Patents by Inventor Euan Docherty

Euan Docherty 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).

  • Multilateral expandable seal
    Patent number: 8408315
    Abstract: A system for sealingly engaging multiple downhole tubulars includes a first downhole tubular, a guide assembly and a swellable seal. The first downhole tubular includes an end for receiving a second downhole tubular. The guide assembly is disposed on an end of the second tubular. A swellable seal is disposed on an outer surface of the guide assembly. After the first tubular receives a second tubular, the swellable seal is activated to form an expanded circumferential seal between the first tubular and the second tubular.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: April 2, 2013
    Assignee: Smith International, Inc.
    Inventor: Euan Docherty
  • MULTILATERAL EXPANDABLE SEAL
    Publication number: 20100147537
    Abstract: A system for sealingly engaging multiple downhole tubulars that includes a first downhole tubular comprising an end for receiving a second downhole tubular; a guide assembly disposed on an end of the second tubular; and a swellable seal disposed on an outer surface of the guide assembly, wherein after the first tubular receives the second tubular, the swellable seal is activated to form an expanded circumferential seal between the first tubular and the second tubular is disclosed.
    Type: Application
    Filed: December 3, 2009
    Publication date: June 17, 2010
    Applicant: SMITH INTERNATIONAL, INC.
    Inventor: Euan Docherty