CASS-COUNTISS 20F

Oil · District 08 · Lease #60052

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

245k BBL

Cum Gas

422k MCF

casinghead

Wells

1

Production

2023-05 — 2026-04

Peak Month

2024-07

Production History

Cum Oil: 244,669 BBL Cum Gas: 422,087 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

15,390 BBL/mo

Di (annual)

80.3%

b-factor

0.2

EUR

287,354 BBL

R-squared

0.826

type

hyperbolic

Operator History (from monthly production reports)

2023-05 — 2026-07 PIONEER NATURAL RES. USA, INC. 39 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6HPIONEER NATURAL RES. USA, INC.210,3912022-10-14