Patent ID: 9416592
Filing Date: 2016-08-16
CPC Classification: E21B

Claim Text:
1. A downhole tool comprising: a tool body aligned longitudinally along a centerline of the tool, the tool body comprising at least one aperture there through that is operable to pass a fluid to an exterior of the body; a stator fixed relative to the tool body and comprising a first fluid flow restriction that is operable to pass at least a portion of the fluid from an interior of the stator to the exterior of the body at an adjustable flow rate, the stator comprising an outer radial surface; and a rotor disposed within the tool body and rotatable relative to the stator such that a fluid interface is defined between the rotor and stator, the rotor comprising an inner radial surface and at least one exhaust port selectively aligned with at least one aperture through the tool body by rotation of the rotor relative to the stator, the exhaust port operable to pass at least a portion of the fluid from an interior of the rotor to the aperture and to the exterior of the body when aligned with the aperture, the fluid interface defined between the inner radial surface of the rotor and the outer radial surface of the stator and comprising a fluid bypass between the rotor and the stator that comprises a second fluid flow restriction; wherein the inner radial surface of the rotor and the outer radial surface of the stator are adjacent and parallel along the centerline of the tool.