NATIONAL

Oil · District 14 · Lease #222

Operator: TOMBSTONE PRODUCTION, INC.

Cum Oil

13k BBL

Cum Gas

0 MCF

Wells

8

Production

1993-01 — 2026-03

Peak Month

1998-08

Production History

Cum Oil: 13,076 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

96 BBL/mo

Di (annual)

18.2%

b-factor

0.0

EUR

6,258 BBL

R-squared

0.435

type

exponential

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2CHASE, D. E., INC.12,8422003-06-16
142-179-81177--------
342-179-81179--------
442-179-03569--------
5W42-179-00863--------
642-179-81182--------
742-179-81183--------
8W42-179-00862--------
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