BRUMLEY 59

Oil · District 08 · Lease #40456

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

82k BBL

Cum Gas

69k MCF

casinghead

Wells

1

Production

2010-09 — 2026-04

Peak Month

2011-01

Production History

Cum Oil: 82,436 BBL Cum Gas: 68,505 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,446 BBL/mo

Di (annual)

34.4%

b-factor

0.4

EUR

80,303 BBL

R-squared

0.742

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2024-03 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 10 mo
2010-09 — 2024-02 PIONEER NATURAL RES. USA, INC. 162 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC211,0002008-08-02