METHOD OF OIL LIFTING OR THERMAL FORMATION TREATMENT AND DEVICE FOR ITS IMPLEMENTATION

摘要

FIELD: oil and gas industry.SUBSTANCE: method includes pumping of working agent at high temperature and in vapour state through respective tubing to working chamber with cyclic product lifting through respective tubing and main injection valve to the ground level and extraction of product to working chamber through injection valve from downhole space with periodical injection of working agent through downhole space to formation with shutting off cyclic product uplifting and its extraction to working chamber. Injection of working agent is made to stratum with closing of tubing at the wellhead for lifted fluid passing through displacement chamber and auxiliary injection valve set to a bigger opening pressure than opening pressure of the main injection valve. Cyclic lifting of product from the stratum and its extraction to working chamber are made at continuous delivery of working agent to working chamber through choke that provides non-linear change and consumption limitation of working agent delivered to condensation chamber at hydraulic relay opening to ensure pressure drop in the chamber up to bottomhole pressure and receipt of product from the stratum through suction valve to the chamber.EFFECT: increasing efficiency of wells and equipment use during development of deposits of oil and natural bitumen with high viscosity by thermal treatment methods.2 cl, 1 dwg