FIELD: machine building.
SUBSTANCE: group of inventions relates to device and method of imparting mobility to a drilling sludge in a well shaft. Method of imparting mobility to the drilling sludge contains an activation of the drill string pipe component of the drill string and deployment of the drill string in the borehole. Drill string pipe component has a device for providing mobility to the drilling sludge in the borehole, containing at least one radial impeller in a form of radial ledge extending from the drill string pipe component, and besides, the radial ledge is made to apply radial head to the flow in the drilling sludge purging solution, first and second axial impellers in the form of radial ledges extending radially from the pipe component, and besides, the first and the second axial impeller are created on axially spaced apart points at the pipe component and relative to radial impeller in a way, that the radial impeller is located axially between the axial impellers. And that the first axial impeller is located on the drift side of the pipe component, and it has at least one screw section on this end from the drift side, expanding along a spiral around the pipe component, and at least one straight section from the side of the mouth, forming channels, which are parallel to longitudinal axis of the pipe component. Second axial impeller is located on the side of the mouth of the pipe component, and it has at least one screw section on the end from the side of the mouth, expanding along the spiral around the pipe component, and at least one straight section from the drift side, forming channels, which are parallel to longitudinal axis of the pipe component. And that the method involves a passage of fluid media at the radial impeller and discharge of fluid media, passing along the radial impeller radially outward from an external surface of the pipe component, and an application of the axial head to fluid media passing through annular space between the pipe component and the borehole using the axial impellers. Direction of the axial head applied to the fluid media of the first axial impeller is opposite to the direction of the axial head applied to the fluid media of the second axial impeller.
EFFECT: technical result is a smooth movement of the drilling string without slowdowns and stops.
25 cl, 18 dwg
