Patents by Inventor Wendy Kneissl

Wendy Kneissl 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).

  • Method of determining properties relating to an underbalanced well
    Patent number: 7222022
    Abstract: There is a method of determining properties relating to an underbalanced well, comprising inducing pressure variations in a fluid within a well, measuring the pressure variations, and calculating pore pressure of at least one fluid-producing formation. The pressure variations cause a change in flow rate from formations along a length of borehole, and as such a change in the production flow rate of the well. The variations in pressure are used to calculate the pore pressure. Variations in annular bottomhole pressure are induced by altering the flow rate of drilling fluid, or the density of drilling fluid or by acoustic pulsing downhole. The pore pressure, permeability and porosity of the formations is derived as a real time profile along the length of the borehole.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: May 22, 2007
    Assignee: Schlumberger Technology Corporation
    Inventors: Wendy Kneissl, Yan Kuhn De Chizelle
  • Method of determining properties relating to an underbalanced well
    Publication number: 20040111216
    Abstract: There is a method of determining properties relating to an underbalanced well, comprising inducing pressure variations in a fluid within a well, measuring the pressure variations, and calculating pore pressure of at least one fluid-producing formation. The pressure variations cause a change in flow rate from formations along a length of borehole, and as such a change in the production flow rate of the well. The variations in pressure are used to calculate the pore pressure. Variations in annular bottomhole pressure are induced by altering the flow rate of drilling fluid, or the density of drilling fluid or by acoustic pulsing downhole. The pore pressure, permeability and porosity of the formations is derived as a real time profile along the length of the borehole.
    Type: Application
    Filed: January 8, 2004
    Publication date: June 10, 2004
    Inventors: Wendy Kneissl, Yan Kuhn De Chizelle