徐家围子断陷火山岩岩性的测井识别技术

Logging identification technique of volcanic rocks in Xujiaweizi fault depression

本文以钻井取心、分析测试和测井资料为基础,应用聚类分析方法,通过各种测井交会图在大庆油田徐家围子断陷营城组深层火山岩中识别出了六类岩性,与钻井和录井资料解释结果相比,判别正确率达90％以上。该技术对于在未取心井中正确识别火山岩老性具有重要意义,也为火山岩储层评价研究奠定了良好的基础。

Six volcanic rocks have been identified in Yingcheng Formation of Xujiaweizi fault depression by applying cluster analysis and various cross plot techniques based on the data of coring, analytical testing and logging. The accuracy of identification is over 90% compared to the results of drilling interpretation. This technique can be used to identify the volcanic rocks for wells without coring. The result of identification has provided geological basis for volcanic reservoir evaluation.