9Abdul J Zainul, Teh Yat Hong, Emmanuel O Egbogah, et al.An integrated approach to petroleum resources definnitions,classification and reporting[ C]. SPE 38044,1997: 259-266.
10I~mrcy G J ,Warne G A,Ashton B R, et al. Definitions and guilelines for classification of oil and gas reserves [J]. The Journal of Canadian Petroleum Technology, 1993, 32(5):10-21.