Patriot retrievable production packer

Abstract

The present invention provides a tool capable of being set and released without requiring the complexity of former tools. A novel arrangement of a push sleeve in the spring body eliminates the need for several shear pins while an internal J slot formed directly on the mandrel significantly reduces the size of the lower drag body and thus the length of the tool. These and other improvements to the packer tool result in a significantly simplified tool capable of meeting the full requirements of a production packer.

1 . A wireline set packer tool for use with a wireline pressure setting assembly to engage and releasably secure a packer with the surface which defines an opening in a well bore, the wireline set packer tool including: 
 a mandrel;    said mandrel having a longitudinal bore therein and an upper and a lower end;    a packer support on said mandrel;    a packer on said packer support;    said packer support having an upper end;    said packer support having a lower end;    said packer support lower end including an end portion movable relative to said packer support to expand and engage the packer with the surface which defines the opening in the well bore;    a spring support body on said mandrel;    said spring support body having a lower end;    a collapsed spring supported by said spring support body;    a frangible member releasably securing said spring support body with said collapsed spring thereon on said mandrel;    a member surrounding a portion of said mandrel;    said member having an upper end adjacent said packer support movable end portion;    said member having a lower end;    a J slot on said member having longitudinally extending main slot portion communicating with a circumferentially offset slot portion at each end of said main slot portion to provide upper and lower slot portions on said member;    lug means on said mandrel in said lower slot portion on said member; and    first cooperating surfaces on said upper end of said packer support and on said lower end of said spring support body and second cooperating surfaces on said lower movable end portion of said packer support and on said upper end of said member to releasably secure said packer engaged with the surface defining the opening in the well bore.    
   
   
       2 . A packer tool for releasably securing a packer within a well bore, the packer tool including: 
 a mandrel;    said mandrel having a longitudinal bore therein and an upper and a lower end;    a packer support on said mandrel;    a packer on said packer support;    said packer support having an upper end;    said packer support having a lower end;    said packer support lower end including an end portion movable relative to said packer support to expand and engage the packer within the well bore;    a member surrounding a lower portion of said mandrel;    said member having an upper end adjacent said packer support movable end portion;    said member having a lower end; and    cooperating surfaces on said lower movable end portion of said packer support and on said upper end of said member to releasably secure said packer engaged with the surface defining the opening in the well bore.