Patents by Inventor Anthony James Ratcliffe

Anthony James Ratcliffe 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).

  • Subsea system and method for protecting equipment of a subsea system
    Patent number: 8161993
    Abstract: A subsea system comprises a wellbore within a reservoir, equipment downstream of the wellbore, and a barrier connected to the equipment. The equipment is rated for a maximum pressure that is less than a maximum reservoir pressure and equal to or greater than the maximum reservoir pressure less external hydrostatic pressure experienced by the equipment. The barrier is rated for a maximum pressure that is equal to or greater than the maximum reservoir pressure.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: April 24, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventor: Anthony James Ratcliffe
  • SUBSEA SYSTEM AND METHOD FOR PROTECTING EQUIPMENT OF A SUBSEA SYSTEM
    Publication number: 20100071775
    Abstract: A subsea system comprises a wellbore within a reservoir, equipment downstream of the wellbore, and a barrier connected to the equipment. The equipment is rated for a maximum pressure that is less than a maximum reservoir pressure and equal to or greater than the maximum reservoir pressure less external hydrostatic pressure experienced by the equipment. The barrier is rated for a maximum pressure that is equal to or greater than the maximum reservoir pressure.
    Type: Application
    Filed: September 23, 2008
    Publication date: March 25, 2010
    Applicant: CHEVRON U.S.A. INC.
    Inventor: ANTHONY JAMES RATCLIFFE