Patent ID: 6047774
Filing Date: 2000-04-11
Classification: E21B

Abstract:
A multilateral tool for reducing the time required for drilling and completing a multilateral well, said multilateral tool comprising:(a) a main casing section:(b) a carrier casing section having a first end coaxially connectable to a primary casing and a second end connectable to said main casing section, and having a first preformed window near said second end thereof;(c) a lateral casing section having a first end and a second end, and having a second preformed window near said first end thereof;(d) wherein said carrier casing section is adapted for closely receiving said lateral section coaxially, with said first end of said carrier casing section being adjacent to said first end of said lateral casing section when said lateral casing section is received in said carrier casing section and(e) means for releasably holding said lateral casing section within said carrier casing section;(f) diverting means positioned in said second end of said carrier casing section for diverting said lateral casing section through said first preformed window when said lateral casing section is advanced toward said second end of said carrier casing section; and(g) wherein said carrier casing section and said primary casing section are coaxially aligned and said second preformed window is aligned with the bore of said primary casing when said lateral casing section is fully extended through said first preformed window, thereby permitting recovery of said diverting means through said second preformed window.