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根据岩心描述、薄片观察、X CT扫描以及钻井、测井等资料 ,研究了酒西盆地青西坳陷柳沟庄—窟窿山油藏裂缝性储集层的类型及特征 ,分析了控制裂缝发育的地质因素及裂缝对油气的控制作用 ,认为储集层裂缝有 3种基本类型 ,即构造裂缝、构造溶蚀缝和饼状破裂 ,主要受构造应力场及构造位置等因素的控制。根据裂缝形态、充填特征及其相互关系 ,裂缝的形成主要有 3个期次 ,其中喜马拉雅运动晚期形成的第三期裂缝对油气运移和聚集最有效。研究结果表明 ,裂缝是柳沟庄—窟窿山油藏主要的储集空间和控制油气富集的因素。图 6表 2参 6
According to core description, thin slice observation, X-ray CT scan, well drilling and logging data, the types and characteristics of fractured reservoirs in Liugouzhuang-Kulongshan reservoir in Qingxi depression, The geological factors of fractures and their control on oil and gas show that there are three basic types of reservoir fractures: structural fractures, eroded fractures and pie-shaped fractures, which are mainly controlled by tectonic stress field and structural position. According to the fracture morphology, filling characteristics and their interrelationships, the formation of fractures is mainly composed of three periods, of which the third-stage fractures formed in the late Himalayan movement are most effective for hydrocarbon migration and accumulation. The results show that the fractures are the main reservoir space and the factors controlling the hydrocarbon accumulation in the Liugouzhuang-Kulongshan reservoir. Figure 6 Table 2 参 6