| 摘要 |
<p>The invention relates to jet device used for extracting oil from wells. The inventive device comprises a packer, a pipe column, a jet pump, a transmitter and a receiver of physical fields. The body of the pump comprises a through stepped channel embodied in a parallel position with respect to the axes of the pipe column and having a seat disposed between steps for arranging a sealing unit, which is provided with an axial channel. Said pump body is also provided with an active nozzle. The axis of the active nozzle is disposed in a parallel position with respect to the axis of the through channel at a distance equal to or higher than 1.1 of the radius thereof. The diameter of the through channel above the seat is 0.5 mm greater than the diameter thereof below said seat. The diameter of the axial channel of the sealing unit is equal to or less than 0.6 of the external diameter thereof. The sealing unit is arranged in such a way that it is movable along a cable above a bit and successfully replaceable by the following functional inserts: a blocking insert, depression insert etc. Said inserts are provided with attachments for transporting them to the pump and extracting therefrom and for arranging instruments and samplers thereon. Said invention makes it possible to optimise the dimensions of the elements of the device and increases the reliability thereof.</p> |
