Patents Assigned to Deep South Chemical
  • Method of cleaning a well bore prior to cementing
    Patent number: 5904208
    Abstract: Aqueous and non-aqueous systems for cleaning a section of a subterranean well borehole and casing prior to cementing. A series of spacer fluids are introduced into the borehole to displace drilling fluid and to provide clean and water wet casing and borehole surfaces of the cleaned section of well bore. The cleaned section of the well bore will provide surfaces for superior bonding of the cement to the surfaces.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: May 18, 1999
    Assignee: Deep South Chemical
    Inventors: Warren J. Ray, David G. Hines