OLDHAM-GRAHAM 35F

Oil · District 08 · Lease #55895

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

240k BBL

Cum Gas

535k MCF

casinghead

Wells

1

Production

2021-01 — 2026-04

Peak Month

2021-08

Production History

Cum Oil: 239,510 BBL Cum Gas: 534,510 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

20,275 BBL/mo

Di (annual)

325.3%

b-factor

1.0

EUR

381,730 BBL

R-squared

0.984

type

hyperbolic

Operator History (from monthly production reports)

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

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6HPIONEER NATURAL RES. USA, INC.210,2312020-05-19