EP 1409966 A1 20040421 - IMPROVED METHOD AND SYSTEM FOR MEASURING MULTIPHASE FLOW USING MULTIPLE PRESSURE DIFFERENTIALS
Title (en)
IMPROVED METHOD AND SYSTEM FOR MEASURING MULTIPHASE FLOW USING MULTIPLE PRESSURE DIFFERENTIALS
Title (de)
VERBESSERTES VERFAHREN UND SYSTEM ZUR MESSUNG EINER MEHRPHASENSTRÖMUNG UNTER VERWENDUNG MEHRFACHER DRUCKDIFFERENZEN
Title (fr)
TECHNIQUE ET SYSTEME AMELIORES DE MESURE D'UN DEBIT MULTI-PHASE AU MOYEN DE DIFFERENTIELS DE PRESSION MULTIPLES
Publication
Application
Priority
- US 0025865 W 20000921
- US 40094699 A 19990922
- US 40137599 A 19990922
Abstract (en)
[origin: WO0122041A1] An improved method and system for measuring a multi-phase flow in a pressure flow meter. An extended venturi (114) is used and pressure of the multi-phase flow is measured at three or more positions in the venturi, which define two or more pressure differentials in the flow conduit. The differential pressures are then used to calculate the mass flow of the gas phases, the total mass flow, and the liquid phase. The method for determining the mass flow of the high void fraction fluid flow and the gas flow includes certain steps. The first step is calculating a gas density for the gas flow (210). The next two steps are finding a normalized gas mass flow rate through the venturi and computing a gas mass flow rate (220). The following step is estimating the gas velocity in the venturi tube throat (230). The next step is calculating the pressure drop experienced by the gas phase due to work performed by the gas phase in accelerating the liquid phase between the upstream pressure measuring point (142) and the pressure measuring point in the venturi throat (240, 250).
IPC 1-7
IPC 8 full level
G01F 1/44 (2006.01); G01F 1/74 (2006.01); G01F 15/08 (2006.01)
CPC (source: EP)
G01F 1/44 (2013.01); G01F 1/74 (2013.01); G01F 15/08 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0122041 A1 20010329; WO 0122041 A9 20021003; AU 7598600 A 20010424; CA 2399536 A1 20010329; EP 1409966 A1 20040421; EP 1409966 A4 20060201; NO 20023858 D0 20020814; NO 20023858 L 20020927
DOCDB simple family (application)
US 0025865 W 20000921; AU 7598600 A 20000921; CA 2399536 A 20000921; EP 00965242 A 20000921; NO 20023858 A 20020814