MARY 18-7A-C

Oil · District 7C · Lease #20916

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

343k BBL

Cum Gas

1.0M MCF

casinghead

Wells

1

Production

2019-11 — 2026-04

Peak Month

2019-11

Production History

Cum Oil: 343,343 BBL Cum Gas: 1,045,961 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

24,176 BBL/mo

Di (annual)

337.2%

b-factor

1.2

EUR

613,569 BBL

R-squared

0.960

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
4105HPIONEER NATURAL RES. USA, INC.29,7002019-07-02