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SURFACE PRODUCTION OPERATIONS - INTRODUCTION TO SURFACE PROCESSING2 min - THERMODYNAMIC PHASE EQUILIBRIUM5 min - UNIT OPERATIONS8 min - FLOW OPTIMISATION5 min 20 min G.S.RAVI SHANKAR UPES
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INTRODUCTION TO SURFACE PROCESSING 2 MINUTES
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Topside crude processing
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Upstream processing
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THERMODYNAMIC PHASE EQUILIBRIUM 5 MINUTES
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Reservoir Classification & Phase Behavior Oil Reservoir Gas Reservoir ClassificationAA’BB’CC’DD’EE’ Reservoir typeUnder saturated Black oil Saturated Black oil Retrogade Gas condensate Wet gasDry gas GOR200 - 7002000 – 32008,000 – 70,00060,000 – 100,000 > 100,000 Bo< 1.2< 2--- API15 - 4045 - 55506065 Liquid Vol. Vs Pressure Negligible Oil + Gas + Water Gas + Water Crude colorDarkBrownGreeni sh OrangeWater White Liquid Invisible Gas
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P-V-T Phase Behavior Pure component Hydrocarbon Mixture
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Adiabatic Flash Equilibrium Vapor - Liquid Vapor – Oil - Water
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Algorithm for calculating Mole fractions for Gas – Oil - Water
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PROPERTIES & FLOW RATES PROPERTIESFLOWRATES DENSITYOIL STREAM VISCOSITYGAS STREAM THERMAL CONDUCTIVITYWATER STREAM
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UNIT OPERATIONS 8 MINUTES Separators Pipelines Pumps Valves Heat Exchangers Process controls
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Separators
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Design considerations
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Design Inputs
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Algorithm for Separation design using DSM Droplet Settling Method
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Results
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Process piping & pumping Valves Heat exchangers
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Unit Operations
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Process piping and pumping
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Liquid Pipeline Design
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Gas Pipeline Design
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Pump Design
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Valve Design
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Heat Exchanger Design
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FLOW ASSURANCE Ensure pumps run at Best efficiency point (BEP)
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Flow Modeleling while ensuring proper Flow characteristics for Piping components like Pumps, valves, flowmeters etc. Type of flow in wells FLOW ASSURANCE
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Valve selection for specific purpose FO, FC Initial Half open Additional flow accommodation for tuning valve +/- 10% to catch slugging
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Other Major Considerations For Topside Design TO MEET CUSTOMER DEMANDS FOR GAS & OIL COMPOSITION (Thermodynamic PVT adjustments) REDUCE F-F MINIMUM PIPING LENGTHS (Installing efficient Instruments that require least Upstream & Downstream piping lengths)
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References Separator – Ken Arnold & Maurice Stewart, Surface production operations Vol I, ISBN: 0-88415-821-7
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