Patent ID: 7455107

Claim:
A well jet device for logging horizontal wells comprising a ring, arranged on a lower section of a casing string, with a stepped through channel for installing a sealing unit, a smooth tubing string with a jet pump installed thereon, in the body of the said jet pump an active nozzle and a mixing chamber with a diffuser are arranged as well as a channel for supplying an active medium, a channel for supplying a medium pumped out of a well and a stepped through channel are made, the latter channel having install therein either a blocking insert having a through channel and serving for closing the channel for supplying an active medium or a depression insert which, when installed, closes the tubing string in its cross-section, a logging device is arranged on the lower end of the tubing string, a sealing unit is put on the tubing string between the logging device and the jet pump such that the sealing unit is axially movable relative to the tubing string, and the lower section of the tubing string above the logging device is perforated.