Well jet device for well testing and development and operating method for the well jet device

Abstract

The invention relates to jet devices for extracting oil from wells and intensifying the oil influx rate. An output cone, a packer and a jet pump are mounted on a tubing string. One or several active nozzles are arranged inside the pump body, and a stepped pass channel provided with a mounting seat for a pressure-sealing unit which is disposed between stages and several channels for supplying a pumped-out medium are embodied inside said pump body. The axes of the nozzles are disposed in a parallel position with respect to the axis of the pass channel at a certain distance therefrom. The inventive device is provided with a radiator and a receiver-transducer of physical fields mounted on a cable in such a way that it is replaceable by other instruments. Said cable passes through the axial channel of the sealing unit which is arranged in such a way that it is successively replaceable by functional inserts such as a testing and depression inserts etc. Said inserts are provided with mechanisms for bringing them to the pump body and for extraction therefrom. Mounting seats for back valves and plugs are embodied in the lower part of the channels for supplying the pumped-out medium. The dimension ratios of the elements of the inventive device are also disclosed. The aim of the invention is to optimise the dimensions of the elements of said device and increase the performance thereof.