RICHEY "54A"

Oil · District 9 · Lease #8486

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

33k BBL

Cum Gas

0 MCF

Wells

11

Production

1993-01 — 2026-03

Peak Month

2007-02

Production History

Cum Oil: 33,209 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

612 BBL/mo

Di (annual)

89.6%

b-factor

0.8

EUR

24,366 BBL

R-squared

0.916

type

hyperbolic

Wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10PIONEER NATURAL RES. USA, INC.27,2002007-07-05
12PIONEER NATURAL RES. USA, INC.17,2002006-05-11
11PIONEER NATURAL RES. USA, INC.17,1002006-04-20
9PIONEER NATURAL RES. USA, INC.17,1002006-03-29
8INDIAN WELLS OIL COMPANY17,4001982-03-10
7INDIAN WELLS OIL COMPANY17,4001982-01-25
6INDIAN WELLS OIL COMPANY17,4001981-11-30
5INDIAN WELLS OIL COMPANY17,4001981-01-22
4INDIAN WELLS OIL COMPANY17,4001981-01-21
3INDIAN WELLS OIL COMPANY17,4001980-11-05
2INDIAN WELLS OIL COMPANY17,3001980-02-05
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