Composite bow centralizer
AssigneeHalliburton Energy Services, Inc.
InventorsGlenn Lively, David Levie, Dietmar Mueller, Thorsten Weber
Life of this patent
Estimating the term…
Abstract
A centralizer can be produced from a process comprising forming a plurality of composite bow spring from a fiber and a resin, curing the composite bow springs in a desired shape to form a plurality of cured bow springs, disposing a first portion of a resin-wetted fiber about a cylindrical mandrel to form a plurality of collars, disposing the plurality of cured bow springs onto the mandrel with the bow spring ends in contact with the first portion of resin-wetted fiber, disposing a second portion of the resin-wetted fiber about the cylindrical mandrel, curing the collars to form a cured centralizer, and pressing the mandrel out of the cured centralizer.
Claims10
A method of producing a centralizer comprising:
- forming a plurality of composite bow springs from a third portion of a resin-wetted fiber, where in the resin-wetted fiber comprises a fiber and a resin;
- disposing a plurality of particulates on an outer surface of at least one bow spring of the plurality of composite bow springs prior to curing the resin, wherein the plurality of particulates reduce the running forces during movement of the centralizer when the plurality of particulates are in contact with a surface, and wherein the plurality of particulates are coated with a surface coating agent;
- curing the composite bow springs in a desired shape to form a plurality of cured bow springs;
- disposing a first portion of the resin-wetted fiber about a cylindrical mandrel to form a plurality of collars;
- disposing the plurality of cured bow springs onto the mandrel with the bow spring ends in contact with the first portion of the resin-wetted fiber;
- disposing a second portion of the resin-wetted fiber about the cylindrical mandrel in contact with the bow spring ends, wherein a portion of the second portion of the resin-wetted fiber disposed about the cylindrical mandrel is placed on top of the bow springs ends such that the bow spring ends are integrally formed into the plurality of collars;
- curing the collars to form a cured centralizer.
Dependencies are inferred from the claim text.