ACTUATING SYSTEM AND METHOD OF DRIVING DOWNHOLE TOOL Russian patent published in 2016 - IPC E21B23/04 E21B34/16 

FIELD: mining.

SUBSTANCE: group of inventions can be used in downhole tools. Downhole tool comprises a body with an axial channel extending through it, at least partially, and a chamber located radially outward from the channel. Valve located in the channel and made with a possibility of movement between the first position, in which it prevents fluid flow from the channel into the chamber through a port, and the second position in which it allows fluid to flow from the channel into the chamber through the port. Engine located in the channel and configured to move the valve between the first and second positions. Driven component of the downhole tool, for example, cutter blocks of a well expander, movably connected with its body and configured to change over from idle to working states in response to inflow of liquid through the port into the chamber. Downhole receiver connected with the engine and configured to receive a signal from a remote location. Note here, that the signal controls one or more actions of the engine for movement of the valve between the first and second positions.

EFFECT: technical result consists in improvement of efficiency of the downhole tool.

27 cl, 34 dwg