Patents by Inventor Iain Cooper

Iain Cooper 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 for determining drilling fluid properties downhole during wellbore drilling
    Patent number: 6659197
    Abstract: Determining the downhole rheological properties of a wellbore fluid. The method includes moving the wellbore fluid through a wellbore tool assembly into a wellbore at a first flow rate. A pressure is measured at a first position proximate a bottom of the wellbore. A pressure is measured at a second position in the wellbore axially separated from the first position. The wellbore fluid is then moved through the wellbore tool assembly at a second flow rate. Measuring pressure at the first and second positions is repeated, and at least one rheological property is determined from the pressure measurements.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: December 9, 2003
    Assignee: Schlumberger Technology Corporation
    Inventor: Iain Cooper
  • Method of kick detection and cuttings bed buildup detection using a drilling tool
    Publication number: 20030057366
    Abstract: A method comprising determining a characteristic of a mud mixture surrounding a drilling tool within an inclined borehole in which a drilling tool is conveyed. The method includes defining a cross-section of the tool which is orthogonal to a longitudinal axis of the tool. A bottom contact point of the cross-section of the tool is determined, which contacts the inclined borehole as the tool rotates in the borehole. The cross-section is separated into at least two segments, where one of the segments is called a bottom segment of the borehole which includes the bottom contact point of the cross-section of the tool with the inclined borehole. The tool is turned in the borehole. Energy is applied into the borehole from an energy source disposed in the tool, as the tool is turning in the borehole.
    Type: Application
    Filed: September 21, 2001
    Publication date: March 27, 2003
    Inventors: Kais Gzara, Iain Cooper
  • Method for determining drilling fluid properties downhole during wellbore drilling
    Publication number: 20030029640
    Abstract: A method is disclosed for determining the downhole rheological properties of a wellbore fluid. The method includes moving the wellbore fluid through a wellbore tool assembly into a wellbore at a first flow rate. A pressure is measured at a first position proximate a bottom of the wellbore. A pressure is measured at a second position in the wellbore axially separated from the first position. The wellbore fluid is then moved through the wellbore tool assembly at a second flow rate. Measuring pressure at the first and second positions is repeated, and at least one rheological property is determined from the pressure measurements.
    Type: Application
    Filed: August 7, 2001
    Publication date: February 13, 2003
    Inventor: Iain Cooper