BOREHOLE EQUIPMENT CONTROL DEVICE Russian patent published in 2015 - IPC E21B47/18 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry. The invention offers the device for creation of pressure impulse for start of the equipment actuated by the fluid medium pressure and located in the pipe (12) for the fluid medium transmission in which the pipe wall section (27) has through holes and on the outer side of the section (27) the flexible membrane is located (24). And the named flexible membrane (24) is implemented with a possibility of isolation of the fluid medium F1 located in the named pipe for the fluid medium transmission from the fluid medium F2 located in another channel (30) which is interconnected by flow with the equipment. Meanwhile the membrane (24) due to its elasticity transfers pressure changes (pressure impulses) in the fluid medium F1 located in the pipe (12) to the fluid medium F2 located in the named another channel (30). Besides, each drilled hole (50) passing through the pipe section wall (27) limits the central concentric drilled hole (56) each end of which forms the cone-shaped expansion directed respectively towards the internal wall (121) and the external wall (21) of the pipe section (27). Meanwhile in the drilled-out hole/channel passing through the pipe wall (12/27) the collapsing disk (62) is located which forms the removable dividing plate between two areas F1 and F2 of the fluid medium which have the P1 and P2 respectively.

EFFECT: avoidance of blockage by slime and other solid particles that provides increase of the device operability.

7 cl, 6 dwg