BZYB series multiphase gas pump/oil pump is the patented product developed by our company, applying nationally patented "swing rotary machine" (patent no.: zl93104005.1), suitable for mixing transfer of oil, water, gas 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.