Patents Represented by Attorney, Agent or Law Firm Brigitte Jeffery Echds
  • Method and system for avoiding damage to behind-casing structures
    Patent number: 6725927
    Abstract: A structure is positioned on the outer surface of a casing or liner to enable cutting the casing in substantially any azimuth over a given length of casing without damaging the structure. After placing the casing in a wellbore, the position of the structure on the casing may be determined with reference to an orienting slot in an indexing coupling. Thereafter, a non-colliding region on the casing may be identified for cutting the casing.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: April 27, 2004
    Assignee: Schlumberger Technology Corporation
    Inventor: Herve Ohmer