DUSEK 45-4

Oil · District 7C · Lease #18959

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

897k BBL

Cum Gas

3.0M MCF

casinghead

Wells

2

Production

2014-03 — 2026-04

Peak Month

2015-08

Production History

Cum Oil: 897,296 BBL Cum Gas: 3,028,343 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

13,552 BBL/mo

Di (annual)

18.3%

b-factor

0.0

EUR

889,308 BBL

R-squared

0.516

type

exponential

Operator History (from monthly production reports)

2021-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 66 mo
2014-03 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 83 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4204 HPIONEER NATURAL RES. USA, INC.19,6002014-11-17
4402HPIONEER NATURAL RES. USA, INC.210,0002013-10-29