Pumping mud by electrohydrodynamic propulsion

摘要

A section of riser casing urges drilling mud through the riser (102), either upward from the sea floor to reduce head pressure or downward toward the wellbore. The section of riser casing (130) may use an electromagnet (132), two or more electrodes (134), or a combination of electromagnets and electrodes to urge drilling mud having electrohydrodynamic properties through the riser casing.