Patent ID: 7066268

Claim:
The well jet device comprising a packer, a piping string and a jet pump, in a body of which an active nozzle with a mixing chamber are arranged and a stepped through passage is made with a mounting seat between steps for installing a sealing assembly having an axial passage, said device being provided with a transmitter and a receiver-transducer of physical fields, which is arranged at the jet pump side for entry of medium pumped out of the well, the jet pump output side is connected to space around the piping string, the input side of the jet pump passage for supplying the pumped out medium is connected to an inner cavity of the piping string below the sealing assembly, and the input side of the passage for supplying the working medium to the active nozzle is connected to the inner cavity of the piping string above the sealing assembly, and the through passage of the jet pump is made parallel to the axis of the piping string, characterized in that the axis of the active nozzle is parallel to the axis of the through passage and being located from the latter's axis at a distance equal to at least 1.1 radii of the bigger step of the through passage, the diameter of the bigger step in the through passage, which is located above the mounting seat, is at least 0.5 mm greater than the diameter of the step in the through passage, which is located below the mounting seat; the sealing assembly is arranged on a well-logging cable or on a wire fed through the axial passage and replaceable by functional inserts, including at least one of a hydrostatic testing insert, a depression insert, a blocking insert, an insert for recording stratum pressure restoration curves and an insert for hydrodynamic impact on the stratum; the diameter of the axial passage in the sealing assembly is not greater than 0.6 outer diameter of the sealing assembly; the axes of the sealing assembly and the functional inserts are aligned with the axis of the through passage in the jet pump; the functional inserts are adapted for installation thereon autonomous well instruments and sampling devices and are made with a tool for delivery and removal of the same from the jet pump with the use of cable equipment, the sealing assembly being installed moveably along the well-logging cable or a wire above a cap on which a transmitter and receiver-transducer of physical fields are arranged, the latter being connected to the well-logging cable cap replaceable by other well instruments, including at least one of a perforator, an ultrasonic transmitter, a sampling device, a thermometer, a pressure gauge, which all may be connected, either in turns or jointly, to the well-logging cable or a wire.