ROBERTSON

Oil · District 7C · Lease #8813

Operator: CHARTER PETROLEUM COMPANY

Cum Oil

122k BBL

Cum Gas

645k MCF

casinghead

Wells

3

Production

1993-01 — 2020-01

Peak Month

1993-06

Production History

Cum Oil: 121,648 BBL Cum Gas: 645,239 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,317 BBL/mo

Di (annual)

17.9%

b-factor

0.2

EUR

108,299 BBL

R-squared

0.743

type

hyperbolic

Operator History (from monthly production reports)

1993-01 — 2026-07 CHARTER PETROLEUM COMPANY 403 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7CHARTER PETROLEUM COMPANY16,1001981-08-25
4CHARTER PETROLEUM COMPANY16,1001981-06-15
1CHARTER PETROLEUM COMPANY16,0001980-11-25