US 12,345,137 B2
Swellable devices based on renewable raw materials and methods of using in wellbores
Anton Kovalchuk, Houston, TX (US); and Anil Sadana, Houston, TX (US)
Assigned to Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed by Anton Kovalchuk, Houston, TX (US); and Anil Sadana, Houston, TX (US)
Filed on Apr. 15, 2021, as Appl. No. 17/231,255.
Claims priority of provisional application 63/010,217, filed on Apr. 15, 2020.
Prior Publication US 2021/0324713 A1, Oct. 21, 2021
Int. Cl. E21B 43/10 (2006.01); B01D 29/15 (2006.01); B01D 39/16 (2006.01); C08L 29/04 (2006.01); C08L 31/02 (2006.01); C08L 33/08 (2006.01); C08L 97/02 (2006.01); E21B 37/10 (2006.01)
CPC E21B 43/108 (2013.01) [B01D 29/15 (2013.01); B01D 39/1676 (2013.01); C08L 29/04 (2013.01); C08L 31/02 (2013.01); C08L 33/08 (2013.01); C08L 97/02 (2013.01); B01D 2239/10 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An apparatus comprising an expandable and porous filtration member having a body constructed of a composite comprising a polymer hydrogel, a rubber binder, and a filler, wherein the body has a first volume and expandable to a second volume upon contacting with a fluid comprising water, the filler comprises one or more of the following: wood particles; wood strands;
wood chips; wood flakes; wood shavings; walnut shell fragments; or corn cob fragments; and
wherein the body of the expandable and porous filtration member filters fluid that passes therethrough.