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为了研究和认识了解松辽盆地腰深地区火山岩的成岩作用及其对储集空间演化的影响,进一步指导火山岩气藏的下一步勘探与开发。在进行大量岩心描述的基础上,再结合室内岩石薄片镜下鉴定,铸体薄片孔隙特征分析,显微照相及扫描电镜观察对腰深地区营城组火山岩的成岩作用进行了详细地研究。结果表明:营城组共发育10种成岩作用类型,其中溶解作用、风化淋滤作用、构造作用对储层孔隙的形成起决定性作用;储集空间演化共有四个阶段,成岩作用对其储集空间演化的影响很大。
In order to study and understand the diagenesis of volcanic rocks and their influence on the evolution of reservoir space in the Yao-Shen area, Songliao Basin, further exploration and development of volcanic gas reservoirs are conducted. On the basis of a large number of core descriptions, diagenesis of Yingcheng volcanic rocks in the YaoZong area was studied in detail with the microscopic identification of the in-situ rock thin slices, the pore features of the cast thin films, the photomicrographs and the scanning electron microscopy observations. The results show that there are altogether 10 diagenetic types in Yingcheng Formation, in which dissolution, weathering and leaching, and tectonism play a decisive role in the formation of reservoir pores. There are four stages in the evolution of reservoir space. Diagenesis The impact of spatial evolution is great.