EXTENDED REACH METHODS FOR MULTISTAGE FRACTURING SYSTEMS

摘要

A method and system of treating a horizontal wellbore having multiple production zones. A bottom hole assembly connected to coiled tubing is positioned within the horizontal wellbore. The friction between the casing of the horizontal wellbore and bottom hole assembly and coiled tubing may prevent the bottom hole assembly from traversing the entire length of the horizontal wellbore. After treating a zone within the wellbore, a flush fluid with a lubricant may be pumped down the annulus between the coiled tubing and the casing. The lubricant may reduce the coefficient of friction between the casing and the coiled tubing permitting the bottom hole assembly to travel farther into the horizontal wellbore. The bottom hole assembly may include a vibratory device that may be actuated to reduce the coefficient of friction between the casing and the coiled tubing permitting the bottom hole assembly to travel farther into the horizontal wellbore.