Patents Assigned to Formation Damage Removal Corporation
  • Well heater
    Patent number: 4678034
    Abstract: The tubing of a cased petroleum well is heated for any purpose such as to prevent deposition of solids by coupling a microwave source to the well annulus at the surface and transmitting the waves down the annulus.Special coupling means is provided to couple at the annulus to accommodate the arbitrary positions of naturally occurring microwaves in the annulus of the well.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: July 7, 1987
    Assignee: Formation Damage Removal Corporation
    Inventors: Bernard J. Eastlund, Kenneth J. Schmitt, Ronald M. Bass