Float collar and float shoe are conventional necessary accessories of casing string substructure, usually connected in the bottom of casing string, used to guide the casing string smoothly into the well, to prevent cement back flow and create pressure then cement solidification after Realizing press

1. Introduction of Float collar and float shoeFloat collar and float shoe are conventional necessary accessories of casing string substructure, usually connected in the bottom of casing string, used to guide the casing string smoothly into the well, to prevent cement back flow and create pressure th