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. 30, 2012
Filed:
May. 21, 2010
Kuo-chiang Chen, Sugar Land, TX (US);
Hitoshi Tashiro, Cambridge, MA (US);
Iain Cooper, Sugar Land, TX (US);
Jahir Pabon, Newton, MA (US);
Murat Ocalan, Boston, MA (US);
Kuo-Chiang Chen, Sugar Land, TX (US);
Hitoshi Tashiro, Cambridge, MA (US);
Iain Cooper, Sugar Land, TX (US);
Jahir Pabon, Newton, MA (US);
Murat Ocalan, Boston, MA (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A mechanism for selectively activating a plurality of downhole pathways including a) a valve having: i) a sleeve coupled for movement between an open and normally closed position; and ii) a valve magnet set mounted to the sleeve; and b) a dart for pumping in hole including a dart magnet set matched to the valve magnet set such that the dart couples to the valve when in close proximity and, in turn, the sleeve moves from the closed position to the open position.