Patents by Inventor Shane P. D'Arcy

Shane P. D'Arcy 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).

  • Pump down cement retaining device
    Patent number: 7861781
    Abstract: A wall casing cement plug assembly includes a receptacle with an axial passage. The receptacle is pumped to a lower end of the casing string and locked in place. The receptacle has a casing seal that engages the string of casing and a retainer mechanism on its exterior that engages a profile in the string of casing. Cement is pumped through the receptacle by rupturing a blocking device in the axial passage of the receptacle. A wiper plug is pumped down the string casing. The wiper plug has a prong on its lower end that stabs into the axial passage of the receptacle. A latch located in the lower portion of the receptacle locks the wiper plug to the body.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: January 4, 2011
    Assignee: Tesco Corporation
    Inventor: Shane P. D'Arcy
  • Pump Down Cement Retaining Device
    Publication number: 20100147517
    Abstract: A wall casing cement plug assembly includes a receptacle with an axial passage. The receptacle is pumped to a lower end of the casing string and locked in place. The receptacle has a casing seal that engages the string of casing and a retainer mechanism on its exterior that engages a profile in the string of casing. Cement is pumped through the receptacle by rupturing a blocking device in the axial passage of the receptacle. A wiper plug is pumped down the string casing. The wiper plug has a prong on its lower end that stabs into the axial passage of the receptacle. A latch located in the lower portion of the receptacle locks the wiper plug to the body.
    Type: Application
    Filed: December 11, 2008
    Publication date: June 17, 2010
    Applicant: Tesco Corporation
    Inventor: Shane P. D'Arcy