Patent ID: 6481502
Filing Date: 2002-11-19
Classification: E21B,F42D

Abstract:
A plug for use in a borehole, the plug including a body member of a flexible material which defines a receptacle in which material to be supported is received, the body member defining a floor portion, with a wall portion bounding and extending from the floor portion for engagement with an inner wall of the borehole for sealing the borehole, with the wall portion extending from the floor portion in a flared manner such that a rim of the wall portion bounds an opening having a greater area than that of the floor portion, wherein one end of the wall portion is lower than an opposed higher end, the lower end being a leading end and the higher end being a trailing end of the body member when it is inserted into the borehole, the body member defining an offset frusto-conical element so that an axis of the frusto-cone is at a predetermined angle to the vertical when the body member is lying on its rim which plug includes an attachment means carried by the body member for attaching a manipulating means to the body member to control its positioning within the borehole.