With respect to the geological conditions in the salt field of Ye County, full-face drilling is per-formed in the upper section of the well using high speed jet drilling technology with high bit pressure, low rotaryspeed, high pumping pressure and high pumping rate, while in the lower section core drilling is carried on using core drilling technology with low bit pressure, high rotary speed, low pumping pressure and low pumping rate.Anti-cave fresh water mud and saturated salty water mud are employed , resulting better technical benefit.