JOHNSON-STATE

Oil · District 08 · Lease #5268

Operator: SOUTHLAND ROYALTY COMPANY

Fields: SAND HILLS (MCKNIGHT)

Cum Oil

106k BBL

Cum Gas

389k MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

1993-07

Production History

Cum Oil: 106,156 BBL Cum Gas: 389,009 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

390 BBL/mo

Di (annual)

4.5%

b-factor

0.0

EUR

92,436 BBL

R-squared

0.350

type

exponential

Operator History (from monthly production reports)

2013-10 — 2026-07 MILLWEE OIL, INC. 154 mo

2006-05 — 2013-09 CIMAREX ENERGY CO. OF COLORADO 89 mo

1997-05 — 2006-04 GRUY PETROLEUM MANAGEMENT CO. 108 mo

1996-08 — 1997-04 BURLINGTON RESOURCES OIL&GAS CO. 9 mo

1996-03 — 1996-07 MERIDIAN OIL INC. 5 mo

1993-01 — 1996-02 SOUTHLAND ROYALTY COMPANY 38 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
2 U	42-103-32441	MILLWEE OIL, INC.	1	4,800	1980-12-18
1	42-103-03845	MILLWEE OIL, INC.	--	--	--