Hydraulic assist deployment system for artificial lift systems

摘要

A well conveyance system couples to an uphole end of an artificial lift system and operates to push the artificial lift system through a tubing string for deployment in a wellbore. The well conveyance system includes a wellbore tractor adapted to push the artificial lift system through the tubing string and a swab cup assembly having a swab cup and a perforated nipple extending therethrough. The perforated nipple includes a nipple passage allowing for fluid flow from an area downhole from the swab cup to an area uphole from the swab cup when the wellbore tractor operates. A valve selectively blocks the perforated nipple to permit a hydraulic pressure to be applied to the tubing string uphole of the swab cup, exerting a downhole force on the swab cup to aid in deployment of the artificial lift system.

主权项

1. A well deployment system for conveyance of an artificial lift system (ALS) within a horizontal section of a well production string supported at a wellhead, the ALS includes a pump portion and a motor portion, the well deployment system comprising:
a wellbore tractor connected to a power umbilical extending through the production string and the wellhead to supply power to the tractor, the wellbore tractor being coupled to the ALS to push the ALS through the production string, the wellbore tractor and the ALS defining a downhole assembly; a swab cup mounted to the downhole assembly and in sliding engagement with the production string, the swab cup adapted to selectively receive a hydraulic fluid pressure applied to the interior of the production string at the wellhead to assist the wellbore tractor in conveying the ALS through the production string; a valve positioned in the downhole assembly, the valve having an open position permitting uphole fluid flow in the production string past the swab cup and a closed position preventing downhole fluid flow in the production string past the swab cup to enable hydraulic fluid pressure to be applied from the wellhead to the swab cup; wherein the valve is connected with the power umbilical for moving the valve between the open and closed positions; and a perforated nipple coupled to the wellbore tractor between the swab cup and the wellbore tractor, the perforated nipple having a perforation uphole from the valve to provide an uphole flowing fluid channel through the swab cup while the valve is in the open position during conveyance of the ALS.