The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 2018
Filed:
Dec. 12, 2013
Applicant:
Toyo Seikan Group Holdings, Ltd., Tokyo, JP;
Inventors:
Seishi Yoshikawa, Kanagawa, JP;
Tsutaki Katayama, Kanagawa, JP;
Assignee:
TOYO SEIKAN GROUP HOLDINGS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/68 (2006.01); C09K 8/12 (2006.01); C09K 8/08 (2006.01); E21B 37/06 (2006.01);
U.S. Cl.
CPC ...
C09K 8/12 (2013.01); C09K 8/08 (2013.01); E21B 37/06 (2013.01);
Abstract
A dispersion solution for drilling obtained by dispersing, in an aqueous medium, a hydrolysable resin material that contains a resin that is hydrolysable but sparingly and a hydrolysable resin that accelerates the decomposition of esters. The dispersion solution for drilling exhibits a highly hydrolysable capability despite of using an inexpensive hydrolysable resin material, and can be favorably used for extracting resources relying on a well drilling method such as hydraulic fracturing method, rotary drilling method or riserless drilling method.