Dual closure system for well system

摘要

Certain aspects and embodiments of the present invention are directed to a dual closure system disposed within a wellbore and capable of preventing the production of fluids from a fluid-producing formation to the surface. The dual closure system can include a passive closure mechanism and a subsurface safety valve coupled to an electric submersible pump positioned within a passageway defined by the tubing string. The passive closure mechanism and the subsurface safety valve can prevent production of fluid in the absence of the subsurface safety valve. The subsurface safety valve can be positioned within a passageway defined by a tubing string such that the subsurface safety valve can apply force to the passive closure mechanism. The force applied to the passive closure mechanism can maintain the passive closure mechanism in an open position, allowing movement of fluid to the surface in the presence of the active closure mechanism.

主权项

1. A dual closure system configured for being disposed in a wellbore through a fluid-producing formation, the dual closure system comprising:
a subsurface safety valve comprising a body having an active closure mechanism configured to be positioned in a passageway defined by a tubing string, the subsurface safety valve being coupleable to a control line; and a passive closure mechanism coupleable to the tubing string such that the passive closure mechanism is physically separated from the control line by the body of the subsurface safety valve, wherein the passive closure mechanism is configured to be in a closed position that prevents a flow of fluid to a portion of the passageway that is closer to a surface of the wellbore than the passive closure mechanism in the absence of the subsurface safety valve in the tubing string, and wherein the subsurface safety valve is configured to be positioned in the passageway of the tubing string such that the subsurface safety valve causes the passive closure mechanism to be in an open position that allows the flow of fluid to a second portion of the passageway that is closer to the surface of the wellbore than the passive closure mechanism.