Patents by Inventor Joyce H. Zhang

Joyce H. Zhang 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).

  • Oil-based insulating packer fluid
    Patent number: 8236736
    Abstract: A packer or annular fluid includes a hydrocarbon fluid; and a gelling agent; wherein the packer fluid is a yield power law fluid. A method for preparing a packer fluid includes preparing a mixture of a hydrocarbon fluid, and a gelling agent; heating the mixture to a selected temperature; and shearing the mixture. A method for emplacing a packer fluid into an annulus includes preparing the packer fluid that includes a hydrocarbon fluid and a gelling agent, wherein the packer fluid is a yield power law fluid; and pumping the packer fluid into the annulus.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: August 7, 2012
    Assignee: M-I L.L.C.
    Inventors: Larry H. Leggett, Charles Svoboda, Morris Arvie, Jr., Robert L. Horton, Joyce H. Zhang
  • OIL-BASED INSULATING PACKER FLUID
    Publication number: 20110065613
    Abstract: A packer or annular fluid includes a hydrocarbon fluid; and a gelling agent; wherein the packer fluid is a yield power law fluid. A method for preparing a packer fluid includes preparing a mixture of a hydrocarbon fluid, and a gelling agent; heating the mixture to a selected temperature; and shearing the mixture. A method for emplacing a packer fluid into an annulus includes preparing the packer fluid that includes a hydrocarbon fluid and a gelling agent, wherein the packer fluid is a yield power law fluid; and pumping the packer fluid into the annulus.
    Type: Application
    Filed: November 24, 2010
    Publication date: March 17, 2011
    Applicant: M-I L.L.C.
    Inventors: Larry H. Leggett, Charles Svoboda, Morris Arvie, JR., Robert L. Horton, Joyce H. Zhang
  • Oil-based insulating packer fluid
    Patent number: 7863223
    Abstract: A packer or annular fluid includes a hydrocarbon fluid; and a gelling agent; wherein the packer fluid is a yield power law fluid. A method for preparing a packer fluid includes preparing a mixture of a hydrocarbon fluid, and a gelling agent; heating the mixture to a selected temperature; and shearing the mixture. A method for emplacing a packer fluid into an annulus includes preparing the packer fluid that includes a hydrocarbon fluid and a gelling agent, wherein the packer fluid is a yield power law fluid; and pumping the packer fluid into the annulus.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: January 4, 2011
    Assignee: M-I L.L.C.
    Inventors: Larry H. Leggett, Charles Svoboda, Morris Arvie, Jr., Robert L. Horton, Joyce H. Zhang