RICHARDSON UNIT -A-

Oil · District 8A · Lease #13106

Operator: CHOLLA PETROLEUM, INC.

Fields: P. H. D.

Cum Oil

94k BBL

Cum Gas

3k MCF

casinghead

Wells

5

Production

1993-01 — 2025-03

Peak Month

2007-07

Production History

Cum Oil: 94,002 BBL Cum Gas: 2,797 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,431 BBL/mo

Di (annual)

57.8%

b-factor

0.6

EUR

63,585 BBL

R-squared

0.879

type

hyperbolic

Operator History (from monthly production reports)

1996-05 — 2026-01 CHOLLA PETROLEUM, INC. 357 mo
1993-01 — 1996-04 BHP PETROLEUM (AMERICAS) INC. 40 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3CHOLLA PETROLEUM, INC.23,6502011-04-08
5CHOLLA PETROLEUM, INC.14,9992006-02-21
4CHOLLA PETROLEUM, INC.14,9992005-04-04
142-169-00434CHOLLA PETROLEUM, INC.------
242-169-00435CHOLLA PETROLEUM, INC.------