CALVERLEY (P) "B"

Oil · District 08 · Lease #26891

Operator: RSP PERMIAN, LLC

Fields: SPRABERRY (TREND AREA)

Cum Oil

21k BBL

Cum Gas

41k MCF

casinghead

Wells

2

Production

1993-01 — 2013-10

Peak Month

1996-04

Production History

Cum Oil: 20,878 BBL Cum Gas: 41,046 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

272 BBL/mo

Di (annual)

59.5%

b-factor

0.9

EUR

16,953 BBL

R-squared

0.642

type

hyperbolic

Operator History (from monthly production reports)

2018-08 — 2026-07 COG OPERATING LLC 96 mo

2015-07 — 2018-07 RSP PERMIAN, LLC 37 mo

2006-11 — 2015-06 ENDEAVOR ENERGY RESOURCES L.P. 104 mo

1993-01 — 2006-10 PALO PETROLEUM, INC. 166 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-173-31105	COG OPERATING LLC	1	8,500	1980-11-24
2	42-173-31104	COG OPERATING LLC	1	8,500	1980-11-24