Patents Assigned to ReedEycalog, L.P.
  • Sub-reamer for bi-center type tools
    Patent number: 6913098
    Abstract: An improved bi-center with improved directional stability and wear resistance is disclosed, said bit optimally utilizing a plurality of shaped PDC cutting elements selectively situated about the cutting surfaces of the pilot and the reamer to produce a minimal force imbalance, where further said pilot bit and the reamer are force balanced to further reduce imbalance in the operation of the tool.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: July 5, 2005
    Assignee: ReedEycalog, L.P.
    Inventors: Coy M. Fielder, Rogerio H. Silva