Open water coiled tubing sealing device

A method for controlling hydrostatic pressure and fluid container pressures in a system that comprises a subsea fluid source which utilizes a riserless open water coiled tubing system and an open water coiled tubing sealer to control hydrostatic pressure and fluid container pressures comprising an upper well control assembly having a first geometric orientation about a first longitudinal axis relative to fluid flow through a center of the upper well control assembly and comprising an upper well control assist assembly comprising a first stripper and a first packer;

• a lower well control assembly in fluid communication with the upper well control assembly and comprising a lower well control assist assembly arranged in a second geometric orientation substantially inverted with respect to the first orientation about a second longitudinal axis defined through a center of the lower well control assembly and substantially extending from the first longitudinal axis, the lower well control assembly comprising a second stripper and a second packer, the lower well control assembly fluidly coupled to the upper well control assembly;
• a quick disconnect connector in fluid communication with the upper well control assembly;
• an electrically powered subsea assist jack operatively connected to the quick disconnect connector and comprising an electric motor, a power connector operatively in communication with the electric motor, and a power convertor operatively in communication with the electric motor;
• a controller operatively in communication with the electrically powered subsea assist jack;
• and a power connector operatively in communication with a source of electrical power, the controller, and the electrically powered subsea assist jack;
• the method comprising:
• a. operatively connecting the first and second strippers to a subsea fluid source in an inverted relationship to each other along an axis defined by a fluid flow conduit;
• b. using an electrically powered subsea assist jack to move coiled tubing with respect to an interior portion of a wellbore by having the electrically powered subsea assist jack maneuver the coiled tubing into and out from the wellbore;
• and
• c. using an operation of the first and second strippers and the first and second packers as arranged to dynamically contain hydrostatic and wellbore pressure around the coiled tubing while the subsea assist jack is moving the coiled tubing with respect to the wellbore.