塔里木盆地英买力地区志留系储层构造挤压及火山热液改造效应

针对构造挤压、火山热液发育区的砂岩储层特征及其物性空间变化，依据露头、岩芯、实验分析、测井等资料，基于砂岩动力成岩理论，提出了构造挤压和火山热液作用对砂岩储层性质的定量影响效应。研究表明:塔里木盆地英买力地区志留系柯坪塔格组为临滨亚相石英砂岩沉积，英买35井区构造压实减孔比英买34井区多7%~8%，海西早期构造挤压及海西晚期火山热液作用产生的裂缝改善了英买35井区储层性质。石英砂岩储层性质受构造挤压和火山热效应影响明显，构造挤压成岩效应受控于构造作用时间、构造样式和砂岩原始沉积组构；火山热液对砂岩储层性质的影响具有空间分带性，影响范围为侵入岩体厚度的一半，变质矿物的广泛发育是储层性质遭受破坏的见证。

Tectonic Compression and Volcanic Hydrothermal Reconstruction Effects of Silurian Sandstone Reservoirs in Yingmaili Area

Considering the modifications of reservoir property in tectonic compression and volcanic hydrothermal transformation area, according to the outcrop and core data, the experimental analysis, and the well logging information, based on the theory of sandstone dynamic diagenesis, we bring forward this research on the effects of tectonic compression and volcanic hydrothermal transformation in marine sandstone reservoirs. It indicates that clastic particles in Yingmai 35 are obviously more compacted than those in Yingmai 34, the rock porosity is 7%~8% less than the latter. The tectonic compaction in early Hercynian and the volcanic hydrothermal transformation in the late Hercynian had improved the reservoir quality in Yingmai 35. The quartz sandstone reservoirs are obviously affected by the tectonic compression and volcanic hydrothermal transformation. The tectonic compression is controlled by the duration,structural pattern,and the original sedimentary fabric. The volcanic hydrotherm has a zonal influence on the sanstone reservoir quality, influencing area is within the half thickness of the volcanic intrusive, the widely distributed metamorphic mineral is the evidence of the destruction of the reservoir.