SANDEFUR '38'

Oil · District 08 · Lease #42789

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

69k BBL

Cum Gas

157k MCF

casinghead

Wells

1

Production

2012-06 — 2026-04

Peak Month

2012-12

Production History

Cum Oil: 68,843 BBL Cum Gas: 156,947 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,417 BBL/mo

Di (annual)

146.9%

b-factor

0.9

EUR

73,753 BBL

R-squared

0.772

type

hyperbolic

Operator History (from monthly production reports)

2012-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 170 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA, INC.111,7002012-03-15