US 12,288,626 B2
Method and composition for limiting permeability of a matrix to limit liquid and gas inflow
Deon Van Dyk, Perth (AU); and Nico Johan Grobler, Kensington (AU)
Assigned to Relborn Party Ltd, Bibra Lake (AU); and Triomviri Party Ltd, Bibra Lake (AU)
Appl. No. 16/978,205
Filed by Relborgn Pty Ltd, Bibra Lake (AU); and Triomviri Pty Ltd, Bibra Lake (AU)
PCT Filed Mar. 5, 2018, PCT No. PCT/AU2018/050198
§ 371(c)(1), (2) Date Sep. 4, 2020,
PCT Pub. No. WO2019/169423, PCT Pub. Date Sep. 12, 2019.
Prior Publication US 2021/0043335 A1, Feb. 11, 2021
Int. Cl. G21F 9/24 (2006.01); C08J 9/36 (2006.01); C09D 5/02 (2006.01); C09D 7/61 (2018.01); E02D 31/02 (2006.01); E02D 31/10 (2006.01); E21D 9/00 (2006.01); E21D 11/38 (2006.01)
CPC G21F 9/24 (2013.01) [C08J 9/365 (2013.01); C09D 5/022 (2013.01); C09D 7/61 (2018.01); E02D 31/02 (2013.01); E02D 31/10 (2013.01); E21D 9/002 (2013.01); E21D 11/38 (2013.01)] 11 Claims
 
1. A method of limiting or reducing liquid and/or gas inflow through a porous matrix, comprising delivering to said porous matrix a coagulable polymer emulsion or colloid comprising a dispersion of polymer particles for contacting with at least one selected additive which interacts with said polymer emulsion or colloid to form a sealing barrier to reduce liquid and/or gas inflow through the porous matrix wherein said coagulable polymer emulsion or colloid contains at least one selected additive including one or a combination of radiation stabilisers to confer radiation resistance on said sealing barrier; wherein said sealing barrier is formed by contacting said polymer emulsion or colloid with a further selected additive to cause coagulation of said polymer emulsion or colloid to a coagulated mass to form said sealing barrier; wherein said sealing composition comprises a latex emulsion or colloid comprising a dispersion of latex particles in aqueous solution and a radiation stabiliser selected from the group consisting of carbon black, zinc oxide both in particulate form and essentially insoluble in water; ortho di-substituted phenols, hydroxyphenyl propionates, hydroxybenzyl compounds, aromatic amines, sterically hindered amines, phosphites and organic sulphur compounds; and wherein said sealing composition forms a containment barrier mechanically resistant to at least 1 MRad.