Patents by Inventor Andrew R. Strilchuk

Andrew R. Strilchuk 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).

  • Process for remedial cementing
    Patent number: 4648453
    Abstract: An improved method is disclosed for remedial cementing operations. Prior to conducting the remedial cementing operation, the zone to be cemented is pretreated with a hydrocarbon solvent capable of dissolving hydrocarbons, such as oils and asphaltenes. Following solvent treatment, the zone may be treated with an acid solution capable of dissolving mineral constituents.
    Type: Grant
    Filed: November 18, 1985
    Date of Patent: March 10, 1987
    Assignee: Exxon Production Research Co.
    Inventors: Surjit S. Nagra, Andrew R. Strilchuk