Floating apparatus and method for fabricating the apparatus

摘要

A floating apparatus for use in a casing string is provided. The apparatus includes an outer sleeve having a valve centrally positioned therein. A cement body is affixed to the check valve and the housing by use of a bonding material.

主权项

1. A floating apparatus for use in a well casing comprising:
an outer sleeve configured to be connected to said well casing, said outer sleeve having an outer surface and an inner surface, wherein said inner surface defines a central flow passage; a valve disposed in said outer sleeve, said valve comprising a valve housing having an interior surface defining a bore in fluid flow communication with said central flow passage and an exterior surface opposing said inner surface of said outer sleeve wherein said exterior surface and inner surface define an annulus between said valve housing and said outer sleeve; a first bonding material adhered to and encircling at least a portion of said inner surface of said outer sleeve located in said annulus; a second bonding material adhered to and encircling at least a portion of said exterior surface of said valve housing located in said annulus; and a cementitious material having a first surface and a second surface; said cementitious material being disposed in said annulus so that said cementitious material prevents flow through said annulus, wherein said first surface is bonded to said first bonding material and said second surface is bonded to said second bonding material by introducing said cementitious material into said annulus prior to said first bonding material and said second bonding material hardening such that said first bonding material and said cementitious material cure together at said first surface to form a first bond and such that said second bonding material and said cementitious material cure together at said second surface to form a second bond.