Patent ID: 7819193

Claim:
A downhole fracturing tool for fracturing operations in a wellbore annulus of a wellbore, the downhole fracturing tool comprising: an upper isolation device; a lower isolation device; a housing disposed between the upper and lower isolation devices, the housing comprising a housing bore, the housing bore comprising upper housing bore and lower housing bore, the upper housing bore being isolated from the lower housing bore within the housing bore, and the upper housing bore comprising a port in fluid communication with a wellbore annulus; a fluid injection line in fluid communication with the upper housing bore, the fluid injection line comprising a lowermost fluid injection line end, the lowermost fluid injection line end being disposed above and in substantial axial alignment with the port, the port being disposed in the upper housing bore at a location for directing fluid flow from the fluid injection line out of the upper housing bore into an annulus of a wellbore in a downward direction, the downward direction comprising an angle that is substantially parallel to a longitudinal axis of the downhole fracturing tool; a screen disposed at a lowermost end of the housing above the lower isolation device, the screen being in fluid communication with the wellbore annulus and a fluid return line, the fluid return line being disposed within the housing bore and in fluid communication with the wellbore annulus above the upper isolation device.