CASS "B"

Oil · District 08 · Lease #38764

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

137k BBL

Cum Gas

345k MCF

casinghead

Wells

2

Production

2008-02 — 2023-12

Peak Month

2018-04

Production History

Cum Oil: 136,507 BBL Cum Gas: 344,914 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,760 BBL/mo

Di (annual)

18.7%

b-factor

0.1

EUR

125,425 BBL

R-squared

0.469

type

hyperbolic

Operator History (from monthly production reports)

2008-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 222 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2PIONEER NATURAL RES. USA INC.111,3852011-11-28
1PIONEER NATURAL RES. USA INC.210,4002007-08-28