Patent ID: 7258323
Filing Date: 2007-08-21
Classification: E21B,F16K

Abstract:
1. A variable radial flow rate control valve, the valve comprising: a body forming a bore along the longitudinal axis thereof for transporting a fluid through the body; a fixed choke member fixedly positioned about the bore, the fixed choke member forming a fixed aperture; a rotational choke member rotationally positioned about the bore, the rotational choke member forming a rotational aperture radially corresponding to the fixed aperture; a fluid passage formed radially between the bore and the exterior of the body when the corresponding apertures overlap; a motor functionally connected to the rotational choke member, the motor including a hydraulically driven sleeve linearly moveable relative to the longitudinal axis of the body and a rotational sleeve in rotating connection between the linear sleeve and the rotational choke member, wherein the rotational sleeve and the rotational choke member rotate about the longitudinal axis of the body in response to linear movement of the linear sleeve; and a control line in operational connection with the motor: wherein the rotational choke member is rotatably, but not axially, moveable in relation to the fixed choke member between variable radial flow rate positions.