BROOK A-4

Oil · District 7C · Lease #18868

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

34k BBL

Cum Gas

54k MCF

casinghead

Wells

1

Production

2007-12 — 2022-04

Peak Month

2007-12

Production History

Cum Oil: 34,321 BBL Cum Gas: 53,860 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

688 BBL/mo

Di (annual)

35.9%

b-factor

0.4

EUR

36,631 BBL

R-squared

0.389

type

hyperbolic

Operator History (from monthly production reports)

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

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
94PIONEER NATURAL RES. USA INC.210,5002014-12-03