System and Method for Controlling Placement of a Flowable Material in a Well with a Low Formation Pressure

A method for controlling the location of a treatment fluid in a low pressure well where a well bore extends into and communicates with a reservoir formation, the method comprising:

• providing a system system comprising a valve and a packer for controlling a location of a displacement fluid or a treatment fluid in a low pressure well where a well bore extends into and communicates with a reservoir formation, wherein said valve comprises a valve housing;
• a pressure activated valve body that is axially movable in the valve housing between a closed position and at least a partly open position, the valve body having a surface facing a pressurized liquid, wherein movement of the valve body is opposed by a resilient element, and wherein the valve is designed to open at a specific pressure;
• the valve housing having at least one valve opening that is exposed for pressurized fluid when the valve body is moved to its at least partly open position;
• wherein the packer is peripherally positioned at the outside of the valve housing, the packer forms a barrier such that fluid cannot flow upwards and bypass the packer and the valve housing, and the system is adapted to be releasable from a string within the well bore, said string being selected from a group consisting of a coiled tubing and a wireline;
• lowering the system at a desired depth in the well bore by the string;
• releasing the string from the system within the well bore and withdraw the string to a surface;
• filling a space above the valve in sequence with a displacement fluid, a treatment fluid and a displacement fluid;
• increasing a fluid pressure in the space to open the valve and achieve a desired fluid flow rate through the valve at a reduced pressure downstream the valve;
• pumping a fluid through the valve until the treatment fluid is displaced to a target zone, said fluid comprising a well fluid, the displacement fluid or the treatment fluid;
• and
• injecting the well fluid into a formation.