Surgepressure is a major factor which affects borehole stability.
波动压力是影响井眼稳定的主要因素。
2
The surgepressure of overflow well shut-in impacts whether well can be shut down and the choice of well shut-in modes.
溢流关井的水击压力关系到能否关井，以及关井方式的选择。
3
By using the combined implicit characteristic line method, the calculation of the transient surgepressure in the flow conduit of a drilling well has been resolved in this paper.