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    A typical deep water multiplex BOP stack with TV cameras can be controlled through a 16 conductor, 1.4-inch OD. armoured cable. Earlier standard E/H control systems required a 2.5 in OD. cable with in excess of 100 conductors to control a similar BOP stack.

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    1. In a system for controlling a subsea blowout preventer in which blowout preventer functions are operated by a hydraulic control system, the improved control system comprising: (a) a subsea pressure compensated reservoir for replenishing the supply of hydraulic fluid, (b) a primary motor, supplied with electrical command energy from the surface, to operate a hydraulic pump which operates in

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  • Introduction Blowout preventer stack equipment

    BOP stack, ram preventers are loed between the annular BOP and the wellhead. (See schematic of a typical subsea BOP stack in Figure WC-3.) The nuer of ram preventers in a BOP stack ranges from one to eight depending on appli-ion and water

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    26/11/2002· FIG. 1 is a schematic view of a mobile offshore drilling unit (MODU) in communiion with a subsea BOP system. FIG. 2 is a cross-sectional view of an uilical having both hydraulic hoses and dedied electrical wires.

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    7 The capital letters in the following designations refer to the WU BOP dimensional views and dimensions tables on pages 8 and 9. A-1 Length: Bonnets closed, locking screws locked A-2 Length: Bonnets opened, locking screws unlocked A-3 Length: Bonnets closed with wedgelocks

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    20/4/2017· In another eodiment, a 7 1/16 inch BOP has the cutting capability of an 11″ BOP thereby saving the cost by allowing use of a 7 1/16 BOP instead of an 11″ BOP. In this case, BOP 98 or 98 A may be a 7 1/16″ BOP with booster piston assely 100 or 100 A having the same operating and booster piston diameters.

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    Subsea accumulators would provide immediatesource highpressure power fluid which could actuate BOP stack components faster than surface accumulators alone supplying power fluid through several thousand feet conduit.However, acousticcontrol system

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