WASHINGTON WEST B 23-14

Oil · District 7C · Lease #20807

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

574k BBL

Cum Gas

3.5M MCF

casinghead

Wells

2

Production

2019-11 — 2026-04

Peak Month

2020-01

Production History

Cum Oil: 573,920 BBL Cum Gas: 3,479,528 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

46,106 BBL/mo

Di (annual)

339.2%

b-factor

0.9

EUR

699,988 BBL

R-squared

0.856

type

hyperbolic

Operator History (from monthly production reports)

2021-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 62 mo
2019-11 — 2021-05 DE3 OPERATING LLC 19 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4302HPIONEER NATURAL RES. USA, INC.19,5002019-04-16
4602HPIONEER NATURAL RES. USA, INC.19,5002019-04-16