Summary It is shown how the flow from pumping cement through an open-ended pipe very quickly changes direction and flows upward. This rapid change in indicates that a diverter tool, which leads slurry perpendicularly out of closed-ended pipe, does not have any function. The placement balanced plug feasible. However, high-density fluid above lighter stable. phenomenon known as Rayleigh-Taylor in...

The increasing rental cost of drilling Rig and the associated painful downtime during operations are some major concerns oil & gas companies. Improper rheological properties mud may cause a variety problems including insufficient cuttings transport, limited solids suspension, poor hole-cleaning excess filtrate loss into formation. Facilitating design, cementing job design entire will save t...

This paper presents a series of experiments focused on the displacement viscoplastic fluids by various Newtonian and non-Newtonian from long horizontal, eccentric annulus. The flow regimes range high Reynolds number laminar through to fully turbulent. These represent primary cementing operation in horizontal well. main objective our is gain insight into role regime fluid-fluid flows relevance c...

T he technique of cementing orthodontic bands to teeth was first introduced by Magil I in 1871 and remained the treatment of choice for more than 85 years. Direct bonding has replaced anterior teeth banding and offers significant advantages such as improved esthetics, ease of placement, patient comfort, decreased soft tissue irritation, enhanced ability to detect interproximal decay, and less d...