MASTERSON

Oil · District 10 · Lease #8522

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

1k BBL

Cum Gas

7k MCF

casinghead

Wells

2

Production

2010-09 — 2012-09

Peak Month

2011-04

Production History

Cum Oil: 1,240 BBL Cum Gas: 6,599 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

111 BBL/mo

Di (annual)

158.0%

b-factor

0.0

EUR

836 BBL

R-squared

0.316

type

exponential

Operator History (from monthly production reports)

2010-09 — 2015-01 PIONEER NATURAL RES. USA, INC. 53 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
181RPIONEER NATURAL RES. USA INC.23,4902010-04-15
801RPIONEER NATURAL RES. USA INC.23,7002010-04-01