SummaryAPI RP14EEquationDescriptionValueDimensionSingle Phase Liquid Lines2.1Flow velocity in liquid lines0.015ft/s2.2Pressure drop in liquid lines0.0008625psi/100ft2.3Reynold's number602.4Available Net Positive Suction Head (NPSHa)-931671.512422362.5Acceleration head931677.01863354Single Phase Gas Lines2.9General pressure drop equation1.47656252.10Weymouth equation17.35507965242.11Panhandle equation0.01996968482.12Spitzglass equationERROR:#NAME?2.13Gas velocity equation0.084375Gas/Liquid Lines Two-phase2.14Erosional velocity0.9486832981ft/sec2.15Density of a Gas/Liquid Mixture74.8585807752.16Minimum Pipe Cross-Sectional Area Required to Avoid Fluid Erosion10.21807622042.17Pressure Drop in Two-Phase Line (Weight Flow)104.90560096682.17aPressure Drop if Moody friction factor average 0.015ERROR:#VALUE!2.18Liquid Plus Vapor Rate in a Two-Phase Line (Weight Flow)6013582962626.672.19Minimum Pipe Wall Thickness56002.20Stress Analysis Criteria for a Two-Anchor System24002.21Therman Expansion of Piping21600Valve3.1Pressure Drop Across a Valve in Liquid Service15638523.2Pressure Drop Across a Valve in Gas Service256161.111111111

LiquidSizing Criteria for Single Phase Liquid LinesFlow velocity in liquid lines (V1)Equation 2.1InputDimensionQ120barrels/dayLiquid flow rated14InchesPipe inside diameterPressure drop in liquid lines (DP)Equation 2.2InputDimensionf0.03Moody friction factorQ120barrels/dayLiquid flow rateS11Liquid Specific Gravityd14InchesPipe inside diameterReynold's number (Re)Equation 2.3InputRho120lb/ft3Liquid densitydf4ftPipe inside diameterV115ft/secLiquid flow velocityMiu120lb/ft-secLiquid viscosityAvailable Net Positive Suction Head (NPSHa)Equation 2.4InputDimensionhp10Absolute pressure head due to pressure, atmospheric or otherwise, on surface of liquid going to suction, feet of liquidhvpa2The absolute vapor pressure of the liquid at suction temperature, feet of liquidhst3Static head, positive or negative due to liquid level above or below datum line (centerline of pump), feet of liquidhf2Friction head, or head loss due to flowing friction in the suction piping, including entrance and exit losses, feet of liquidhvh3.4937888199Velocity head, feet of liquidha931677.01863354acceleration head, feet of liquidCentrifugal/Rotary acceleration head is zeroReciprocating may be calculated from Eq 2.5

V115ft/secg32.2ft/sec2Acceleration head (ha)Equation 2.5InputDimensionL2000Length of suction line, feet (actual length, not equivalent length)V13ft/secAverage liquid velocity in suction lineRp5000rev/minPump speedC1Empirical constantK1Factor representing the reciprocal of the fraction of the theoretical acceleration head which must be provided to avoid a noticeable disturbance in the suction pipingg32.2ft/sec2Gravitational constant

Gas

Sizing Criteria for Single Phase Gas LinesGeneral pressure drop equation (DP)Equation 2.9InputDimensionS2Gas specific gravity at standard conditionQg3mmscfdGas flow rate mmscfd (at 14.7 psig and 60 F)Z4Compressibility factor for gasT150RFlowing temperaturef5Moody friction factorL4ftLengthP1600psiaUpstream pressured4inPipe IDEmpirical Pressure DropWeymouth equation (Qg)Equation 2.10InputDimensiond5inPipe IDP160psiaPressure at point 1P234psiaPressure at point 2L100ftLength of pipeS1Specific gravity of gas at standard conditionT1540RTemperature of gas inletZ1Compressibility factorPanhandle equation (Qg)Equation 2.11InputDimensionP130psiaupstream pressureP210psiadownstream pressureS3gas specific gravityZ2compressibility factorT190Rflowing temperatureLm3mileslengthd1inpipe IDE1efficiency factor 1brand new pipe0.95good operating condition0.92average operating condition0.85unfavorable operating conditionSpitzglass equation (Qg)Equation 2.12InputDimensionhw3in of waterpressure lossS2gas specific gravity at standard conditionL40ftlengthd4inpipe IDGas velocity equation (Vg)Equation 2.13InputDimensiond14inQg3mmcfdat 14.7 psia and 60T3ROperating temperatureP400psiaOperating pressureZ1Gas compressibility factor

Gas-Liquid

Sizing Criteria for Gas/Liquid Two Phase LinesErosional velocity (Ve)Equation 2.14c9pm90lbs/secDensity of a Gas/Liquid Mixture (Rhom)Equation 2.15S13Liquid specific gravityP4psiaOperating pressureR5ft2/barrelgas/liquid ratioSg6Gas specific gravityT7ROperating temperaturZ2Gas compressibility factorMinimum Pipe Cross-Sectional Area Required to Avoid Fluid ErosionEquation 2.16minimum pipe cross sectional flow area required, in2/1000 blpd

Pressure DropEquation 2.17dt4inpipe inside diameterf74.858580775gas/liquid density at flowing pressure and temperatureRhom10lbs/ft3

W6535.2lbs/hrEquation 2.18Qg1mmcfd (14.7 psia dan 60 F)Sg2gas specific gravity (air=1)Q13bpdliquid flow rateS14liquid specific gravity (water=1)Pipe Wall ThicknessEquation 2.19P120psiginternal design pressureDo4pipe outside diameterE2longitudinal weld joint factorY3temperature factorS40psiallowable stress in accordance with ANSI B31.3 Stress AnalysisEquation 2.20D4inDI21600U9ftL15ftEquation 2.21L15ftB3mean coeffisien of thermal expansion at operating temperatures normally encounteredDT40

Valve

Valve SizingPressure drop for liquid serviceEquation 3.1S13GPM1444gallons/minCv2Pressure drop for gas serviceEquation 3.2Sq1.5Gas specific gravityT40RFlowing temperatureP30psiaflowing pressureQg35mmcfdGas flow rateCv3Valve coefficient

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