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PETE311_06A_Class09_(Maggard)

# PETE311_06A_Class09_(Maggard) - Conversion Factors for...

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Conversion Factors for Oilfield Units

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Need for Unit Conversions Petroleum Engineers must be able to work with various unit systems International scope of industry Unit systems used varies geographically Team members may not all be located in same geographical location Joint ventures between companies Particular units may be required at your location Legislated units for reporting and regulatory compliance Company protocol
Oilfield Units Oilfield units are non-coherent Newton’s 2nd Law (F=ma) SI: Force (Newton) is a derived unit to make equation coherent USCS: Mass (slugs) is a derived unit to make equation coherent AES, Oilfield Units: A unit conversion constant required (F=ma/g c ) Darcy’s Law Darcy units: Permeability is a derived unit to make equation coherent SI: coherent (permeability unit is m 2 ) Oilfield Units: A unit conversion constant is required The constant may include geometry terms (integrated form) For gas flow, the constant may include standard temperature and pressure, even for Darcy and SI units ds d Φ μ k C A q v s = =

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Learning Objectives Deriving unit conversion constants – Given A physical relationship expressed as an equation, using coherent units or with a correct conversion constant supplied and appropriate unit conversion factors between unit systems – Find The required unit conversion constant (including its units) to express the equation in a different unit system
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PETE311_06A_Class09_(Maggard) - Conversion Factors for...

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