Concerning Well Control: List 10 signs of abnormal pressure pressured zones while drilling a well?

10 signs of abnormal pressure pressured zones while drilling a well:





1.Change in rate of penetration


2.Change in cutting shape and size


3.Increase in rotary torque


4.Increase in drag


5.Sloughing shale


6.Increase in gas content


7.Variations in “d” exponent


8.Changes in flowline temperature


9.Decrease in shale density


10.Increase in chloride content