A method for forming a lateral junction in an open hole section of a wellbore includes lowering a tubular member through a cased section of the wellbore. Thereafter, the tubular member is expanded in an open hole section of the wellbore, thereby anchoring the tubular member in the wellbore in a manner that leaves an open hole section of the wellbore between the expanded, tubular member and the cased section. Thereafter, a window is formed in a sidewall of the tubular member, and a lateral wellbore is drilled through the window.