US 2023/0147740 A1Published application

Diverting agent and method of filling fracture in well using the same

AssigneeMitsubishi Chemical Corporation

InventorsKazutoshi TSUJI, Norihito SAKAI, Tomoya FUJITA, Takahiro SAKA, Chizuko FURO

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Abstract

A problem to be solved of the present invention is to provide a diverting agent which gradually dissolves in water. The present invention relates to a diverting agent containing a polyvinyl alcohol-based resin and a method of filling a fracture using the diverting agent.

Claims13

Dependent claims

A diverting agent comprising:

a polyvinyl alcohol-based resin, wherein
an average degree of polymerization of the polyvinyl alcohol-based resin is from 150 to 4000.

Dependencies are inferred from the claim text.

Facts

Application: 18/090,917Filed 29 Dec 2022
Priority: JP 2017-15504010 Aug 2017
Published: 11 May 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

C09K 8/508
Containing organic compounds: macromolecular compounds
C09K 8/725
Eroding chemicals, e.g. acids: compositions containing polymers
C08F 8/00
Chemical modification by after-treatment
C08F 8/12
Chemical modification by after-treatment: hydrolysis

Family

Application16/782,415Continuation · filed 5 Feb 2020
Application18/090,917Continuation
US 11,597,870 B2Related patent
US 12,077,697 B2Related patent
US 2020/0172796 A1Published application
US 2023/0147740 A1This patent

From the US filing history. Foreign family members aren’t listed.

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