Patents Represented by Attorney C. P. Wain

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  • Abandonment of sub-sea wells
    Patent number: 5372198
    Abstract: A cased suspended sub-sea well is secured for abandonment by setting a packer in the casing thereof, the packer having a perforating gun suspended therefrom firing the gun to perforate the casing and then injecting cement into the annulus behind the casing.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: December 13, 1994
    Assignee: Halliburton Company
    Inventors: John C. North, David O. Nelson, Colin S. Headworth