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:
Oct. 08, 2013
Filed:
Oct. 19, 2010
Sylvaine Le Roy-delage, Paris, FR;
Dominique Guillot, Fontenay aux Roses, FR;
Keith Dismuke, Katy, TX (US);
Erik Nelson, Houston, TX (US);
Sylvaine Le Roy-Delage, Paris, FR;
Dominique Guillot, Fontenay aux Roses, FR;
Keith Dismuke, Katy, TX (US);
Erik Nelson, Houston, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A self-adaptive cement system includes cement, water and at least one additive that reacts or/and expands in contact with oil and gas. Several chemical products have been identified including rubber alkylstyrene, polynorbornene, resins such precrosslinked substituted vinyl acrylate copolymers and diatomaceous earth. 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 with subterranean hydrocarbon fluids, the potential repair mechanism is thus activated if and when needed in case of start of loss of zonal isolation. In another embodiment, the expansion is deliberately induced by pumping a hydrocarbon fluid in the vicinity of the set cement.