Patent ID: 8980799
Filing Date: 2015-03-17
Classification: C08J,E21B

Abstract:
1. A method of deploying a borehole filtration device, comprising: deploying a filtration device comprising a polymer foam having a first cell structure into a borehole, a portion of the molecular structure of which polymer foam is degradable by exposure to a post-treatment fluid; and exposing the polymer foam to the post-treatment fluid, thereby modifying the cell structure of the polymer foam to a second cell structure, wherein the polymer foam is a polyurethane foam, which is a reaction product of a first component compromising polyisocyanate and a second component compromising a monomer compound being resistant to degradation by the post-treatment fluid and a monomer compound being susceptible to degradation by the post-treatment fluid, wherein the monomer compound being resistant to degradation by the post-treatment fluid comprises polycarbonate polyol; and wherein the monomer compound susceptible to degradation by the post-treatment fluid comprises polyether polyol, polyester polyol, or a combination comprising at least one of the foregoing.