Rubber Sleeve Protection Ring and Downhole Plugging Apparatus

摘要

A rubber sleeve protection ring and a downhole plugging apparatus are described in the present invention. Said rubber sleeve protection ring comprises several protection units which are arranged in a circle; each protection unit has a seal protrusion extending outwards and a seal groove corresponding to the seal protrusions, wherein the seal protrusions are embedded in the seal grooves on each adjacent protection unit; at least one end faces of the protection unit is an inclined surface, wherein the direction of said inclined surface leads the protection unit moving radially and outwards when applying force on the end face.

主权项

1. A rubber sleeve protection ring, comprising:
a plurality of protection units 7 which are arranged in a circle; each of the protection unit 7 is provided with a seal protrusion 701 that extends outwards, and each of the protection unit is provided with a seal groove 702 corresponding to the seal protrusion 701, the seal protrusions 701 could be embedded in the seal grooves 702 of the adjacent protection unit 7; at least one end face of the protection unit 7 is set as inclined surface, wherein a direction of the inclined face would ensure the protection unit 7 moving radially outwards under pressure.