摘要
烃源岩定量研究是成因法油气资源评价的重要基础 ,在烃源岩定量评价技术与方法日臻完善的背景下 ,仍存在一些问题有待进一步改进 :1对烃源岩的定义仍存在一定分歧 ,应明确区分烃源岩与有效烃源岩的差别 ;2确定有效烃源岩规模时 ,不应以烃源岩成熟范围代表有效烃源岩的展布 ,有效烃源岩的厚度统计标准也应因烃源岩非均质性的发现和有效排烃厚度的否定而需重新审视 ;3烃源岩中实测残留烃由于取样、搁置等原因损失很大 ,但对其进行轻烃校正至今并未引起足够重视 ,目前所用方法不够成熟 .另外 ,利用氯仿“A”或热解参数 S1 模拟烃源岩残留烃变化规律及能力同样也需慎重 .
Quantitative evaluation of hydrocarbon source rock is important basis of resource evaluation upon the principle of hydrocarbon formation. Although the techniques and methods for the quantitative evaluation of hydrocarbon source rock are increasingly developed, there still some problems to be solved: (1) there are disagreements on the definition of hydrocarbon source rock, in which the difference between hydrocarbon source rock and effective hydrocarbon source rock must be distinguished; (2) in determining the volume of effective hydrocarbon source rock, it should be clear that matured hydrocarbon source rock is not equal to effective hydrocarbon source rock, and the criterion for determining the thickness of effective hydrocarbon source rock has to reconsidered because of the heterogeneity of hydrocarbon source rock and the negation of the effective thickness of hydrocarbon source rock; (3) much of the retention hydrocarbon in source rock is lost due to sampling, preservation etc. But the corresponding correction is not paid much attention yet and the correction methods applied now are not very reliable. In addition, the characters of retention hydrocarbon evolution simulated by chloroform bitumen 'A' or pyrolysis parameter S 1 are not very reliable either. The problems mentioned above will all influence the results of resource evaluation greatly.
出处
《西安石油大学学报（自然科学版）》
CAS
2004年第1期15-18,23,共5页
Journal of Xi’an Shiyou University（Natural Science Edition）
关键词
烃源岩
定量评价
油气藏
成因
油气勘探
排烃厚度
有机质丰度
残留烃
轻烃恢复
effective hydrocarbon source rock
effective expulsion hydrocarbon thickness
abundance of organic matter
retention hydrocarbon
light hydrocarbon correction
