DEVICE FOR PRODUCTION OF HIGH-VISCOUS OIL

摘要

The invention is directed to extraction of high-viscous oil by means of sucker-rod pumps. The pump with receiving valve is placed higher than packer. Between the plunger and inlet of the pump spring-supported bushing is installed, this interacts with it through rod. In the lower position of the plunger bushing opens side channels in the walls of the pump. At the beginning of the plunger lift through those channels from inter-pipe space suction of working medium takes place, this decreases viscosity of oil. The invention promotes qualitative mixing of oil with working medium and reliable operation of well pump.