ULS 8-3

Oil · District 08 · Lease #41912

Operator: PIONEER NATURAL RES. USA, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

27k BBL

Cum Gas

43k MCF

casinghead

Wells

1

Production

2011-08 — 2024-10

Peak Month

2011-10

Production History

Cum Oil: 27,454 BBL Cum Gas: 42,887 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

670 BBL/mo

Di (annual)

33.6%

b-factor

0.1

EUR

26,526 BBL

R-squared

0.735

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

2011-08 — 2016-08 DEVON ENERGY PRODUCTION CO, L.P. 61 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-003-42810	OVINTIV USA INC.	1	11,500	2011-04-08