초록 ▼

A method for downhole separation of oil and water within a production fluid downhole in an oil well, includes providing a cyclone separator connected to the outlet of a downhole pump or two or more cyclone separators mounted within a housing and connected to the outlet of a downhole pump. One outlet

A method for downhole separation of oil and water within a production fluid downhole in an oil well, includes providing a cyclone separator connected to the outlet of a downhole pump or two or more cyclone separators mounted within a housing and connected to the outlet of a downhole pump. One outlet of the separator or housing is connected to a conduit for transporting the lower density stream to the surface and the second outlet of the separator or housing is connected to a conduit for transporting the higher density stream to an underground formation. The pre-separator downhole pump is preferably selected to maintain dissolved gases in solution while production fluids are within the pump and separators and prevent gas breakout from occurring.

대표청구항 ▼

[ The embodiments of the invention in which an exclusive property or privilege is claimed are as follows:] [1.] A method for reducing the amount of water in an oil-and-water stream to be produced from an oil well wherein the stream includes dissolved gas, comprising the steps of:(a) providing a cycl

[ The embodiments of the invention in which an exclusive property or privilege is claimed are as follows:] [1.] A method for reducing the amount of water in an oil-and-water stream to be produced from an oil well wherein the stream includes dissolved gas, comprising the steps of:(a) providing a cyclone separator device sized to fit within the well bore for separating the oil-and-water stream into a higher density stream and a lower density stream, the separator device having an inlet, a first outlet for the lower density stream and a second outlet for the higher density stream;(b) providing a first pump for pumping fluids into the inlet of the separator device;(c) connecting the first outlet of the separator device to a lower density fluid conduit for producing the lower density stream;(d) connecting the second separator device outlet to a higher density fluid conduit for conducting the higher density stream to an underground formation;(e) placing the separator device, the first pump and the lower density fluid conduit and the higher density fluid conduit in the well; and(f) activating the pump so as to move the fluids through the separator device and into the lower density and higher density fluid conduits without allowing gas breakout to occur.