CABLE ENTRY Russian patent published in 2012 - IPC E21B33/68 

FIELD: oil industry.

SUBSTANCE: invention relates to the field of oil industry, and namely to the wellhead equipment, and is intended for sealing the cable cords at the input of the production trees. The cable entry includes a frame, sealing package that includes two elastic elements with at least one hole for the cable cord, intermediate sleeve and intermediate goals. The entry is equipped with a contracting nut which, through the intermediate sleeve with internal conical surface, is mounted with the ability of compression in the longitudinal direction of the elastic seals arranged symmetrically with respect to the installed intermediate goal between them. The cavity formed between the gaskets in which there is at least one intermediate goal is connected, by the communicating channels, with the pressure testing, drain valves and with the outlet hole for the pressure gauge located in the contracting nut on its end surface. The intermediate sleeve is fixed relative to the frame by means of keyed connection.

EFFECT: more reliable sealing of the cable cords in the operation and carrying out the pressure test to verify the sealing without killing the well, prevention of twisting of the cable cords during installation, as well as increase of operational properties.

1 dwg, 3 dwg