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中文摘要：
致密油作为一种非常规油气资源,具有低孔隙度、低渗透率、强非均匀性等特点,常规地震处理技术在致密油预测上面临较大挑战.本文系统地回顾了致密油储集区的有机质富集区、含油性、孔隙度、脆性以及裂缝五个方面的地震评价思路;并详细讨论了地震反演技术在致密油储层上的适用性;最后对地震技术在致密油预测上的应用做了初步展望,建议在今后的工作中可着重研究适合致密油储层特点的地震岩石物理模型,以及兼顾精度和效率的地震反演方法.
英文摘要：
Tight oil,as one of the unconventional oil and gas resources, shows low porosity, low permeability and strong anisotropy etc.,which make us difficult to predict tight oil with seismic technology. For example,the properties of anisotropy and the complicated lithology bring challenges both in rock physics modeling and the extraction of crack parameters. In addition,we also cannot ignore the influence of low porosity and complex oilwater relationship on fluid identification. Aiming at these characters and difficulties,the study in this paper summarized four aspects including the core of research,the exploration target,the evaluation index and the seismic prediction method. Especially,on the basic of proposed seismic rock physics model and the guidance of seismic forward modeling,we developed a method that use the seismic inversion technology to evaluate the riching region of organic matter,the oiliness,the porosity,the brittleness and fracture developed zones. Then, we discussed the applicability of several seismic inversion technologies. In the end,we made a preliminary outlook that it is necessary to further focus on the seismic rock physics model closer to tight oil reservoir,and the high-efficiency seismic inversion technology.
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