What is the "dynamic kill" method in well control?

The dynamic kill method is an advanced technique used in well control that involves circulating heavy drilling fluid (mud) while the well is flowing. This approach allows operators to effectively combat a kick — an influx of formation fluids into the wellbore — by increasing the density of the fluid in the well, which helps to counteract the pressure from the formation. By circulating this heavier mud, the wellbore pressure is increased dynamically in real-time, allowing for better control of the well and preventing the kick from escalating into a more serious situation, such as a blowout.

This method is particularly advantageous because it allows for immediate correction of issues without needing to shut in the well completely. It emphasizes maintaining circulation, which is critical for effective well control, as it helps to quickly stabilize the pressure in the wellbore as the heavy mud is introduced.