دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The jet stream flows along bottom due to resistance of bottom in jet drilling. It is favour of cleaning cuttings.

flow between formations via a connected wellbore. Crossflow, as seen by downhole cameras, can occur with the wellbore full of fluid and the appearance of a dead well at surface.

a deliberate shut off of a zone by a downhole valve or other method, to prevent cross flow.

n: a smooth flow of fluid in which no turbulence or cross flow of fluid particles occurs between adjacent stream lines. See also Reynolds number.

n: fluid elements flowing along fixed streamlines which are parallel to the walls of the channel of flow. In laminar flow, the fluid moves in plates or sections with a differential velocity across the frontwhich varies from zero at the wall to a maximum towa

fluid flowing at a lower rate with elements of the fluid flowing in fixed streamlines. Laminar friction is a function of NRe (Reynolds number). For laminar flow, the Fanning fracition factor = 16/NRe.