Patent ID: 11959380
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 20:
21. A method for detecting the occurrence of a hole cleaning event at a well comprising:
recording a first set of measurements collected from the well; wherein the first set of measurements are collected from a sensor disposed on a downhole tool comprising a receiver and a transmitter configured to communicate with an information handling system;
transmitting the recorded measurements to the information handling system for processing; wherein the information handling system is disposed on a surface of the earth;
processing the recorded measurements to provide a first set of data;
calculating a first score based on the first set of processed data;
recording a second set of measurements collected from the well;
processing the second set of recorded measurements to provide a second set of data;
calculating a second score based on the second set of processed data;
wherein the first set of processed data and the second set of processed data is the number median of absolute difference from normal;
combining the first score and the second score using a weighted average; and
comparing the combined scores to a predetermined rule based on a specified time frame; and
altering a drilling parameter by adjusting the rate of advance of a drill bit a drilling fluid flow rate, or a drill string rotation per minute based on the score comparison by an operator to mitigate a hole cleaning event;
wherein the first score and the second score are calculated using:, score
  =
  
   
    d
    -
    
     median
     (
     
      w
      ⇀
     
     )
    
   
   
    mad
    (
    
     w
     ⇀
    
    )
   
  
 

wherein d is the first data set or the second data set;
wherein median() is a set of data points for the specified time frame in which the first set of data or the second set of data is being compared to;
wherein mad() is a median absolute deviation between a normal difference between a simulated first set of measurements or a simulated second set of measurements and an actual first set of measurements or an actual second set of measurements.