DIVERTING AGENT AND METHOD FOR OCCLUDING CRACKS ON WELL USING SAME

Title:

DIVERTING AGENT AND METHOD FOR OCCLUDING CRACKS ON WELL USING SAME

Document Type and Number:

WIPO Patent Application WO/2019/131939

Kind Code:

A1

Abstract:

The present invention provides a diverting agent comprising resin particles of a polyvinyl alcohol-based resin, the resin particles of the polyvinyl alcohol-based resin being a mixture of particles including two or more types of resin particles having different particle diameters from one another. The diverting agent includes 5-95 mass% of polyvinyl alcohol-based resin particles A having a particle diameter of 1,700 μm or larger and 5-95 mass% of polyvinyl alcohol-based resin particles B having a particle diameter of 250-1,000 μm.

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Inventors:

FUJITA TOMOYA (JP)
SAKA TAKAHIRO (JP)
FURO CHIZUKO (JP)

Application Number:

PCT/JP2018/048310

Publication Date:

July 04, 2019

Filing Date:

December 27, 2018

Export Citation:

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Assignee:

MITSUBISHI CHEM CORP (JP)

International Classes:

C09K8/80; C08L29/04; C09K8/508; E21B43/26

Domestic Patent References:

WO2015072317A1	2015-05-21
WO2015099131A1	2015-07-02
WO2014196474A1	2014-12-11
WO2015072317A1	2015-05-21

Foreign References:

US20160177693A1	2016-06-23
JP2016056272A	2016-04-21
JP2016056272A	2016-04-21
JP2016147971A	2016-08-18
JP2016147972A	2016-08-18
JP2002284818A	2002-10-03
JP2004285143A	2004-10-14
JP2006095825A	2006-04-13
JP2017254844A	2017-12-28

Other References: