Patents by Inventor Gabriel D. Hernandez

Gabriel D. Hernandez 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).

  • Blowout preventer for use in combination with a deep well pump
    Patent number: 4637458
    Abstract: A blowout preventer for use in combination with a deep well pump during steam injection, comprises a hollow cylindrical nipple having a top and bottom surface and a through cylindrical bore of diameter D.sub.1. A cylindrical mandrel is partially received in the cylindrical bore provided in the nipple. The cylindrical mandrel has a first diameter portion of diameter D.sub.2, a second diameter portion of diameter D.sub.3 and a third diameter portion of diameter D.sub.4 wherein D.sub.2 >D.sub.1 >D.sub.3 >D.sub.4 such that the first diameter portion abuts the bottom surface of the nipple upon an excess in well head pressure so as to prohibit blowout. An elastically deformable seal is carried on the third diameter portion of the mandrel for sealing the mandrel within the cylindrical bore of the hollow cylindrical nipple, in order to prevent steam leakage during the steam injection process.
    Type: Grant
    Filed: January 10, 1986
    Date of Patent: January 20, 1987
    Assignee: Maraven, S.A.
    Inventor: Gabriel D. Hernandez