ULS 5-34

Oil · District 08 · Lease #41331

Operator: PIONEER NATURAL RES. USA, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

83k BBL

Cum Gas

137k MCF

casinghead

Wells

2

Production

2011-04 — 2026-04

Peak Month

2011-07

Production History

Cum Oil: 82,645 BBL Cum Gas: 137,150 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,545 BBL/mo

Di (annual)

184.4%

b-factor

0.5

EUR

83,466 BBL

R-squared

0.883

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

2011-04 — 2016-08 DEVON ENERGY PRODUCTION CO, L.P. 65 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-003-41956	OVINTIV USA INC.	3	11,500	2010-08-04
2	42-003-41904	OVINTIV USA INC.	2	11,500	2010-07-28