Abstract： BZ29-4-A19 well is a production well. After the tubing conveyed perforation （TCP） balance job, blowout happened in the process of raising pipe string. Spray expanded rapidly, so that it is impossible to pick up top drive and implement conventional well control operation. The operators chose to close the shear ram blowout preventer and realized well shutin, and then successfully implemented the lubrication well killing method to make the well out of danger. We introduce the basic situation of the well, the process of blowout and the process of lubrication well killing method.