Patents by Inventor Alfredo Olvera

Alfredo Olvera 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).

  • Patent number: 8622121
    Abstract: A reinforced wellhead member for use during fracing operations. The wellhead member is preloaded at a flange section by creating compressive stresses via a ring that interacts with a tightening nut on a bolt. The bolt is rigidly attached to an adapter which may also be modified to create stresses on the flange of the wellhead member. The induced stresses counter the tensile stresses experienced by the flange during fracing operations, allowing a standard wellhead member to be utilized.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: January 7, 2014
    Assignee: Vetco Gray Inc.
    Inventors: Mahesha Udipi, Alfredo Olvera, Jim Hwang, Jean Brunjes, Eugene A. Borak, Jr.
  • Patent number: 8327943
    Abstract: An isolation sleeve extends from an adapter into the bore of a tubing head to isolate high pressure frac fluid from the body of the tubing head. The isolation sleeve may be installed by a running tool that can screw the sleeve onto a packoff bushing located within the tubing head. The running tool can also retrieve the isolation sleeve by unscrewing it from the packoff bushing.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: December 11, 2012
    Assignee: Vetco Gray Inc.
    Inventors: Eugene A. Borak, Alfredo Olvera
  • Publication number: 20110108275
    Abstract: An isolation sleeve extends from an adapter into the bore of a tubing head to isolate high pressure frac fluid from the body of the tubing head. The isolation sleeve may be installed by a running tool that can screw the sleeve onto a packoff bushing located within the tubing head. The running tool can also retrieve the isolation sleeve by unscrewing it from the packoff bushing.
    Type: Application
    Filed: November 12, 2009
    Publication date: May 12, 2011
    Applicant: Vetco Gray Inc.
    Inventors: Eugene A. Borak, Alfredo Olvera