Patents Examined by Kenneth R. Kaiser
  • Apparatus for acoustically investigating a borehole
    Patent number: 4382290
    Abstract: An apparatus is described for acoustically investigating a casing in a borehole with a source of acoustic energy that is directed at the reflecting surface of an acoustic reflector in front of which is an acoustically transparent window. The inclination of the window relative to the reflecting surface is selected to deflect secondary transmissions and thus reduce window produced interferences. Several embodiments are described.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: May 3, 1983
    Assignee: Schlumberger Technology Corporation
    Inventor: R. Mark Havira