利用微焦点X射线CT描述特殊岩性油藏岩心

Description of special lithological cores with microfocus X-ray CT

方法利用微焦点Ｘ射线ＣＴ对特殊岩性（如碳酸岩、火成岩、泥岩、砂砾岩、疏松砂岩等）油藏岩心进行分析和描述。目的探索一种准确分析特殊岩性油藏岩心的方法。结果该技术在特殊岩性油藏岩心的裂缝分布和微裂缝的描述、再现微观孔隙结构、确定砂砾岩的储集性、筛选岩心、层理判断、解释异常压缩系数、观察孔洞连通性等方面，均取得了良好效果，其结果是用常规方法无法获得的。结论微焦点 Ｘ射线ＣＴ分析描述特殊岩性油藏岩心，具有常规方法无可比拟的优势，能解决许多复杂的地质现象，回答一些常规手段无法解决的问题。

Method Cores of special lithology (such as carbonate, igneous rock, mudstone, glutenite, unconsolidated sandstone, etc. ) are analyzed and described with microfocus X-ray CT. Purpose To search for an approach to analyze special lithologic cores accurately. Result Unmatchable results have been obtained in revealing fractures distribution, describing micro-fractures, restoring micro pore structure, determining accumulation property of glutenite, screening rocks, identifying laminations, interpreting anomaly compressibility coefficients, observing pores connectivity and etc. Conclusion Unmatchable advantages include interpreting many sophisticated geological phenomenon and answering some questions that are impossible with conventional methods.