Patent ID: 6073697
Filing Date: 2000-06-13
Classification: E21B

Abstract:
A method of forming a wellbore junction, the method comprising the steps of:drilling a first wellbore;providing a tubular member interconnected in a tubular string, the tubular member having an opening formed through a sidewall portion thereof, and a blocking member selectively positionable relative to the opening in a first position in which the blocking member blocks the opening and a second position in which the blocking member permits access through the opening;positioning the tubular member within the first wellbore;cementing the tubular string within the first wellbore;shielding the blocking member during the cementing step in a manner permiting the blocking member to be shifted from its first position to its second position subsequent to the perfomance of the cementing step;positioning the blocking member in the second position; anddrilling a second wellbore by passing at least one cutting tool through the opening.