Patent ID: 9115558
Filing Date: 2015-08-25
Classification: E21B

Abstract:
1. A method of completing a wellbore using a bottom hole assembly requiring only one direction of flow, the wellbore having been lined with a string of production casing along a subsurface formation, and the method comprising: running a bottom hole assembly into the wellbore on a lower end of a string of coiled tubing, the bottom hole assembly comprising: locating the bottom hole assembly at a selected zone of interest in the subsurface formation; injecting fluids down the coiled tubing and into the bore of the tubular housing at a first flow rate, thereby causing the fluids to flow through the at least one orifice in the piston, through the at least one flow port in the mandrel, around the distal end of the mandrel, through the seat, and back up an annular region defined between the bottom hole assembly and the surrounding production casing; further injecting a fluid down the coiled tubing and into the bore of the tubular housing at a second flow rates that is higher than the first flow rate, thereby increasing a hydraulic force acting on the pressure shoulder of the piston and causing the mandrel to slide from its open position to its closed position wherein the plunger is landed on the seat, thereby forcing the injected fluid to flow through the nozzles in the tubular housing; and injecting a jetting fluid through the nozzles in the tubular housing, thereby jetting one or more perforations through the production casing at the selected zone of interest along the wellbore.