BIGBY WEST F 10-3

Oil · District 08 · Lease #59452

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

847k BBL

Cum Gas

1.9M MCF

casinghead

Wells

2

Production

2023-06 — 2026-04

Peak Month

2023-07

Production History

Cum Oil: 846,649 BBL Cum Gas: 1,945,801 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

82,722 BBL/mo

Di (annual)

358.3%

b-factor

1.0

EUR

1,441,051 BBL

R-squared

0.953

type

hyperbolic

Operator History (from monthly production reports)

2023-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 38 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2806HPIONEER NATURAL RES. USA, INC.18,5002022-06-13
4406HPIONEER NATURAL RES. USA, INC.19,2002022-06-13