Abstract: A device is for directing a fluid flow in an annulus around a pipe string in a horizontal or deviated well. The device has an orientation sensing member adapted to distinguish between the high-side and the low-side of the borehole along the well path. A fluid direction member is adapted to impede the fluid flow in one portion of the annulus so as to at the same time increase the fluid flow in another portion of the annulus; and an activation member for activating the fluid direction member in the well.

Abstract: A device is for directing a fluid flow in an annulus around a pipe string in a horizontal or deviated well. The device has an orientation sensing member adapted to distinguish between the high-side and the low-side of the borehole along the well path. A fluid direction member is adapted to impede the fluid flow in one portion of the annulus so as to at the same time increase the fluid flow in another portion of the annulus; and an activation member for activating the fluid direction member in the well. A pipe string has a device according to the invention, as well as a method for operating a device according to the invention.