ECHOLS "7"

Oil · District 08 · Lease #41504

Operator: THREE RIVERS OPERATING CO II LLC

Fields: SPRABERRY (TREND AREA)

Cum Oil

162k BBL

Cum Gas

322k MCF

casinghead

Wells

4

Production

2011-05 — 2025-02

Peak Month

2014-06

Production History

Cum Oil: 161,663 BBL Cum Gas: 322,138 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,843 BBL/mo

Di (annual)

30.0%

b-factor

0.2

EUR

141,690 BBL

R-squared

0.869

type

hyperbolic

Operator History (from monthly production reports)

2020-04 — 2026-02 EOG RESOURCES, INC. 71 mo

2016-01 — 2020-03 THOMPSON, J. CLEO 51 mo

2014-12 — 2015-12 OXY USA INC. 13 mo

2014-02 — 2014-11 THREE RIVERS OPERATING CO II LLC 10 mo

2011-05 — 2014-01 PIONEER NATURAL RES. USA, INC. 33 mo

Wells (4)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
4	42-317-38181	EOG RESOURCES INC.	1	11,600	2012-11-19
3	42-317-37471	EOG RESOURCES INC.	1	11,600	2012-03-12
2	42-115-33407	EOG RESOURCES INC.	1	11,400	2011-06-24
1	42-115-33366	EOG RESOURCES INC.	2	11,400	2011-01-21