CASS-ERNEST E20S

Oil · District 08 · Lease #60288

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

230k BBL

Cum Gas

353k MCF

casinghead

Wells

1

Production

2023-11 — 2026-04

Peak Month

2023-12

Production History

Cum Oil: 230,056 BBL Cum Gas: 352,742 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

13,520 BBL/mo

Di (annual)

79.7%

b-factor

0.0

EUR

203,504 BBL

R-squared

0.585

type

exponential

Operator History (from monthly production reports)

2023-11 — 2026-07 PIONEER NATURAL RES. USA, INC. 33 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
19HPIONEER NATURAL RES. USA, INC.210,5032023-02-13