井中地震用于陆相储层分析的几项技术

中国陆相储层分布广泛，类型复杂，横向变化大，勘探开发成本高，进行储层分析要求采用高新技术和综合利用多种方法。本文总结了在我国几个油区进行陆相储层分析的几项地震技术即：垂直地震剖面（ＶＳＰ）技术，多偏移距和井间层析成象技术以及多参数分析和综合解释技术，在适应我国经济发展的水平和现状的条件下，用以解决我国复杂的陆相油气储层分析的问题。

TECHNIQUES FOR CONTINENTAL RESERVOIR ANALYSIS BY CROSS WELL SEISMICS

As the deepening of exploration and development for oil and gas,the reservoir analysis,reservoirhorizontal prediction,probing cross well dead region for oil,and reservoir engineering monitoring are considered more and more.There exist a wide distribution of continental reservoirs,including thin-interlayers,ancient riverpaths,alluvial fans,ancient hidden mountains,and weathering crust, etc.These reservoirs are small inthickness(even less than 1 meter for single layer), large in horizontal variation(increases or decreases insandstone contents and porosity, sharp disapppearing,and cut by faults,etc.),and high in exploration anddevelopment cost.But they are the main oil and gas resources in China. Therefore, they must be exploredand developed.New techniques and integrated methods have to be adopted to analyse continental reservoirs in China because of the great difficulties in analysing.This paper presents seismic techniques for continental reservoiranalysis in several oil bearing areas of China,being vertical seismic profiling(VSP),multi-offset and crosswell imaging,and multiparameter analysis as well as integraed interpretation.Using these techniques,wemay combine the data from wells that have high vertical resolution but low horzontal probing scope with thesurface seismic data that have relative low vertical resolution but rather high horizontal probing scope,whichmay solve the complex continental reservoir analysis in China and suit China's situation of economic development owing to having avoided expensive equipment and adopted reasonable surveying methods.