... Abstract Plugging of cuttings in the wellbore is a common problem during drilling processes. Some authors have analyzed settling or slip velocity of particles in a liquid both analytically and experimentally. The concentration of cuttings throughout the well has been also analyzed. It has been...

... 1.0150 m/s (200 ft/min). Hopkin 4 worked with spheres and plates of glass, sandstone discs, and shale cuttings. He studied how the fluid viscosity and density affect the particle slip velocity. Also, he studied the critical concentration of the drilled solids in the annulus. He concluded...