COOK, I. J.

Oil · District 8A · Lease #65700

Operator: WALSH PETROLEUM, INC.

Cum Oil

336k BBL

Cum Gas

108k MCF

casinghead

Wells

7

Production

1993-01 — 2026-04

Peak Month

1993-07

Production History

Cum Oil: 336,336 BBL Cum Gas: 107,753 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,083 BBL/mo

Di (annual)

8.9%

b-factor

0.4

EUR

368,510 BBL

R-squared

0.864

type

hyperbolic

Operator History (from monthly production reports)

2023-01 — 2026-07 SIXESS ENERGY, LLC 43 mo
1995-03 — 2022-12 WALSH PETROLEUM, INC. 334 mo
1993-05 — 1995-02 PARKER & PARSLEY, WPI AGENT 22 mo
1993-01 — 1993-04 WALSH PETROLEUM, INC. 4 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7SIXESS ENERGY, LLC15,0001991-04-10
2SIXESS ENERGY, LLC15,0001990-08-21
6SIXESS ENERGY, LLC15,0001990-08-21
4SIXESS ENERGY, LLC15,0001986-09-15
3SIXESS ENERGY, LLC15,0001986-07-14
1SIXESS ENERGY, LLC15,0001985-12-16
5SIXESS ENERGY, LLC15,0001984-02-29