Setting and retrieval device

Abstract

A setting and retrieval device includes a first connection device connected to a first connection interface of a plugging device and a second connection device connected to a second connection interface of the plugging device. The device includes a charging device having first and second fluid chambers, a displaceable charging piston, a power supplying device included a fluid pump device for pumping fluid between the first and second fluid chambers via first and second fluid channels, and a volume adjusting device including a volume adjusting piston displaceable into the first fluid chamber. The energy storing device is charged with potential energy by the charging piston moving in a first direction by pumping fluid from the first to the second fluid chamber and the energy stored in the energy storing device is discharged by movement in a second, axial, direction between the first and second connection devices.

1 . A setting and retrieval device for setting and/or retrieval of a plugging device in a well, the device comprising:
 a first connection device comprising a first connection interface adapted to be connected to a first plug connection interface of the plugging device, wherein the first connection device comprises a substantially sleeve-shaped body;   a second connection device comprising a second connection interface adapted to be connected to a second plug connection interface of the plugging device, wherein the second connection device comprises a substantially cylindrical body, wherein the substantially cylindrical body is located radially inside the substantially sleeve-shaped body and wherein the first and second plug connection interfaces are located in a lower end of the device;   a charging device comprising a first fluid chamber, a second fluid chamber and a displaceable charging piston, wherein the first and second fluid chambers are separated by a first separation wall protruding radially inwards from the substantially cylindrical body;   a triggering device adapted for triggering discharge of potential energy stored in an energy storing device;   a power supplying device comprising a fluid pump device for pumping fluid between the first and second fluid chambers via a first fluid channel and a second fluid channel, respectively; and   a volume adjusting device comprising a first volume adjusting piston displaceable into the first fluid chamber,   wherein the displaceable charging piston comprises a first end facing towards the second fluid chamber and protruding radially inwards from the substantially cylindrical body and a second end facing towards the energy storing device, wherein a volume of the second fluid chamber can be increased or decreased by movement of the displaceable charging piston,   wherein the first and second fluid chambers are provided radially between an outer surface of the substantially cylindrical body and an inner surface of the substantially sleeve-shaped body,   wherein the energy storing device is charged with potential energy by the displaceable charging piston moving in a first direction (A) caused by pumping fluid from the first fluid chamber to the second fluid chamber by the pumping device, and   wherein a relative movement in a second, axial, direction (B) between the first connection device and the second connection device is caused by discharging the potential energy stored in the energy storing device.   
     
     
         2 . The device according to  claim 1 , wherein the displaceable charging piston is movable in the second direction (B) during discharge of the energy storing device. 
     
     
         3 . The device according to  claim 1 , wherein the energy storing device is a spring device. 
     
     
         4 . The device according to  claim 1 , wherein the energy storing device is configured to be compressed by the displaceable charging piston. 
     
     
         5 . The device according to  claim 1 , wherein the first fluid channel is provided between the fluid pump device and the first fluid chamber and wherein the second fluid channel is provided between the fluid pump device and the second fluid chamber. 
     
     
         6 . The device according to  claim 1 , wherein the first connection device is provided radially outside the second connection device. 
     
     
         7 .- 9 . (canceled) 
     
     
         10 . The device according to  claim 1 , wherein the first volume adjusting piston is axially displaceable, wherein the axial displacement of the first volume adjusting piston in a first direction decreases the volume of the first chamber and axial displacement of the first volume adjusting piston in a second direction increases the volume of the first chamber. 
     
     
         11 . The device according to  claim 10 , wherein the first volume adjusting piston is provided radially between the first and second connection devices. 
     
     
         12 . The device according to  claim 10 , wherein the volume adjusting device comprises a second volume adjusting piston comprising a first end sealing an opening between the first and second connection devices, wherein a spring device is provided axially between a second end of the second volume adjusting piston and the first volume adjusting piston. 
     
     
         13 . The device according to  claim 12 , wherein the volume adjusting device comprises a movement restraining device fixed to the first volume adjusting piston for restraining the movement of the second volume adjusting piston in relation to the first volume adjusting piston. 
     
     
         14 . (canceled) 
     
     
         15 . The device according to  claim 2 , wherein the energy storing device is a spring device. 
     
     
         16 . The device according to  claim 2 , wherein the energy storing device is configured to be compressed by the displaceable charging piston. 
     
     
         17 . The device according to  claim 3 , wherein the energy storing device is configured to be compressed by the displaceable charging piston. 
     
     
         18 . The device according to  claim 2 , wherein the first fluid channel is provided between the fluid pump device and the first fluid chamber and wherein the second fluid channel is provided between the fluid pump device and the second fluid chamber. 
     
     
         19 . The device according to  claim 3 , wherein the first fluid channel is provided between the fluid pump device and the first fluid chamber and wherein the second fluid channel is provided between the fluid pump device and the second fluid chamber. 
     
     
         20 . The device according to  claim 4 , wherein the first fluid channel is provided between the fluid pump device and the first fluid chamber and wherein the second fluid channel is provided between the fluid pump device and the second fluid chamber.