Well Control - Balanced Mud Method
In this method the well is killed in one circulation. The kick is circulated out whilst mud of sufficient density to (over) balance the pore pressure is circulated in.
Mud with a density sufficient to balance the pore pressure is circulated at a constant rate. At the same time, to prevent any further influx, the choke is adjusted to maintain a constant bottom hole pressure slightly in excess of the pore pressure. The balanced mud method enables the well to be killed in one circulation. Adequate stocks of dry barytes and spare . . .