Patent ID: 6457525
Filing Date: 2002-10-01
Classification: E21B

Abstract:
A method for producing hydrocarbons from multiple zones wherein a main wellbore has been drilled through an upper production zone and into a lower production zone, said method comprising:positioning a whipstock within said main wellbore at a point adjacent said upper production zone, wherein said whipstock has a face in which at least one opening passes therethrough, said at least one opening being initially blocked by a plug of dissolvable material; using said whipstock to drill and complete a lateral wellbore from said main wellbore into said upper production zone; establishing fluid communication through said whipstock by dissolving said plug of dissolvable material after said lateral wellbore has been completed into said upper production zone; and producing flow from said lower production zone up through said main wellbore and through said whipstock with flow from said upper production zone.