Chevron U.s.a. Inc.

Omid Oujani

Thomas Edward O'Donnell

Robert B Carpenter

Baha Tulu Tanju

Krystian K Maskos

Hailing An

Evan P Graybill

George Siappas

Thomas B Heyward

John Lofton

Timothy Achee

Raymond Stawaisz

Trevor Munk

Chukwuemeka U Emecheta

John Rodney Hensley

Zachary P Schneider

In subsea drilling operations, workover control systems may include deployment of an umbilical from a deepwater drilling vessel. Such an umbilical provides support functions for deepwater drilling operations. In the practice of the invention, a new method, system and apparatus may be employed to deploy the umbilical independently of the drilling riser, which provides commercial and operational advantages. That is, the umbilical may be deployed at a different time than the riser is deployed, and also without intimate close connection from the umbilical to the riser.

Method, system and apparatus for deployment of umbilicals in subsea well operations

An apparatus and method for providing a controllable supply of fluid, and optionally power and/or communication signals, to a subsea equipment are provided. The fluid may be a water-based fluid, oil-based fluid, or chemicals. The apparatus includes a reservoir disposed on a seabed for storing a supply of fluid for delivery to the subsea well equipment. A subsea pumping device is configured to receive the fluid from the reservoir, pressurize the fluid, and deliver the pressurized fluid to an accumulator of a hydraulic power unit disposed on the seabed. The hydraulic power unit can store the pressurized fluid and control an output of the pressurized fluid to the subsea well equipment, thereby providing a subsea fluid source for the subsea equipment.

Apparatus and method for providing a controllable supply of fluid to subsea well equipment

Pressure within a subsea well is managed as temperature within the well fluctuate. The management of the pressure mitigates stress to the structure of the well caused by the pressure. To manage the pressure, fluid is received from and/or provided to the well to reduce and/or increase pressure within the well.

System and method for regulating pressure within a well annulus

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Houston, TX, United States of America

Omid Oujani