Downhole Separation Efficiency Technology to Produce Wells Through a Dual Completion

A system for producing hydrocarbons from a subterranean well, the system comprising:

• a fluid production tubular extending into the well and through a packer that fluidly seals across a casing of the well;
• a gas production tubular extending into the well and through the packer;
• an electrical submersible pump in fluid communication with the fluid production tubular;
• a cyclone separator within the well, the cyclone separator having:
• a rotating screw with thread surfaces open to an inner diameter surface of the casing, the rotating screw positioned adjacent to perforations through the casing, the thread surfaces angled to direct a liquid stream radially outward towards the inner diameter surface of the casing and to direct a gas stream radially inward relative to the liquid stream;
• and
• a central passage extending axially through the rotating screw and oriented to direct the gas stream towards a lower end of the gas production tubular.

A method for producing hydrocarbons from a subterranean well, the method comprising:

• extending a fluid production tubular into the well;
• extending a gas production tubular into the well, the gas production tubular being separate from the fluid production tubular;
• providing an electrical submersible pump in fluid communication with the fluid production tubular;
• providing a cyclone separator within the well, the cyclone separator having:
• a rotating screw with thread surfaces open to an inner diameter surface of the well, the rotating screw being positioned between a lower end of the gas production tubular and the electrical submersible pump;
• and
• a central passage extending through the rotating screw;
• and
• operating the cyclone separator so that the thread surfaces direct a liquid stream axially downward and radially outward towards the inner diameter surface of the well and the central passage directs a gas stream towards the lower end of the gas production tubular.