HEALD

Oil · District 08 · Lease #40419

Operator: PIONEER NATURAL RES. USA, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

41k BBL

Cum Gas

30k MCF

casinghead

Wells

1

Production

2010-08 — 2026-02

Peak Month

2010-10

Production History

Cum Oil: 40,865 BBL Cum Gas: 30,148 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

333 BBL/mo

Di (annual)

8.0%

b-factor

0.0

EUR

49,140 BBL

R-squared

0.350

type

exponential

Operator History (from monthly production reports)

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

2017-06 — 2023-05 PETROLEGACY ENERGY II, LLC 72 mo

2010-08 — 2017-05 PIONEER NATURAL RES. USA, INC. 82 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
4	42-317-35419	OVINTIV USA INC.	2	11,000	2008-09-15