Patents Assigned to Tech-Star Fluid Systems Inc.
  • Drilling fluid and method for drilling in coal-containing formations
    Patent number: 8387723
    Abstract: A drilling fluid and method for drilling in a coal containing formation. The method includes: providing a mixed metal-viscosified drilling fluid including at least 1% potassium salt; circulating the drilling fluid through the well; and drilling into a coal seam.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: March 5, 2013
    Assignee: Tech-Star Fluid Systems Inc.
    Inventors: Stefan Alexandru Stoian, Carl Keith Smith
  • Drilling fluid and methods
    Patent number: 8338340
    Abstract: A drilling fluid comprising: a non-ionic surfactant including at least one of a branched alcohol ethoxylate and a capped alcohol ethoxylate, a detergent builder and a viscosifier.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: December 25, 2012
    Assignee: Tech-Star Fluid Systems Inc.
    Inventors: Stefan Alexandru Stoian, Carl Keith Smith