YATER -B-

Oil · District 10 · Lease #31643

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

61k BBL

Cum Gas

0 MCF

Wells

2

Production

1993-01 — 2017-01

Peak Month

1993-08

Production History

Cum Oil: 60,805 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

744 BBL/mo

Di (annual)

32.0%

b-factor

0.8

EUR

67,180 BBL

R-squared

0.900

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2PARKER & PARSLEY PETROLEUM CO.19,5251987-11-06
1PARKER & PARSLEY PETROLEUM CO.19,5251987-10-23
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