PRESTON 18I

Oil · District 08 · Lease #50181

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

388k BBL

Cum Gas

2.2M MCF

casinghead

Wells

1

Production

2018-02 — 2026-04

Peak Month

2018-10

Production History

Cum Oil: 388,018 BBL Cum Gas: 2,226,517 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

23,553 BBL/mo

Di (annual)

90.9%

b-factor

0.2

EUR

388,630 BBL

R-squared

0.944

type

hyperbolic

Operator History (from monthly production reports)

2018-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 102 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
9HPIONEER NATURAL RES. USA, INC.111,0502016-10-20