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. 25, 2013
Filed:
Sep. 28, 2010
Sylvaine Le Roy-delage, Paris, FR;
Muriel Martin-beurel, Rijswijk, NL;
Keith Dismuke, Katy, TX (US);
Erik Nelson, Houston, TX (US);
Sylvaine Le Roy-Delage, Paris, FR;
Muriel Martin-Beurel, Rijswijk, NL;
Keith Dismuke, Katy, TX (US);
Erik Nelson, Houston, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A self-healing cement system includes cement, water and at least one additive that swells in contact with water from reservoir or from formation in the case of a structural failure in the set cement to provide a physical barrier in the zone of failure. Examples of such material include particles of super-absorbent polymer. These additives have the effect of making the cement self-healing in the event of physical failure or damage such as micro-annuli. The self healing property is produced by the contact of the water itself, the potential repair mechanism is thus activated if and when needed in case of start of loss of zonal isolation. Several super-absorbent polymers have been identified such as polyacrylamide, modified crosslinked poly(meth)acrylate and non-soluble acrylic polymers.