Because of the low expulsion efficiency of hydrocarbon in Yingwang area hydrocarbon resources mainly concentrate in Zhidan area.
由于英旺地区排烃效率较低,资源量主要集中在志丹地区。
By using a new method and pyrolysis date of rock, study on expulsion efficiency of hydrocarbon for lower tertiary source rock has been carried out in north area of lower Dongpu Depression.