Cameron International Corporation

Shell Oil Comapny

Johannes Van Wijk

Melvyn F Whitby

Edward C Gaude

David J McWhorter

Brian Matteucci

An apparatus for controlling hydraulically actuatable components of a blowout preventer stack assembly and a system for same. The apparatus comprises a blowout preventer stack including hydraulically actuatable components and a lower marine riser package coupled to the blowout preventer stack and including additional hydraulic components. The lower marine riser package includes a solenoid valve configured to control at least some of the components. The solenoid valve receives hydraulic fluid from a dedicated accumulator or accumulator bank configured to supply hydraulic fluid exclusively for use with the solenoid valve. A closed-loop hydraulic circuit is formed between the accumulator or accumulator bank and the solenoid valve.

Closed-loop solenoid system

A ram blowout preventer ('BOP') may be used for sealing about an object positioned in a vertical bore extending through the BOP. The ram BOP includes a body comprising a vertical bore extending through the body and a ram cavity intersecting the bore, a ram assembly movable laterally into and out of the BOP vertical bore and comprising a ram body, and an opposing ram assembly movable laterally into and out of the BOP vertical bore and comprising a ram body and a seal body coupled to the ram body, wherein the seal body comprises a seal configured to seal the entirety of the BOP vertical bore. The seal can be located on the upper and/or lower portion of the seal body to provide for bi-directional sealing across the BOP.

Blowout preventer including blind seal assembly

A system for reducing pressure in a subsea operator. In one embodiment, a subsea system includes an operator and a deintensifier. The operator includes a housing and a piston. The piston is movably disposed within the operator housing and divides an inner volume of the operator housing into a closing chamber and a second chamber. The deintensifier is fluidically coupled to the operator. The deintensifier includes a housing and a piston. The piston includes a closing surface and an opening surface. The closing surface is fluidically coupled to the second chamber of the operator housing. The opening surface is fluidically coupled to ambient pressure. The area of the closing surface is greater than an area of the opening surface so as to increase the pressure differential between the closing chamber and the second chamber and assist in moving the operator piston to the closed position.

Subsea pressure reduction system

The present disclosure generally relates to a system for injecting a fluid into a subsea hydrocarbon extraction component. The system comprises a pressure variance device including an ambient chamber and a variance chamber, the ambient chamber exposed to an external subsea environment and configured to transfer the pressure to the variance chamber via a pressure variance device piston. The system further comprises an accumulator including a fluid delivery chamber and a pressure chamber, the pressure chamber configured to receive the pressure from the variance chamber and transfer the pressure to the fluid delivery chamber via an accumulator piston. The system also comprises a control system configured to regulate injection of the fluid from the fluid delivery chamber into the hydrocarbon extraction component. In this way, the system can intensify or deintensify a hydrostatic pressure in the subsea environment to inject chemicals in the hydrocarbon extraction component at a desired pressure.

Pressure variance systems for subsea fluid injection

The present disclosure generally relates to a system and method for installing a tubular element, such as a suction pile, in a bottom of a body of water. The system comprises a tubular element and a deintensifier in fluid communication with the tubular element. The deintensifier is configured to be exposed to an ambient pressure external to the tubular element and reduce pressure within the tubular element. The method comprises lowering the tubular element to the bottom of the body of water, filling the tubular element with water at ambient pressure, and exposing the water within the tubular element to a deintensified external ambient pressure so as to withdraw the water out of the tubular element.

System and method for installing suction piles

A fluid control system may be included within a blowout preventer subsea control pod of a subsea drilling system. The fluid control system includes a primary fluid flow path including an inlet and an outlet, the inlet connectable to a fluid supply source, the outlet connectable to a component controllable by the fluid supply source, a surge relief valve connected within the primary fluid flow path between the inlet and the outlet, and a control valve connected within the primary fluid flow path between the surge relief valve and the outlet such that hydraulic pressure surges received within the primary fluid flow path are dampened, at least partially, by the surge relief valve before received by the control valve.

Assembly and system including a surge relief valve

The invention discloses a system and method for controlling a wellbore. The method comprises the steps of: providing a capping stack comprising a number of releasable modules, each module having a size and weight within predetermined limits, wherein said modules include at least one ram type blow out preventer module, and wherein said modules include a connector module for connecting the capping stack to an attachment point of the wellbore; transporting said modules by cargo airplane to a location near the wellbore; interconnecting the modules to provide the capping stack; and connecting the capping stack to the attachment point of the wellbore.

Capping stack and method for controlling a wellbore

A drilling assembly for drilling a borehole into geological formations. The assembly comprises a drilling shaft and a pump device, both placable in the borehole. The drilling shaft comprises a drilling head, and the pump device comprises a sealing device for sealing a first borehole part below the sealing device from a second borehole part above the sealing device. The pump device is enabled to pump a fluid from the first borehole part to the second borehole part.

Drilling assembly and method for drilling a barehole into geological formations

The invention relates to a drilling assembly for drilling a borehole into geological formations which assembly comprises:

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GS Rijswijk, Netherlands

Johannes Van Wijk