Patent ID: 6209644
Filing Date: 2001-04-03
Classification: E21B

Abstract:
An assembly for forming a seal at the junction of a lateral well bore drilled through a window at least a main well bore casing comprisinga tubular means for being run into said well bore casing,at least one orientation means for orientation of said tubular means in said main well bore casing,a tubular sleeve means having an aperture through at least one side of said tubular sleeve means for being run into said well bore casing for alignment of said aperture with said window in said well bore casing and having a seating surface inside said tubular sleeve means proximate said aperture,a sealing means positioned about said tubular means for seating with said seating surface inside said tubular sleeve means proximate said aperture in said tubular sleeve means and for forming a seal when said sealing means is brought into engagement with said seating surface inside said tubular sleeve means proximate said aperture as said tubular means is run into said well bore and said lateral well bore,a deflection means positioned and releasably sealed in said tubular sleeve means for deflecting said tubular means through said window when said tubular means is run into contact with said deflection means, andat least one orientation means for orientation of said deflection means relative to said window in said at least one well bore casing for deflecting said tubular means through said window and for aligning said aperture through said at least one side of said tubular sleeve means with said window.