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

Claim 0:
1. A method for detecting the occurrence of a drilling fluid properties change at a well comprising:
recording a first set of measurements collected from the well with a pressure transducer disposed on a downhole tool; wherein the measurements are collected from the drilling fluid in the well;
transmitting the recorded measurements to an information handling system for processing; wherein the information handling system is disposed on a surface of the earth; wherein the downhole tool comprises a receiver and a transmitter configured to communicate with the information handling system;
processing the recorded measurements to provide a first set of data;
calculating a first score based on the first set of processed data;
comparing the first score to a predetermined rule based on a specified time frame; and
altering a flow rate of a treatment fluid mixing with the drilling fluid in the well with a valve by adjusting a flow path through the valve to alter the rate of change in the drilling fluid within the well based on the score comparison by an operator;
wherein the first score is calculated using:, score
  =
  
   
    d
    -
    
     median
     (
     
      w
      ⇀
     
     )
    
   
   
    mad
    (
    
     w
     ⇀
    
    )
   
  
 

wherein d is the first data set;
wherein median () is a set of data points for the specified time frame in which the first 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 and an actual first set of measurements.