井控计算公式-英进制(英文)

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1、WELLCONTROLEquationsCharts&TablesWELLCONTROLEQUATIONS1.Pressure(psi)2.PressureGradient(psi/ft)3.HydrostaticPressure(psi)a.b.c.4.EquivalentDensity(ppg)5.FormationPressure(psi)assumingshut-inwellwithBHPequalizedwithformationpressure6.DensitytoBalanceFormation(ppg)appsworddocswcequatn.

2、docPAGE12OF12Revised9/6/21WELLCONTROLEQUATIONSEquivalentMudWeight,EMW(ppg)1.MaximumAllowableSurfacePressure,MASP(psi)BasedonCasingBurst.2.MaximumInitialShut-InCasingPressure,MISICP(psi)Uponinitialclosureonly--Basedonformationbreakdown@shoe.ForIWCF,writtenasinitialMAASP.3.InitialCircul

3、atingPressure(psi)ENGINEER'S&DRILLER'SMETHODS.4.FinalCirculatingPressure(psi)ENGINEER'SMETHOD.5.EquivalentCirculatingDensity,ECD(ppg)6.GasPressureandVolumeRelationship--Boyle'sLawThePressure(psi)ofagasbubbletimesitsVolume(bbl)inonepartoftheholeequalsitsPressuretimesitsVolumeinanother.

4、DisregardseffectsofTemperature(T)andgascompressibility(z)or7.PumpOutput(bbl/min)appsworddocswcequatn.docPAGE12OF12Revised9/6/21WELLCONTROLEQUATIONS1.100%TriplexPumpOutput(bbl/stroke)2.SurfaceToBitStrokes(strokes)3.CirculatingTime(min)4.OpenHoleCapacityFactor(bbl/ft)5.PipeCapacityFac

5、tor(bbl/ft)6.appsworddocswcequatn.docPAGE12OF12Revised9/6/21WELLCONTROLEQUATIONSAnnulusCapacityFactor,ACF(bbl/ft)1.PipeDisplacement(bbl/ft)Disregardingtooljoints.2.TotalPipeDisplacementIncludingCapacity(bbl/ft)Disregardingtooljoints.3.HeightofInflux(ft)4.PressureGradientofInflux(psi

6、/ft)Bitonbottom.5.6.RateofKickRise(ft/hr)WellShut-In.appsworddocswcequatn.docPAGE12OF12Revised9/6/21WELLCONTROLEQUATIONS1.WeightperFootofDrillCollars(lb/ft)2.Force(lb)3.Area(in2)4.DegreesAPI(@60oF)5.SpecificGravity(@60oF)6.MudWeightfromSpecificGravity(ppg)(FreshWaterweighs8.33ppg)7.

7、appsworddocswcequatn.docPAGE12OF12Revised9/6/21WELLCONTROLEQUATIONSHangOffWeight(lb)1.BariteRequirementForWeight-up(100lbsxs)2.CuttingBackorWeightingUpOneFluidwithAnothertoObtainDesiredFluidDensity3.FinalDensityofaMixtureofFluids,(ppg)4.FinalDensityofaMixtureofaFluidandaSolid,(ppg)5

8、.Weig