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. 20, 2019
Filed:
Aug. 11, 2015
Applicant:
Toyo Seikan Group Holdings, Ltd., Tokyo, JP;
Inventors:
Assignee:
TOYO SEIKAN GROUP HOLDINGS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 3/12 (2006.01); C08L 67/04 (2006.01); C09K 8/035 (2006.01); C08K 5/11 (2006.01); C08L 101/16 (2006.01); C09K 8/508 (2006.01); C09K 8/516 (2006.01); C09K 8/68 (2006.01); C09K 8/70 (2006.01); C09K 8/88 (2006.01); C09K 8/92 (2006.01); E21B 43/16 (2006.01);
U.S. Cl.
CPC ...
C08J 3/12 (2013.01); C08K 5/11 (2013.01); C08L 67/04 (2013.01); C08L 101/16 (2013.01); C09K 8/035 (2013.01); C09K 8/5086 (2013.01); C09K 8/516 (2013.01); C09K 8/68 (2013.01); C09K 8/70 (2013.01); C09K 8/885 (2013.01); C09K 8/92 (2013.01); C08J 2300/20 (2013.01); C08J 2367/04 (2013.01); C08J 2401/10 (2013.01); E21B 43/16 (2013.01);
Abstract
A powder comprising hydrolyzable resin particle, containing particles which do not pass through a sieve having an opening size of 500 μm in an amount of 50 mass % or more and having a repose angle of 51° or more. This powder is preferably used as an additive for drilling to enhance the drilling properties of a drilling fluid and improve the retentivity of a fracture extending from a winze.