PACKER OF KHALOV Russian patent published in 2011 - IPC E21B33/12 

FIELD: gas and oil production.

SUBSTANCE: packer consists of hollow tubular case, of metal ingot of low temperature of melting concentrically secured on it, of thermo-sensitive element, of drain reservoir connected to case by means of hydraulic lines filled with fusible metal and of heater. Additionally the packer consists of two tubular hollow reservoirs of variable capacity concentrically fixed in the case. One of them has a shape of a tube and is equipped with a collar made of plastic material, for example, of copper, while another has a shape of a chamber equipped with a flexible, for example, rubber collar. At least part of hydraulic lines is arranged in a direction lengthwise relative to the case. The ingot is placed inside the tube and has similar to it shape. The thermo-sensitive element corresponds to wire of band of alloy with effect of shape memory, for example, of titanium nickelide and is wound along total length around the collar of the tube. The chamber equipped with the flexible collar is connected with one end side with the tube by means of corresponding hydraulic lines, while its another side it is connected with a drain reservoir.

EFFECT: expanded functionality of packer.

4 cl, 7 dwg