MARY 18-7A-D

Oil · District 7C · Lease #20918

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

394k BBL

Cum Gas

2.6M MCF

casinghead

Wells

1

Production

2019-11 — 2026-04

Peak Month

2020-05

Production History

Cum Oil: 393,892 BBL Cum Gas: 2,625,786 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

34,239 BBL/mo

Di (annual)

281.1%

b-factor

0.9

EUR

609,386 BBL

R-squared

0.952

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 66 mo
2019-11 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 15 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4307HPIONEER NATURAL RES. USA, INC.210,0502019-06-10