Resources Contact Us Home
Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator

Image Number 16 for United States Patent #6817425.

An apparatus and method for monitoring and reporting downhole bit failure. Sensors are located on a sub assembly (which is separate from the drill bit itself but located above it on the drill string). Strain measurements are taken from the sensors to detect changes in induced bending and axial stresses which are related to a roller cone bearing failure. As a cone begins to fail, the average share of the total load on the bit that the failing cone can support changes, which causes a change in the bending strain induced by the eccentric loading of the cone.

  Recently Added Patents
Process for production of nickel oxide-stabilized zirconia composite oxide
Methods and systems for use in tracking targets for direction finding systems
Gathering user feedback in web applications
High performance design rule checking technique
Pre-primed roofing membrane
Technique for skipping irrelevant portions of documents during streaming XPath evaluation
Call admission control method and system
  Randomly Featured Patents
Attachment device for a vacuum cleaner
Fusing device for an electrophotographic image forming apparatus
Clamp for hoses or the like
Hub locks for independently suspended wheels
Process for warm dehulling soya
Apparatus for mounting component
Vacuum assisted surgical stapler
Apparatus for opening and depositing a signature
Fiber array, method for fabricating the same and optical device using the fiber array
Method for selecting a channel in a wireless network