The application discloses a quick well killing method without
drill bit at well bottom, and relates to the technical field of
well control of
oil drilling. First, basic data is collected, initial state calculation of well killing is carried out according to the collected basic data, then suitable well killing
fluid density is designed according to the initial state, casing pressure is adjusted so that the well killing fluid is divided at the
drill bit, well killing parameters are designed through the well state, well killing progress is judged through the standpipe pressure and the casing pressure, and well killing is finished after the contaminated
drilling fluid is completely discharged through circulation of the well killing fluid. The application proposes the quick well killing method without
drill bit at well bottom, which has certain guiding significance for well killing in the case that the
drill bit is not at the well bottom.