UMBILICAL CABLE LAYOUT FOR DELIVERY OF GEOPHYSICAL INSTRUMENTS TO HORIZONTAL WELLS, METHOD OF ITS ASSEMBLY AND USE Russian patent published in 2014 - IPC E21B23/14 F16L11/00 

FIELD: mining.

SUBSTANCE: device for delivery of geophysical instruments to horizontal wells comprises umbilical cable layout of two umbilical cables of different diameter, arranged coaxially one in the other with a geophysical instrument at one end of one of the umbilical cables. The end of the umbilical cable of smaller diameter, inside the umbilical cable of the larger diameter has a piston coupled with the umbilical cable of the larger diameter. The umbilical cables are placed one inside the other along the entire length of the umbilical cable of the larger diameter in the initial mutual position. The device has a limiter of relative motion of the umbilical cables to the value not exceeding the length of the umbilical cable of the larger diameter. There is a pressure chamber with two coaxial holes in the opposite walls, the hole of the larger diameter is sealingly connected to the umbilical cable of the larger diameter, and the umbilical cable of the smaller diameter extends through the seal into the hole of the smaller diameter and through the hole of the larger diameter.

EFFECT: increasing reliability, improving smoothness of displacement of geophysical instrument.

4 cl, 1 dwg