摘要
采用沉积过程分析、构成分析的研究思路,以镇烃油田镇泾5井区岩心、测井和分析化验资料为依据,通过对单井岩心旋转扫描照片的过程沉积学和沉积构成分析,区分了不同岩石相和4、5级界面,划分出水下分流河道(SDC单元)和河口砂坝(MB单元)2类构成单元,并结合测井曲线分析,建立了4、5级界面和构成单元的测井响应模式。在此基础上,通过顺沉积走向的4条构成单元剖面分析,总结了该复合砂体内部构成单元的构成模式及变化规律。以分析化验资料为依据,总结了复合砂体的储层岩性、物性及孔喉结构特征,划分了储层类型,建立了优质储层的基本识别标准。进一步总结了优质储层在水下分流河道和河口砂坝单元内部的分布模式。
This study has distinguished different lithologic facies,fourth-order surfaces and fifth-order surfaces and classified two kinds of architecture elements of submerged distribution channel and mouth bar.It also has built up logging recognition patterns on fourth-order and fifth-order surfaces and architecture elements by applying the theory on the architecture element and sedimentary process analysis based on the revolving scanning picture of the core,the log information and the lab data in Zhengjing Oilfield.The analysis of the four architecture element sections along the sedimentary direction leads to the summary of the architectural pattern of architecture elements in the composite sand body.Meanwhile,the study also has presents the summary of the features of lithology,porosity and permeability and pore structure of the reservoir together with the classification of the reservoir types and the recognition criteria of good quality reservoir by lab data.Further,the distribution pattern of good quality reservoir in submerged distribution channel and mouth bar has been summed up,which is important to increase oil reserve and output for the horizon.
出处
《地质科技情报》
CAS
CSCD
北大核心
2010年第3期62-68,共7页
Geological Science and Technology Information
基金
国家重大专项(2008ZX05045)
关键词
构成分析
优质储层
辫状河三角洲
鄂尔多斯盆地
architecture element analysis
good quality reservoir
braided river delta
Ordos Basin
