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:
Jul. 19, 2016
Filed:
Apr. 28, 2011
Olivier Porcherie, Paris, FR;
Elena Pershikova, Paris, FR;
Nigel Evans, Paris, FR;
Hafida Achtal, Clamart, FR;
Yamina Boubeguira, Clamart, FR;
Benedicte Ayache-zusatz, Châtenay Malabry, FR;
Olivier Porcherie, Paris, FR;
Elena Pershikova, Paris, FR;
Nigel Evans, Paris, FR;
Hafida Achtal, Clamart, FR;
Yamina Boubeguira, Clamart, FR;
Benedicte Ayache-Zusatz, Châtenay Malabry, FR;
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Abstract
Organic compounds containing at least one nitrogen atom are particularly suitable as retarders for geopolymeric systems employed as well cements. Preferred compounds include aminated polymers, amine phosphonates, quaternary ammonium compounds and tertiary amines. The geopolymeric compositions are suitable for primary cementing and remedial cementing operations. The preferred temperature range within which the retarders operate is between about 20° C. and 120° C.