ADAPTIVE FILTER PREDICTION METHOD AND SYSTEM FOR DETECTING DRILL BIT FAILURE AND SIGNALING SURFACE OPERATOR

摘要

An apparatus and method for monitoring and reporting downhole bit failure. Sensors (3302) are located on a sub assembly (104) (which is removable from the drill bit (108) and send data to neural net or other adaptive filter (3306). The neutral net (3306) uses past sensor readings to predict future sensor readings. The value predicted for the sensors (3302) is substracted from the actual value to produce a prediction error. Increases in prediction error are used to indicate bit failure. The results of this are transmitted to the operator by varying the pressure in the drilling mud flow.