Patents by Inventor Bruce (Boris) P. Cherewyk

Bruce (Boris) P. Cherewyk 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).

  • Tapered sleeve and fracturing head system for protecting a conveyance string
    Patent number: 8122949
    Abstract: A tapered sleeve and fracturing head system for introducing fracturing fluid to a wellbore, while protecting a conveyance string from the erosive effects of the fracturing fluid is disclosed. A tapered sleeve has a top portion and a tapered downhole portion. The sleeve is fit to a main bore of a fracturing head by an upset at the top portion of the sleeve that engages a shoulder of the fracturing head. The sleeve intercepts, deflects and redirects introduced fracturing fluids downhole, preventing direct impingement of the fracturing fluid against the conveyance string. The main bore of the fracturing head may also be tapered at an angle substantial parallel to and along the length of the taper of the sleeve, to further improve the fluid dynamics of the fracturing fluid and further reduce the erosive effects of the fracturing fluid.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: February 28, 2012
    Assignee: Isolation Equipment Services Inc.
    Inventor: Bruce (Boris) P. Cherewyk