Patents Assigned to COTEC, Inc.
  • Vertical oil storage system and its method for deepwater drilling and production
    Patent number: 9327805
    Abstract: A vertical oil storage system is disclosed, having an oil tank for storing oil and water, an oil caisson coupled to the top of the oil tank, a water caisson coupled to the bottom of the oil tank, and a containment saucer at the interface between the oil and the water stored in the oil tank. Additionally, there is a water pipe extending from an upper water sump in the center well to the water caisson, a water passageway extending from the center well to the water caisson, and an oil pipe extending from the topside facility to the oil caisson.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: May 3, 2016
    Assignees: China National Offshore Oil Corporation, COTEC, Inc.
    Inventors: Jin Wang, Yong Luo