Patents Represented by Attorney Victora H. Segura
  • Patent number: 7814979
    Abstract: Methods and apparatuses for severing a wellbore tubular, the apparatus, in certain aspects, including: a first member movable toward a tubular to be severed; a second member with a second blade disposed opposite to the first member and movable toward the tubular; a first blade on the first member having a projection projecting from a center of a blade body with point structure on the projection for puncturing the tubular and cutting surfaces on the projection for cutting the tubular; and cutting surfaces, as needed, on the blade body adjacent the projection for cutting the tubular.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: October 19, 2010
    Assignee: National Oilwell Varoo, L.P.
    Inventors: Frank Benjamin Springett, James D. Brugman