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:
Nov. 09, 1999
Filed:
Feb. 24, 1998
Lynn P Tessier, Cochrane, CA;
Alberta Ltd., Calgary, CA;
Abstract
Apparatus is provided for stabilizing a PC pump suspended from production tubing. The stabilizing apparatus is connected to the pump and comprises a tubular body having a cylindrical wall, a longitudinal bore contiguous with the production tubing and three or more circumferentially-spaced linkages are disposed in longitudinal slots formed in the exterior of the tubular body. Each linkage comprises at least a passive and an active link pivotally connected end-to-end in series, the passive link being pivoted from the body. An annulus is formed within the cylindrical wall and contains a longitudinally movable annular piston pivotally connected to the active link. The annulus is connected to the bore so that the piston is pressurized dynamically with fluid from the bore. Fluid pressure drives the piston, actuating the active link, thereby causing the linkage to expand radially outwards, the radial force being proportional with the fluid pressure. Under production pressures, a very high stabilizing force is produced. Accordingly, at non-flowing conditions, the pressure diminishes and the linkages are only spring-loaded, permitting movement of the pump and tubing while maintaining tool and apparatus centralization.