MARY 18A-18

Oil · District 7C · Lease #18995

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

178k BBL

Cum Gas

436k MCF

casinghead

Wells

1

Production

2015-02 — 2026-04

Peak Month

2015-03

Production History

Cum Oil: 178,285 BBL Cum Gas: 436,441 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

14,342 BBL/mo

Di (annual)

178.7%

b-factor

0.5

EUR

188,580 BBL

R-squared

0.868

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 66 mo
2015-02 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 72 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HAPIONEER NATURAL RES. USA, INC.19,6002014-09-25