Patent ID: 8453758

Claim:
A method for killing a well bore traversing a formation, the method Comprising: coupling a return line to a riser with a diverter spool configured to divert fluid from the return line into the well bore; coupling a power riser to the return line at an interface positioned along the return line, wherein the return line has a first section extending from the interface to the diverter spool and a second section extending from the interface; pumping a heavy fluid through the return line and the diverter spool into the well bore, wherein the hydrostatic pressure of the heavy fluid injected into the well bore exceeds the pressure of fluid in the formation; wherein pumping the heavy fluid through the return line and the diverter spool into the well bore comprises: pumping a first fluid through the second section of the return line into the interface; pumping a second fluid through the power riser into the interface; and injecting the second fluid into the first fluid in the interface to form the heavy fluid.