Patent ID: 8607879
Filing Date: 2013-12-17
Classification: E21B,Y10T

Abstract:
1. A reconfigurable subsea blowout preventer (BOP) stack, comprising: a. a modular retrievable element control system adapted for use with at least one of (i) a subsea production tree, (ii) a production riser, or (iii) a subsea manifold control interface, the modular retrievable element control system further comprising an active function controller; and b. a docking station dimensioned and configured to accept the modular retrievable element control system; c. an interface to a subsea structure operatively connected to the modular retrievable element control system; and d. a riser connector connected to the modular retrievable element control system, the riser connector comprising a BOP stack connector mandrel and adapted to interface with a marine riser, the riser connector further comprising a multi-bore connector, the riser connector configured to absorb loading, separating forces, and bending moments within its body where substantial section modulus exists.