	US 12,410,363 B2
	Diverting agent and method of filling fracture in well using same
Yasuhiro Hirano, Tokyo (JP); Ryosuke Taniguchi, Tokyo (JP); and Chizuko Furo, Tokyo (JP)
Assigned to MITSUBISHI CHEMICAL CORPORATION, Tokyo (JP)
Filed by Mitsubishi Chemical Corporation, Tokyo (JP)
Filed on Aug. 9, 2021, as Appl. No. 17/397,262.
Application 17/397,262 is a continuation of application No. PCT/JP2020/005303, filed on Feb. 12, 2020.
Claims priority of application No. 2019-023948 (JP), filed on Feb. 13, 2019.
Prior Publication US 2021/0363412 A1, Nov. 25, 2021
Int. Cl. C09K 8/68 (2006.01); C09K 8/70 (2006.01)

CPC C09K 8/68 (2013.01) [C09K 8/70 (2013.01)]

9 Claims

1. A diverting agent comprising:

a polyvinyl alcohol-based resin having 2.3 mol % to 15 mol % of a primary hydroxy group in the side chain thereof,

wherein a content of the polyvinyl alcohol-based resin is 50 mass % to 100 mass % with respect to the entire diverting agent.