Patents by Inventor Sarah Elizabeth Pelham

Sarah Elizabeth Pelham 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).

  • Well bore treatment fluid
    Patent number: 7533723
    Abstract: A well bore treatment fluid and methods for selectively reducing the outflow of water during recovery of hydrocarbons from a hydrocarbon reservoir in a formation are described, wherein fluid contains 5 to 40 weight per cent of a dissolved compound based on ?-branched carboxylic acid, derivatives or co-polymers thereof, and capable of forming a precipitate that is substantially soluble in hydrocarbons and substantially insoluble in water.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: May 19, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Trevor Lloyd Hughes, Timothy Gareth John Jones, Loic Regnault de la Mothe, Robert Seth Hartshorne, Sarah Elizabeth Pelham
  • Flow meter for multi-phase mixtures
    Patent number: 6776054
    Abstract: A method and apparatus is disclosed for determining the flow rates of fluid phases in a pipe containing multiple fluid phases. A Venturi is provided to measure total volumetric flow rate measurement and a holdup measurement is taken approximately 3-10 pipe diameters downstream of the Venturi. The holdup measurement is made at a downstream location where a substantial amount of mixing occurs and the differences between the velocities of the fluid phases can effectively be ignored. The flow rates of the phases can thus be determined directly from the holdup measurements.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: August 17, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Kenneth Edward Stephenson, John William James Ferguson, John Barry Fitzgerald, Anthony Robert Holmes Goodwin, Gerald Henry Meeten, Sarah Elizabeth Pelham