING CO., THE

Cum Oil

145k BBL

Cum Gas

563k MCF

casinghead

Wells

8

Production

2014-02 — 2026-04

Peak Month

2019-09

Production History

Cum Oil: 144,610 BBL Cum Gas: 563,391 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,991 BBL/mo

Di (annual)

43.2%

b-factor

0.3

EUR

117,558 BBL

R-squared

0.921

type

hyperbolic

Operator History (from monthly production reports)

2014-02 — 2026-07 WINDOW OPERATING CO., THE 150 mo

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7WINDOW OPERATING CO., THE24,0002019-08-29
10WINDOW OPERATING CO., THE15,0002019-04-18
8WINDOW OPERATING CO., THE14,0002017-09-21
6WINDOW OPERATING CO., THE14,0002016-09-22
4WINDOW OPERATING CO., THE14,0002015-11-04
5WINDOW OPERATING CO., THE14,0002015-11-04
3WINDOW OPERATING CO., THE14,3002014-12-04
2WINDOW OPERATING CO., THE14,0002013-12-03