OLDHAM-GRAHAM 35D

Oil · District 08 · Lease #55699

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

179k BBL

Cum Gas

693k MCF

casinghead

Wells

1

Production

2021-01 — 2026-04

Peak Month

2021-08

Production History

Cum Oil: 179,425 BBL Cum Gas: 692,621 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

15,233 BBL/mo

Di (annual)

186.2%

b-factor

0.5

EUR

192,451 BBL

R-squared

0.974

type

hyperbolic

Operator History (from monthly production reports)

2021-01 — 2026-07 PIONEER NATURAL RES. USA, INC. 67 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HPIONEER NATURAL RES. USA, INC.110,2312020-05-19