FIELD: cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells.
SUBSTANCE: device comprises actuating member, which may be displaced from the first position into the second position under the action of predetermined flowable medium pressure. The actuating member may be temporarily retained in the first position. Device also has tool displaceable by means of actuating tool to perform operation in well as actuating member is shifted from the first position into the second one. Actuating member includes vessel with gas. In the first actuating member position vessel volume exceeds that in the second actuating member position. In the first actuating member position vessel pressure is less than flowable medium pressure inside well at depth at which operation is to be performed. Actuating member may be displaced from the first position under the action of predetermined flowing medium pressure increase to be applied to outer surface thereof.
EFFECT: increased ability of operation performance in well bore.
9 cl, 5 dwg
