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:
May. 05, 2009
Filed:
Jul. 22, 2004
Martin Gerard Rene Bosma, Assen, NL;
Erik Kerst Cornelissen, Rijswijk, NL;
Juul Cuijpers, Eindhoven, NL;
Francesco Picchioni, Groningen, NL;
Sanjay Rastogi, Eindhoven, NL;
Martin Gerard Rene Bosma, Assen, NL;
Erik Kerst Cornelissen, Rijswijk, NL;
Juul Cuijpers, Eindhoven, NL;
Francesco Picchioni, Groningen, NL;
Sanjay Rastogi, Eindhoven, NL;
Shell Oil Company, Houston, TX (US);
Abstract
A system is provided for sealing a space in a wellbore formed in an earth formation. The system has a swelleable body arranged in the wellbore in a manner so as to seal the space upon swelling of the swelleable body, the swelleable body being susceptible of being in contact with formation water flowing into the wellbore, the swelleable body including a matrix material provided with a compound soluble in the formation water. The matrix material substantially prevents or restricts migration of the compound out of the swelleable body and allows migration of the formation water into the swelleable body by osmosis so as to induce swelling of the swelleable body upon migration of the formation water into the swelleable body.