Patents by Inventor Raymond A. Stawaisz

Raymond A. Stawaisz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method, system and apparatus for deployment of umbilicals in subsea well operations
    Patent number: 9097066
    Abstract: 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.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: August 4, 2015
    Assignee: Chevron U.S.A. Inc.
    Inventors: John Rodney Hensley, Zachary P. Schneider, Evan P. Graybill, Thomas E. O'Donnell, Timothy Achee, Raymond Stawaisz, Trevor Munk, Omid Oujani, Thomas B. Heyward
  • Subsea Intervention Plug Pulling Device
    Publication number: 20150136406
    Abstract: A plug pulling device includes an elongated housing comprising a production tree connection interface, a shifting tool disposed within and along a substantial length the housing and comprising a distal end configured to couple to a tubing plug, and a seal disposed within the housing and formed around a portion of the shifting tool. The seal isolates a first portion of the housing from a second portion of the housing. The second portion of the housing is adjacent to the production tree connection interface. The shifting tool is configured to move partially in and out of the first portion of the housing when there is a pressure differential between the first portion of the housing and an environment external to the first portion of the housing.
    Type: Application
    Filed: November 18, 2013
    Publication date: May 21, 2015
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Mauricio Baez, Raymond A. Stawaisz, John Lloyd Busby, Brian Saucier, Stephen Gregory Pierce, Walter Warren Weaver
  • Method, System and Apparatus for Deployment of Umbilicals in Subsea Well Operations
    Publication number: 20120152556
    Abstract: 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.
    Type: Application
    Filed: December 13, 2011
    Publication date: June 21, 2012
    Applicant: Chevron U.S.A. Inc.
    Inventors: John Rodney Hensley, Zachary P. Schneider, Evan P. Graybill, Thomas E. O'Donnell, Timothy Achee, Raymond Stawaisz, Trevor Munk, Omid Oujani, Thomas B. Heyward