塔北西部火成岩岩性测井识别方法

Method for Identifying Igneous Lithological Logging in the West of Northern Tarim Basin

塔里木盆地火成岩研究起步较晚。基于取心井岩心资料,对塔北西部火成岩的岩性进行了划分,归纳出适合该区的火成岩分类方案,利用测井资料,详细研究了不同岩性的测井响应特征,并进行总结。通过绘制测井属性交会图图版,建立了研究区火成岩岩性识别模式,并利用FORWARD平台,编制出一套基于测井属性交会图识别火成岩的应用软件,实现研究区火成岩岩性自动判别。该方法对于在该区未取心井中正确识别火成岩岩性具有重要的指导意义,为深入开展塔里木盆地火成岩研究作好了铺垫,同时为塔里木盆地火成岩储层评价研究奠定了一定的基础。

Study on igneous rocks in Tarim Oilfield was started later, based on the data of coring and logging, igneous rocks in west North Tarim Basin were divided and arranged, and the log responses of the corresponding types were investigated.By analyzing correlation between lithologic types and their responses, a lithologic identification model was established by using some crossplots, it was used to identify lithology of igneous rocks in coring wells in the study area based on the Program of FORWARD.This method may play an important role in non-coring wells, and provide a good foundation for igneous reservoir evaluation in the studied area.