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:
Nov. 26, 2019
Filed:
Oct. 22, 2015
Applicant:
Toyo Seikan Group Holdings, Ltd., Tokyo, JP;
Inventors:
Seishi Yoshikawa, Yokohama, JP;
Tsutaki Katayama, Yokohama, JP;
Assignee:
TOYO SEIKAN GROUP HOLDINGS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/26 (2006.01); E21B 33/13 (2006.01); E21B 33/14 (2006.01); E21B 21/00 (2006.01); C09K 8/80 (2006.01);
U.S. Cl.
CPC ...
E21B 33/143 (2013.01); E21B 21/003 (2013.01); E21B 43/26 (2013.01); C09K 8/80 (2013.01);
Abstract
A method of extracting the underground resources by pressurizing a fluid filled in an ore chute in which cracks are formed and by, further, forming or growing the cracks, the underground resources being extracted through the cracks, wherein a hydrolysis-blocking agent is introduced with pressure into the fluid to block a diverting agent that works to temporarily close the cracks.