CASS-ERNEST E20M

Oil · District 08 · Lease #51846

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

379k BBL

Cum Gas

826k MCF

casinghead

Wells

1

Production

2019-02 — 2026-04

Peak Month

2019-03

Production History

Cum Oil: 378,928 BBL Cum Gas: 825,915 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

9,092 BBL/mo

Di (annual)

38.1%

b-factor

0.0

EUR

286,655 BBL

R-squared

0.535

type

exponential

Operator History (from monthly production reports)

2019-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 90 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
13HPIONEER NATURAL RES. USA, INC.110,4502018-07-17