王府断陷营城组至火石岭组火山岩储层微观特征研究

发布时间：2018-07-11 09:34

本文选题：火山岩储层 + 岩性　；参考：《东北石油大学》2015年硕士论文

【摘要】：《王府断陷深层营城组至火石岭组火山岩储层微观特征研究》课题针对研究区深层火山岩储层,利用化验分析资料和矿场钻井岩心资料,深入探讨该地区火山岩储层微观特征,得到如下结论:王府断陷火山岩储层主要分布在沙河子底部和火石岭组。研究区火山岩岩性复杂,从酸性火山岩到基性火山岩,从火山熔岩到火山碎屑岩、沉火山碎屑岩及火山碎屑沉积岩均有钻遇。统计表明研究区火山岩岩性钻遇最多的是中性火山喷出岩,其次是酸性火山喷出岩,基性火山喷出岩所占比例非常小。研究表明,研究区火山岩储集空间可分为三大类:原生孔隙、次生孔隙和裂缝,具体又可分为原生气孔、颗粒/晶粒间孔、矿物炸裂纹和解理缝隙、基质溶蚀孔、晶内溶蚀孔、晶间微孔、杏仁体内溶蚀孔、构造裂缝、溶蚀缝、原生收缩缝十个亚类。火山熔岩通常发育有原生气孔、基质溶蚀孔、晶内溶蚀孔、晶内微孔隙等,对火山岩储层物性其主要作用的是原生气孔和基质溶蚀孔;火山碎屑岩主要储集空间主要有粒(砾)间孔、基质溶蚀孔、斑晶溶蚀孔等;而裂缝在各种岩性均有发育。研究区影响火山岩储层储集空间的成岩作用类型可分为挥发分逸出、压实压溶作用、熔蚀作用、压实胶结作用、交代作用、充填作用、溶蚀溶解作用、脱玻化重结晶作用等成岩作用。不同成岩作用对火山岩储层的影响不同,挥发份逸出、溶蚀溶解作用、脱玻化重结晶等作用多火山岩储层储集能力的改善作用重大,而压实作用、胶结作用、充填作用等则在很大程度上降低了火山岩储层储集能力。
[Abstract]:A study on the microscopic characteristics of volcanic reservoir in deep Yingcheng formation to Huoshiling formation in Wangfu fault depression. Aiming at the deep volcanic rock reservoir in the study area, the microscopic characteristics of volcanic rock reservoir in this area are discussed by means of laboratory analysis data and drilling core data. The conclusions are as follows: the volcanic reservoirs in Wangfu fault depression are mainly distributed in the bottom of Shahezi and the Huoshiling formation. The lithology of volcanic rocks in the study area is complex, ranging from acid volcanic rocks to basic volcanic rocks, from volcanic lava to pyroclastic rocks, submersible pyroclastic rocks and pyroclastic sedimentary rocks. Statistics show that neutral volcanic exhalation is the most common lithologic rock in the study area, followed by acid volcanic exhalation rock, and the percentage of basic volcanic exhalation rock is very small. The results show that the reservoir space of volcanic rocks in the study area can be divided into three categories: primary pore, secondary pore and fracture, and can also be divided into primary pore, particle / grain pore, mineral explosive crack and cleavage, matrix dissolution pore, and inner dissolution pore. Intergranular micropores, amygdaloid dissolution pores, structural cracks, dissolution joints, primary shrinkage joints 10 subtypes. Volcanic lava usually has primary pores, matrix dissolution pores, micropores within crystals and so on. The primary pores and matrix dissolution pores play a major role in the physical properties of volcanic reservoir. The main reservoir spaces of pyroclastic rocks are intergranular (gravel) pores, matrix dissolution pores, porphyry dissolution pores and so on, while fractures are developed in all kinds of lithology. The types of diagenesis affecting the reservoir space of volcanic reservoir in the study area can be divided into volatile escape, compaction, pressure solution, erosion, compaction and cementation, metasomatism, filling and dissolution, Devitrification recrystallization and diagenesis. The effect of different diagenesis on volcanic reservoir is different. Volatile escape, dissolution, debonding recrystallization and so on play an important role in improving the reservoir capacity of multi-volcanic rock reservoir, while compaction and cementation play an important role in improving the reservoir capacity. Filling reduces the reservoir capacity of volcanic reservoir to a great extent.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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