页岩油资源评价技术方法及其应用

Resource evaluation method for shale oil and its application

通过对页岩油赋存特征分析,建立了适合于中国勘探开发阶段并具有可操作性的页岩油资源评价方法,对方法中所涉及的关键参数进行了分析和研究,重点探讨了不同级别页岩体积的确定、氯仿沥青"A"和热解S1轻烃恢复系数求取以及吸附油含量的计算等问题。轻烃的恢复系数受有机质的演化程度影响,随演化程度的增高而增大,而吸附油含量与页岩中的有机质含量相关,研究认为:氯仿沥青"A"中吸附油的比例约为TOC的0.2倍,热解S1中约为TOC的0.1倍。应用该研究提出的页岩油资源量计算方法对渤南洼陷古近系页岩油资源量进行了估算,并讨论了不同级别页岩对资源的贡献。

Based on the analysis of the occurrence characteristics of shale oil and considering the exploration and development stage and the operability,a resource evaluation method for shale oil is established.It is proposed that the key parameters for the assessment of shale oil are mainly concerned with the volume of the different level shale,the content of absorbed hydrocarbon,as well as the correction coefficient of pyrolysis parameter S1 and chloroform extract for evaporative losses.The result shows that the correction coefficient of light hydrocarbon evaporative losses increases with maturity and the contents of absorbed hydrocarbon are related to the organic contents in shale.The absorbed hydrocarbon in chloroform extract is about 20 percent of TOC,and the pyrolysis parameter S1 is about 10 percent of TOC.In addition,the shale oil resource of Paleogene shale in Bonan Sag is evaluated by using the method.And the resource potential of the different level shale has been discussed.