STRAIN "23"

Oil · District 08 · Lease #38641

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

121k BBL

Cum Gas

122k MCF

casinghead

Wells

2

Production

2007-12 — 2025-09

Peak Month

2018-09

Production History

Cum Oil: 120,977 BBL Cum Gas: 122,109 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,671 BBL/mo

Di (annual)

413.9%

b-factor

1.1

EUR

49,529 BBL

R-squared

0.842

type

hyperbolic

Operator History (from monthly production reports)

2007-12 — 2026-07 PIONEER NATURAL RES. USA, INC. 224 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2PIONEER NATURAL RES. USA INC.110,8002010-08-27
1PIONEER NATURAL RES. USA INC.110,0002007-07-14