METHOD OF LIQUID MINERAL RECOVERY Russian patent published in 2003 - IPC

FIELD: oil, gas and water producing industries used in their recovery by pumps. SUBSTANCE: method includes use of two pumps. One pump is installed on surface, while the other, jet pump is installed in well at rated depth. Pumps are connected by two pipes according to circular system. Packer is installed in region of jet pump. Suction hollow of pump installed on surface is connected to pipe through which recovered mineral is transported from jet pump to surface. Pressure hollow of pump located on surface is connected to transport pipe through which liquid mineral is supplied to user. Installed on said pipe is vessel to which pipe is connected which supplies fluid to jet pump. Cross-section of said pipe is selected equal or exceeding the cross-section of transport pipe. Operation of jet pump is actuated by pressure of fluid on surface in vessel of transport pipe. Transported through pipes connected into circular system is constant volume of fluid. Whole inflow from formation is directed to transport pipe. Productivity is regulated by varying internal cross-section of transport pipe by gate up to stable operation of pumps without pressure pulsation. EFFECT: reduced hydraulic losses. 2 dwg