Title:
ダイバーティングエージェント及びこれを用いた坑井の亀裂の閉塞方法
Document Type and Number:
Japanese Patent JP7326741
Kind Code:
B2
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.
Inventors:
Kazutoshi Tsuji
Norito Sakai
Tomoya Fujita
Takahiro Saka
Furo Chizuko
Norito Sakai
Tomoya Fujita
Takahiro Saka
Furo Chizuko
Application Number:
JP2018543180A
Publication Date:
August 16, 2023
Filing Date:
August 10, 2018
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
C09K8/506; C08F8/12; C08F216/06; C09K8/68; E21B43/26
Foreign References:
| US20140076570 | ||||
| CN104727800A | ||||
| US20160138376 | ||||
| US20170210965 | ||||
| US20060175059 | ||||
| US20120181034 | ||||
| CN106350043A | ||||
| CN105441047A | ||||
| CN105441043A |
Other References:
SUGAMA, T., et al.,Role of PVA Flakes in Promoting Self-Degradation of Sodium Metasilicate-Activated Cement under a Hyd,Journal of Technology Innovations in Renewable Energy,Vol.2, No.4,pp.352-365 (2013).
Attorney, Agent or Firm:
Patent Attorney Corporation Eiko Office