Patents Represented by Law Firm Hosier & Sufrin
  • Automatic well treatment method
    Patent number: 4817722
    Abstract: A method and apparatus for treating oil and gas wells by automatically pre-flushing the well casing annulus with production fluid, pumping treatment chemicals into a rapidly flowing production fluid line for uniform mixing and introduction into the casing annulus, and post-flushing with production fluid.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: April 4, 1989
    Assignee: Nalco Chemical Company
    Inventors: Ralph R. Montfort, Jr., James J. Moran