GRIMES A 19-18

Oil · District 7C · Lease #20401

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

549k BBL

Cum Gas

1.2M MCF

casinghead

Wells

2

Production

2019-05 — 2026-04

Peak Month

2019-08

Production History

Cum Oil: 548,600 BBL Cum Gas: 1,239,522 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

12,306 BBL/mo

Di (annual)

34.0%

b-factor

0.0

EUR

434,326 BBL

R-squared

0.588

type

exponential

Operator History (from monthly production reports)

2021-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 62 mo
2019-05 — 2021-05 DE3 OPERATING LLC 25 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4401HPIONEER NATURAL RES. USA, INC.19,8002018-11-20
4201HPIONEER NATURAL RES. USA, INC.29,5002018-10-16