Patents Assigned to Directional Wireline Service, Inc.
  • Patent number: 5295544
    Abstract: An explosive charge carrier is provided which is lowered into a well pipe casing. The carrier includes wear plates that slide along the inner diameter of the pipe and which are biased against the inner wall of the well pipe casing. A string of explosive charges having a density of up to six charges per foot are mounted between disks of the carrier which are separated by 12 inches. Spaced about the periphery of the separated disks are a maximum density of six strings of charges separated by 60.degree. for 36 explosive charges. Alternately, four strings of charges may be spaced about the periphery of the separated disks at a spacing of 90.degree. for 16 explosive charges.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: March 22, 1994
    Assignee: Directional Wireline Services, Inc.
    Inventor: Donald V. Umphries
  • Patent number: 5111885
    Abstract: An explosive charge carrier is provided which is lowered into a well pipe casing. The carrier includes wear plates that slide along the inner diameter of the pipe and which are biased against the inner wall of the well pipe casing. A string of explosive charges having a density of up to six charges per foot are mounted between disks of the carrier which are separated by 12 inches. Spaced about the periphery of the separated disks are a maximum density of six strings of charges separated by 60.degree. for 36 explosive charges. Alternately, four strings of charges may be spaced about the periphery of the separated disks at a spacing of 90.degree. for 16 explosive charges.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: May 12, 1992
    Assignee: Directional Wireline Service, Inc.
    Inventor: Donald V. Umphries