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. 04, 2010
Filed:
Sep. 20, 2007
Kazumasa Kanayama, Kanagawa-ken, JP;
Ryuki Odashima, Kanagawa-ken, JP;
Shunetsu Onodera, Gloucestershire, GB;
Hitoshi Sugiyama, Kanagawa-ken, JP;
Hideki Kinjo, Kanagawa-ken, JP;
Kazumasa Kanayama, Kanagawa-ken, JP;
Ryuki Odashima, Kanagawa-ken, JP;
Shunetsu Onodera, Gloucestershire, GB;
Hitoshi Sugiyama, Kanagawa-ken, JP;
Hideki Kinjo, Kanagawa-ken, JP;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A circulation pump for circulating downhole fluids is provided. The circulation pump includes a cylindrical pump housing, a shaft secured in the pump housing extending in a longitudinal direction thereof, an impeller rotating around the shaft in the pump housing, a cylindrical magnetic coupler rotating around the pump housing, the cylindrical magnetic coupler including a magnet, and a motor positioned outside of the pump housing and connected to the magnetic coupler to rotate the magnetic coupler around the pump housing. The impeller is provided with a magnetic piece, which is capable of being magnetically connected with the magnet of the cylindrical magnetic coupler to cause the impeller to rotate around the shaft by rotating the cylindrical magnetic coupler around the pump housing.