suitable for mixing transfer of oil, water, gas and sand in the oil field or any other applications. It can effectively lower the back pressure in the oil well,enhance pumping efficiency in the deep well, reduce leakage rate, enhance the oilfield output, help recycle natural gas, replace transit exchange, greatly reduce investment over oilfields and thus acquire extremely high economical and social efficiency. Features: 1. Wide range of gas-liquid ratio covering from 0 to 100%, the time for gas transfer can last several hours on end; 2.High efficiency, reliable operation, a long life expectancy. 3. Good adaptability of media; can transfer various viscous media like air, water, crude oil, and high viscous crude oil, or solid particles; can be well adapted to mixing transfer of various media from low to high viscosity.