RICHARDS 47A

Oil · District 10 · Lease #39423

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

25k BBL

Cum Gas

0 MCF

Wells

2

Production

2006-12 — 2026-03

Peak Month

2007-10

Production History

Cum Oil: 25,439 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

587 BBL/mo

Di (annual)

52.9%

b-factor

0.4

EUR

21,634 BBL

R-squared

0.793

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2PIONEER NATURAL RES. USA, INC.111,0002006-11-29
1PIONEER NATURAL RES. USA, INC.210,6002006-09-07
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