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. 21, 2005
Filed:
Jul. 17, 2003
Sylvaine Leroy-delage, Paris, FR;
Bernard Dargaud, Elancourt, FR;
Marc Thiercelin, Ville d'Avray, FR;
Jean-françois Baret, Paris, FR;
Sylvaine Leroy-Delage, Paris, FR;
Bernard Dargaud, Elancourt, FR;
Marc Thiercelin, Ville d'Avray, FR;
Jean-François Baret, Paris, FR;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Cementing compositions for oil wells or the like comprise between 30% and 100% (by weight of cement) of rubber particles, with grain size in the 40-60 mesh range. Adding rubber particles in accordance with the invention produces a low density slurry while keeping the cement permeability low. Compositions of the invention are particularly advantageous for cementing zones subjected to extreme dynamic stresses such as perforation zones and the junctions of branches in a multi-sidetrack well.