Porous polymeric material and filtration device
AssigneeBaker Hughes Oilfield Operations LLC
InventorsPing Duan, Vimal Shah
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Abstract
A material, comprising a crosslinked polymeric material with a dry density of 0.1 g/cm3 to 0.7 g/cm3, and an open volume of 60% to 99.5%, and a fluid control device that includes the polymeric material. The polymeric material exhibits a rubbery plateau above the glass transition temperature of a precursor polymer from which the material is prepared. The fluid control device includes a filtration medium including the polymeric material, which is configured to expand and remain in contact with a support structure and provide permeability to the filtration medium.
Claims14
A fluid control device comprising:
- a support structure including a fluid passage and configured to be deployed in a borehole;
- and
- a filtration medium including a crosslinked polymeric material, the filtration medium disposed in contact with the support structure;
- wherein the crosslinked polymeric material is configured to expand to form an expanded, amorphous, crosslinked polymeric material that remains in contact with the support structure to increase permeability of the filtration medium,
- wherein the expanded, amorphous, crosslinked polymeric material has a density of 0.1 g/cm3 to 0.7 g/cm3, an open volume of 60% to 99.5%, and exhibits a rubbery plateau above the glass transition temperature of a precursor polymer,
- wherein the precursor polymer is selected from the group consisting of a fluoropolymer, an aromatic polyamide, polyether ether ketone (PEEK), polyetherketoneketone (PEKK), and a combination thereof.
(canceled)
A method of making a permeable material, the method comprising:
- blending a salt and a precursor polymer to provide an admixture;
- compacting the admixture under pressure in a mold to provide a compacted admixture;
- heating the compacted admixture to a temperature above the glass transition temperature of the precursor polymer;
- and
- extracting the salt from the heat-treated admixture to provide the polymeric material.
Dependencies are inferred from the claim text.