摘要
传统的岩性反演主要是利用测井曲线与岩性的相关性、敏感性,将有关测井曲线(如自然伽马、电阻率等)转换成岩性曲线。这种反演只是地下岩层的某一种属性的反映,不是真岩性的反映。也就是说,这类反演方法并没有直接应用录井岩性资料和测井解释成果。本文提出一种直接依据岩性的反演方法,即先将录井岩性资料和测井解释成果进行数字化,然后将其当作是实测的"测井曲线",直接加载到反演软件中,实现了真正意义上的岩性反演。通过应用实例分析,表明此法能将有效储层和非储层进行区分,并能确定储层所含流体的性质。
By utilization of correlation and sensitivity between the well logging curves and lithologies,the traditional lithology inversion transforms related well logging curves (such as natural gamma curve,resistivity curve and so on) to lithology curves,however the inversion only can be seen as a reflection of one attribute of the subsurface lithology,not the reflection of the true lithology.In other words the inversion method does not directly utilize the logging lithology data and well logging interpretation results.In this paper the inversion method directly based on lithology was introduced,at first the logging lithology data and well logging interpretation results were digitized,then the digitized data were directly input into inversion software as field-measured well logging curves,as a result the true lithology inversion was conducted.The application of the method in the field indicates that the method could resolve effective reservoirs and non-reservoirs,it even could determine the properties of the fluid which the reservoir contains.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2010年第4期577-583,共7页
Oil Geophysical Prospecting
关键词
录井
测井解释
反演
储层预测
logging,well logging interpretation,inversion,reservoir characterization
