Experiment and numerical simulation are integrated to investigate the effects of pore structure on physical properties in reef-shoal carbonate samples from the Tarim Basin. The results show three correlation trends between pore structure parameters and physical properties, which closely depend on the pore structure type. The acoustic velocity of the fractured-vuggy type (Structure I) is mainly affected by porosity and pore shape, whereas the fractured and tight types (Structures II and III) are controlled by the pore connection and fractures, respectively. For permeability, the main controlling factor of Structures I and III is porosity, whereas that of Structure II is the volume fraction of fractures. From the pore structure classification, combining pore structure parameters and porosity significantly improves the predictions of acoustic velocity and permeability, confirming that pore structure classification should be prioritized and determining the main controlling factors is critical for the improvement of acoustic velocity and permeability predictions. These results allow better exploration and development of reef-shoal carbonate reservoirs using seismic and acoustic log data.

中文翻译：

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塔里木盆地礁滩体碳酸盐岩孔隙结构及其对声速和渗透率的影响

实验与数值模拟相结合，研究孔隙结构对塔里木盆地礁滩体碳酸盐岩样品物性的影响。结果表明，孔隙结构参数与物理性质之间存在三种相关趋势，这与孔隙结构类型密切相关。缝洞型（构造Ⅰ）声速主要受孔隙度和孔隙形状影响，而裂缝型和致密型（构造Ⅱ、构造Ⅲ）分别受孔隙连通和裂缝控制。对于渗透率，构造Ⅰ和构造Ⅲ的主要控制因素是孔隙度，而构造Ⅱ的主要控制因素是裂缝的体积分数。从孔隙结构分类，将孔隙结构参数和孔隙率相结合显着提高了声速和渗透率的预测，确认孔隙结构分类应优先考虑，确定主要控制因素对于提高声速和渗透率预测至关重要。这些结果允许利用地震和声学测井数据更好地勘探和开发礁滩碳酸盐岩储层。