SANDY KOUFAX 5

Oil · District 7C · Lease #19693

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

410k BBL

Cum Gas

3.4M MCF

casinghead

Wells

2

Production

2017-08 — 2026-04

Peak Month

2017-09

Production History

Cum Oil: 409,577 BBL Cum Gas: 3,369,548 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

23,323 BBL/mo

Di (annual)

146.7%

b-factor

0.6

EUR

439,517 BBL

R-squared

0.863

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 66 mo
2017-08 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 42 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4403HPIONEER NATURAL RES. USA, INC.19,0002017-03-23
4401HPIONEER NATURAL RES. USA, INC.18,9502017-03-22