circulating pressure

circulating head, circulating pressure

A measure of the pressure available in a hot-water supply system for circulating water around the convection circuit.
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The effects of low temperature on rheological parameters of drilling fluid and the annulus circulating pressure loss of each well section are considered to calculate the density of dynamic kill drilling fluid density; however, the multiple phases and components in dynamic kill in deep water were not taken into account [9].
where [p.sub.hhc] is bottom-hole circulating pressure; [p.sub.hy] is hydrostatic fluid column pressure; [p.sub.a] is annular pressure loss; [p.sub.wh] is surface casing pressure; [p.sub.al] is total pressure loss of power law fluid in annulus laminar flow section; [p.sub.at] is total pressure loss of power law fluid in annulus turbulent flow section.