Equivalent Circulating Density

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Equivalent Circulating Density
ECD - Densidade Equivalente de Circulação [expressa em lb/gal, representa a soma da pressão hidrostática e das perdas de carga por fricção no espaço anular numa certa profundidade (psi) dividida pelo fator 0,17 e pela profundidade em consideração (m).]


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Equivalent Circulating Density
For a circulating fluid, the equivalent circulating density in lbs/gallon is equal to the hydrostatic head of the annular fluid (psig) plus the total annular frictional pressure loss (in psig) caused by the fluids circulating in the annulus, divided by the depth (feet) and a conversion factor of 0. 52.


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