Patents Assigned to Buckman Laboratories of Canada, Ltd.
  • Application of N,N-dialkylamides to control the formation of emulsions or sludge during drilling or workover of producing oil wells
    Patent number: 5567675
    Abstract: New compositions are disclosed that are useful for the prevention of sludge or emulsions during the drilling or workover of producing oil wells. These compositions are comprised of a N,N-dialkyl amide of a fatty acid, a hydrocarbon solvent for petroleum and a mutual oil/water solvent. Also taught and claimed is a method of preventing such sludge or emulsion formation or of breaking the same after it is formed.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: October 22, 1996
    Assignees: Buckman Laboratories of Canada, Ltd., Buckman Laboratories Int'l., Inc.
    Inventor: Julian Romocki