Patents by Inventor Douglas Costall

Douglas Costall 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).

  • Hybrid coiled tubing/fluid pumping unit
    Patent number: 7207389
    Abstract: Method and apparatus for servicing of a bore hole in the earth, comprising a first sub-assembly adapted for the insertion and removal of a continuous length of coiled tubing into and from the bore hole, a second sub-assembly adapted for the vaporization of liquified gas and the pumping of the resulting gas through the coiled tubing into the bore hole and a platform to support both the first and second sub-assemblies thereon.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: April 24, 2007
    Assignee: Leader Energy Services Corp.
    Inventors: Robert Joseph Foster, Douglas Costall
  • Hybrid coiled tubing/fluid pumping unit
    Publication number: 20050082064
    Abstract: Method and apparatus for servicing of a bore hole in the earth, comprising a first sub-assembly adapted for the insertion and removal of a continuous length of coiled tubing into and from the bore hole, a second sub-assembly adapted for the vaporization of liquified gas and the pumping of the resulting gas through the coiled tubing into the bore hole and a platform to support both the first and second sub-assemblies thereon.
    Type: Application
    Filed: March 8, 2004
    Publication date: April 21, 2005
    Applicant: Leader Energy Services Corp.
    Inventors: Robert Foster, Douglas Costall
  • Hybrid coiled tubing/conventional drilling unit
    Patent number: 5842530
    Abstract: There is described an apparatus for the drilling and servicing of bore holes in the earth, comprising a first sub-assembly adapted for the drilling and servicing of bore holes using jointed and coiled tubing, a second sub-assembly adapted for the drilling and servicing of bore holes using a continuous length of coiled tubing, and a platform adapted to support the first and second sub-assemblies thereon.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: December 1, 1998
    Assignee: Canadian Fracmaster Ltd.
    Inventors: Donald A. Smith, Douglas Costall