ROBBIE 17A-8

Oil · District 7C · Lease #20044

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

1.2M BBL

Cum Gas

6.4M MCF

casinghead

Wells

4

Production

2018-06 — 2026-04

Peak Month

2018-07

Production History

Cum Oil: 1,228,737 BBL Cum Gas: 6,390,408 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

58,242 BBL/mo

Di (annual)

134.0%

b-factor

0.8

EUR

1,649,161 BBL

R-squared

0.896

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2026-07 PIONEER NATURAL RES. USA, INC. 66 mo
2018-06 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 32 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2815HPIONEER NATURAL RES. USA, INC.19,1972018-03-19
4215HPIONEER NATURAL RES. USA, INC.29,9502016-07-11
4315HPIONEER NATURAL RES. USA, INC.211,0502016-07-11
4415HPIONEER NATURAL RES. USA, INC.210,8002016-07-11