Patent ID: 6684947
Filing Date: 2004-02-03
Classification: E21B

Abstract:
An apparatus for radially expanding a tubular member, comprising:a tubular support member defining an internal passage; an expandable tubular member defining an internal passage for receiving the tubular support member coupled to the tubular support member; a mandrel defining an internal passage for receiving the tubular support member movably coupled to the tubular support member and positioned within the expandable tubular member; an annular expansion cone coupled to the mandrel for radially expanding the expandable tubular member; and a lubrication assembly coupled to the mandrel for supplying a lubricant to the interface between the annular expansion cone and the expandable tubular member, comprising: a lubrication fitting defining a first lubrication supply passage and a passage for receiving an end of the mandrel coupled to the end of the mandrel; a sealing member coupled to the lubrication fitting; a body of lubricant fluidicly coupled to the first lubrication supply passage positioned in an annular chamber defined by the space between the sealing member, the lubrication fitting, and the expandable tubular member; and a second lubrication supply passage fluidicly coupled to the body of lubricant defined between the mandrel and the expandable tubular member fluidicly coupled to the body of lubricant for supplying the lubricant to the interface between the annular expansion cone and the expandable tubular member.