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:
Jun. 18, 2013
Filed:
Oct. 12, 2011
Applicants:
Luigi Merli, Albizzate, IT;
Francesca Giani, Albizzate, IT;
Pierangelo Pirovano, Albizzate, IT;
Giovanni Floridi, Albizzate, IT;
Giuseppi LI Bassi, Albizzate, IT;
Inventors:
Luigi Merli, Albizzate, IT;
Francesca Giani, Albizzate, IT;
Pierangelo Pirovano, Albizzate, IT;
Giovanni Floridi, Albizzate, IT;
Giuseppi Li Bassi, Albizzate, IT;
Assignee:
Lamberti SpA, Albizzate, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 8/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The hydration of clays in drilling operations can be inhibited by employing a an aqueous based drilling fluid containing from about 0.2 to about 5 wt % of a hydration inhibitor that comprises bis-hexamethylene-triamine, bis-hexamethylene-triamine salts, or mixtures thereof.