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Emergency disconnect isolation valve

  • US 10,519,744 B2
  • Filed: 10/12/2016
  • Issued: 12/31/2019
  • Est. Priority Date: 10/12/2015
  • Status: Active Grant
First Claim
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1. A system for disconnection in a drilling operation, comprising:

  • a body having an interior volume and an outer surface, the body having a seal positioned in the interior volume and a valve positioned in the seal, the valve is rotatable between an open position and a closed position, the body having an actuator disposed on the outer surface of the body, and the actuator is interconnected the valve;

    a shear sub at least partially covering the outer surface of the body, the shear sub having a slot and the actuator of the body is positionable in the slot; and

    a shearing mechanism selectively interconnects the shear sub to the body and selectively disconnects the shear sub from the body when the shear sub is subjected to a predetermined shear force, wherein when the shear sub selectively disconnects from the body, the shear sub rotates the actuator as the actuator is removed from the slot of the shear sub to rotate the valve from the open position to the closed position.

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