KEYSTONE RANCH -A-

Oil · District 01 · Lease #5204

Operator: ORYX ENERGY COMPANY

Cum Oil

44k BBL

Cum Gas

413k MCF

casinghead

Wells

5

Production

1993-01 — 2015-03

Peak Month

2002-04

Production History

Cum Oil: 44,054 BBL Cum Gas: 413,031 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

932 BBL/mo

Di (annual)

31.4%

b-factor

0.0

EUR

35,616 BBL

R-squared

0.654

type

exponential

Operator History (from monthly production reports)

2013-09 — 2026-07 OILFIELD CLEANTECH WATER REC LLC 155 mo
1996-08 — 2013-08 LIGHT RESOURCES 205 mo
1994-06 — 1996-07 FREEDOM ENERGY, INC. (I) 26 mo
1994-01 — 1994-05 HPC OPERATING, INC. 5 mo
1993-01 — 1993-12 ORYX ENERGY COMPANY 12 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5LIGHT RESOURCES16,9001978-10-03
4OILFIELD CLEANTECH WATER REC LLC26,9001978-06-20
3AOILFIELD CLEANTECH WATER REC LLC16,9501977-10-31
2OILFIELD CLEANTECH WATER REC LLC16,7601977-08-23
1LIGHT RESOURCES16,8001977-07-08