methane gas in coal mining sa june 18 – 21, 2012 barry stevens, ph.d. president tbd america, a...
TRANSCRIPT
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Methane Gas in Coal Mining SAJune 18 – 21, 2012
Natural Gas Storage Strategies
Barry Stevens, Ph.D.PresidentTBD America, a Technology Business Development consulting group
@ 2011 TBD America
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NATURAL GAS
“Low natural gas prices are lifting the U.S. economy even as many people are
asking questions about its environmental impact.”
"Natural gas is revitalizing America's steel industry, reinvigorating its
petrochemical industry and benefiting heavy-equipment makers.”
…. Keith Hutton, CEO, XTO Energy
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WHY STORAGE
Reliability
Meet Load Variations
Efficiency
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SECONDARY PURPOSES
Operational Integrity
Maintaining Contractual BalanceUnforeseen Accidents &
DisastersRegulatory Obligations
Reducing Price Volatility
Market Speculations
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THE INDUSTRY
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THE MARKETRegulated Market
Deregulated Market
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OPERATING CHARACTERISTICSTotal Gas Storage Capacity
Base / Cushion Gas
Working / Top Gas
Deliverability
Injection Capacity / Rate
Cycling
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HOW THEY WORK
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UNDERGROUND
Depleted Gas Reservoirs
Aquifer Reservoirs
Salt Caverns
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Disadvantages
• Low Deliverability & Injection Rates
• One Yearly Injection/Withdrawal Cycle
• High Base Gas Requirement
• Costly Reconstruction & Maintenance
DEPLETED GAS RESERVOIRSAdvantages
• Lowest Cost
• Existing Pipeline Connections
• Existing Wells & Surface Facilities
• Well Characterized Geology
• Utilization of Indigenous Gas
@ 2011 TBD America
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AdvantagesEnables gas storage
development in locations where hydrocarbon reservoirs
are not readily available or suitable for natural gas
storage
Disadvantages• Highest Capital Cost• High Cushion Gas
Requirement (50% to 80%)
• Maintaining Integrity of Gas/Water Interface
• Infrastructure Not Developed
• Poor Retention Capabilities
• Environmental Restrictions
AQUIFERS
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SALT CAVERNSDisadvantages• High Capital Cost
• Environmental Issues - Brine Disposal
• Volume of Each Cavern has Practical & Geological Limitations
• Periodic Service Disruptions - Government Mandated Inspections
• High Operating Cost Due To Corrosive Environment
Advantages
• Very Low Base Gas Requirements
• Highest Deliverability• Highest Injection Rates• High Cycling
Characteristics• Multiple Cycles Reduces
Unit Cost of Gas Injected & Withdrawn
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ABOVE GROUND
Liquefied Natural Gas(LNG)
Tank Farms
Line Packing
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High Volumetric Efficiency
Costs Going Down
Supports Stranded Gas Deposits
LNG
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DEVELOPMENT COSTS
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CHALLENGES
Management & Control
Industry & Market Demands
Regulatory Hurdles
Location Constraints
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FUTURE
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SUMMARYEfficiency & Reliability
Needs
Capacity & Deliverability Driven
Geographic & Economic Dependency
Commodity Price Management
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Barry Stevens, PhDPresident
TBD America, Inc.www.tbdamericainc.com
THANK YOU