ULS 5-27

Oil · District 08 · Lease #41722

Operator: PIONEER NATURAL RES. USA, INC.

Fields: BLOCK 5 (DEVONIAN)

Cum Oil

187k BBL

Cum Gas

29k MCF

casinghead

Wells

1

Production

2011-07 — 2024-03

Peak Month

2011-08

Production History

Cum Oil: 186,996 BBL Cum Gas: 29,025 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,227 BBL/mo

Di (annual)

34.8%

b-factor

0.3

EUR

205,516 BBL

R-squared

0.776

type

hyperbolic

Operator History (from monthly production reports)

2023-06 — 2026-07 OVINTIV USA INC. 38 mo

2016-12 — 2023-05 PIEDRA OPERATING, LLC 78 mo

2016-09 — 2016-11 PIONEER NATURAL RES. USA, INC. 3 mo

2011-07 — 2016-08 DEVON ENERGY PRODUCTION CO, L.P. 62 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-003-42669	OVINTIV USA INC.	3	12,800	2011-02-15