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Questar’s Gas Storage Facilities in the West
Brent KitchenSupervisor, Pipeline Marketing
UTAH COLORADO
Peaking Storage (3) Salt Cavern Storage
(Proposed)
Clay Basin
WYOMING Kanda HubProposed
Questar Pipeline Storage Facilities
Present Storage Facilities
1125psig1144psig1540psig2600 psigPressure
1.18BCF2.74BCF6.41BCF117.5BCFTotal
1.27BCF2.13BCF5.62BCF66.21BCFCushion
.256BCF.692BCF.836BCF51.25BCFWorking
35MMCFD65MMCFD75MMCFD765MMCFMax. W/D
5501600383032,500Horsepower
KelvinLongwallThaynesDakotaFormation
AquiferAquiferAquiferDepleted Gas
Type
Chalk Creek
CoalvilleLeroyClay BasinName
Clay Basin Storage Facility
UTAH
COLORADO
WYOMING
Salt Lake City140 Miles
Rock Springs50 Miles
Clay Basin is connected to both Questar and Northwest Pipeline.
Clay Basin Storage Facilities Five 2,600 HP
reciprocating compressors
Three 6,500 HP turbine compressors
One Park and Loan compressor
89,000 feet of 6 and 10-inch field lines
29 field dehydration units 44 injection and
withdrawal wells
Clay Basin’s Geology
The Clay Basin Field is a anticlinal domeabout four miles long and two miles wide that underlies some 4,680 acres.
Present Customer Mix
Primary Firm Storage Service Customers
3
5
5
1
Producers
Marketers
LDC's
Power Co.
Present Customer Mix
Interruptible Storage Service Customers2
22
1
1
9
LDC's
Marketers
Power Co.
Industrials
Producers
Clay Basin Storage
Clay Basin January Averages
CLAY BASIN JANUARY ENDING INVENTORY (PAST 6 YEARS)
0
10
20
30
40
99 00 01 02 03 04
Clay Basin Service Opportunities
Firm Storage Service Capacity Release Interruptible Storage
Service Release of
Injection/Withdrawal rights
In-place Transfers Park and Loan (PAL1)
Questar Hub Services
Questar offers two types of Park and Loan service levels, PAL1 and PAL2.
Service Priority; FSS, PAL1, ISS, PAL2.
Questar’s Representative for PAL services is Marty Anderson 801 324-2017
Questar’s Future Storage Projects
Questar Pipeline is currently exploring two storage projects to meet the needs of its customers Southwest Wyoming Salt Cavern project near
Evanston, Wyoming (salt cavern) Kanda Hub Storage Project near Rock Springs,
Wyoming (depleted gas field)
Questar Project Status
Work is continuing on both storage projects, however the primary focus is on the depleted gas storage project with the potential to tie to multiple large diameter pipelines
Assuming that gas prices decline and stabilize in the near future, an open season is anticipated in 2004 for the Kanda Hub Project
Why Salt?
Caverns can be emptied and refilled quickly High injection and withdrawal rates make them
well-suited to meet peaking requirements multiple times during the same demand period
Salt is an excellent sealant Impervious to natural gas and seals itself
(“creep”) The salt is strategically located
Project History
Drilled and analyzed core hole test well in Pruess Formation 3,000 ft deep, 2,000 ft thick
Conducted initial project feasibility studies Consultant: Sofregaz US Inc.
Acquired necessary leases and rights Leases for caverns and disposal wells Options for water rights from City of Evanston
Project Feasibility
Salt Water Brine disposal Location
Proposed initial pipelines ties are Kern River and Questar Pipeline
As market demand requires we will tie to the other major pipelines in the area
Capacity and Deliverability
Potential for five caverns Sequential cavern development
Storage capacity of 2.5 Bcf working gas and
1.1 Bcf cushion gas per cavern Deliverability of 250 MMcf/day per cavern Injection of 125 MMcf/day per cavern
Current Status
Disposal test well to Nugget Formation Core and log Twin Creek and Nugget Formations Open-hole injectivity test of Nugget Disposal options: Reinjection, settling ponds
and/or combination of these Engineering design
Preliminary cavern design and brine disposal
Pipeline routes and operating facilities (Questar)
Rock Springs Storage Project
Preliminary engineering underway to determine project capacity, cost and timing
Projected size ranging from 15 Bcf to 20 Bcf working gas
Anticipated interconnects with Questar Pipeline, Overthrust, CIG, WIC and Overland Trail
Projected in service 2007 - 08
Summary
Questar Pipeline is focused on providing transportation and storage service that will improve market access for Rocky Mountain gas supply. Implementing solutions to meet customer needs continues to be our goal in a challenging environment. We look forward to working with our energy partners to find those solutions.