P型核磁共振成像测井资料处理解释方法

Method for Data Processing and Interpretation of MRIL-Prime Logging Tools

哈里伯顿公司的P型核磁共振成像测井技术应用广泛,但国内该技术的解释处理方法还不完善。利用基于采集频率的回波信号叠加方法和相位校正方法提取回波信号,再采用基于分数维的奇异值横向弛豫时间(T2)谱分解方法和T2谱拼接方法获取T2谱,然后利用差谱分析方法和移谱分析方法定量识别流体,最后结合其他测井资料进行测井资料综合解释,为油田勘探开发服务。为推广应用该方法,基于CifLog测井解释平台研制了一套全新的P型核磁共振成像测井解释处理软件,其油田应用的处理成果与哈里伯顿公司的Petrosite解释平台一致,说明该方法是正确的,研制的新软件有很好的应用前景。

MRIL-Prime logging tools produced by Halliburton were widely used in China.However,the data processing and interpretation methods were not complete.The echo signals were extracted by using signal superposition method and phase correction method based on capturing frequency.The singular value decomposition method in fractal dimension and the method of splicing T2 spectrum were used to obtain T2 spectrum.And then fluid was quantitatively identified on the basis of differential spectrum and shift spectrum analysis methods.In combination with other logging data,comprehensive interpretation of logging data was performed for oilfield exploration and development.In order to popularize the application,a new MRIL-P software is developed based on CifWeb platform.Practice shows that the results of data process are in good agreement with that of Petrosite interpretation platform.It is proved that the method mentioned above is effective.So the research and development on the software have good perspectives.