APPARATUS AND METHOD FOR REAMING A WELLBORE DURING THE INSTALLATION OF A TUBULAR STRING

摘要

An apparatus for reaming a wellbore without rotating a tubular string that is extendable to a surface. A mandrel (102) is coupled to a downhole end of the tubular string. The mandrel (102) has at least one groove (110) in a sidewall portion thereof. A sleeve (112) is operably associated with the mandrel (102) such that longitudinal travel of the mandrel (102) relative to the sleeve (112) shifts the sleeve (112) between extended and contracted positions relative to the mandrel (102). A reamer shoe (122) is coupled to a downhole end of the sleeve (112). At least one coupling device (116) is operably associated with the sleeve (112) and extendable into the at least one groove (110) such that longitudinal travel of the mandrel (102) relative to the sleeve (112) caused the sleeve (112) to rotate relative to the mandrel ( 102), thereby rotating the reamer shoe ( 122).