MARY 18B

Oil · District 7C · Lease #22059

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

294k BBL

Cum Gas

463k MCF

casinghead

Wells

1

Production

2023-03 — 2026-04

Peak Month

2024-04

Production History

Cum Oil: 294,022 BBL Cum Gas: 463,120 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

10,440 BBL/mo

Di (annual)

31.7%

b-factor

0.0

EUR

395,219 BBL

R-squared

0.358

type

exponential

Operator History (from monthly production reports)

2023-03 — 2026-07 PIONEER NATURAL RES. USA, INC. 41 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HPIONEER NATURAL RES. USA, INC.18,9002022-12-27