WINDHAM TXL R21

Oil · District 7C · Lease #20973

Operator: COG OPERATING LLC

Cum Oil

292k BBL

Cum Gas

1.9M MCF

casinghead

Wells

1

Production

2020-03 — 2026-04

Peak Month

2020-05

Production History

Cum Oil: 291,892 BBL Cum Gas: 1,903,312 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

32,663 BBL/mo

Di (annual)

232.2%

b-factor

0.5

EUR

332,416 BBL

R-squared

0.877

type

hyperbolic

Operator History (from monthly production reports)

2020-03 — 2026-07 COG OPERATING LLC 77 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3005LHCOG OPERATING LLC212,0002019-03-01