DEVICE FOR PRODUCT LIFTING AT THERMAL INFLUENCE ON FORMATION

摘要

FIELD: oil and gas industry.SUBSTANCE: device for oil lifting at thermal influence on a formation includes a displacement chamber, pipe strings for passage of liquid to be lifted and supply of working agent, a receiving valve interconnected with borehole space and a delivery valve interconnected with the pipe string for passage of liquid to be lifted. The displacement chamber is equipped with an additional valve interconnected with borehole space and having the possibility of being opened at the pressure exceeding the pressure of the delivery valve opening.EFFECT: invention allows improving use efficiency of wells and equipment at development of deposits of high-viscosity oil and natural bitumens with thermal methods and enhancing operating safety.1 dwg