Page History

Deployment

Log Name

FBS

Math Symbol

LaTeX Math Inline

body	f_{FBS}

Measured Property

Fluid flow velocity across spinner area

Sensor Type

Mechanical Spinner

Units

RPM = 60 Hz

RPM = 60 Hz

Applications

LaTeX Math Block

alignment	left

f^{+}_{FBS}(z) = S^{+}_{\rm slope} \cdot ( v_{\rm FLOW}(z) - v^{+}_{LSPD}(z) - v^{+}_{th})

LaTeX Math Block

alignment	left

f^{-}_{FBS}(z) = S^{-}_{\rm slope} \cdot ( v_{\rm FLOW}(z) - v^{-}_{LSPD}(z) - v^{-}_{th})

where

LaTeX Math Inline

body	S_{\rm slope}

is some constant depending on tool construction and well completion ,

LaTeX Math Inline

body	v_{th}

a critical value of the flow speed which can initiate spinner rotation,

LaTeX Math Inline

body	v

– flow velocity.

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