Once you finish weighing up your mud system to required kill mud weight, you need to do the 2 nd circulation of driller’s method. This post will describe how to do the 2nd circulation of driller’s method.
The second circulation of the driller’s method will be started after drilling fluid is weighted-up to required kill weight.
First, when you establish the desired pump rate you must hold casing pressure constant while bringing the pump up to speed, killing rate +/- 2-5 bpm. Please always hold this pump rate constant throughout the killing process.