The key of finding hydrocarbon reservoir is to find the profitable oil and gas reservoir.This paper uses the conception of"special geologic bodies"to study the
Qaidam Basin, situated in the northeastern Qinghai|Tibet plateau of western China at 35°55′~39°10′N and 90°~98°20′E, is surrounded by thrusts or folded belts. It is adjacent to the Qilian Mountains o