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裂缝是岩石中失去结合力的一种地质界面,是岩石中没有明显位移的断裂,它既是油气储集空间,也是渗流通道,因此,对裂缝的研究一直是油气勘探开发中的一项重要内容。史家畔油田位于鄂尔多斯盆地东部属于致密砂岩油藏,具有低孔、低压、低渗特点,给开发带来了相当大的难度。天然裂缝的存在对致密砂岩油藏经济开发意义重大,研究其裂缝发育状况及分布规律对储层压裂改造及注水开发具有积极的指导意义。
Crack is a kind of geologic interface losing the binding force in rock. It is a fracture with no obvious displacement in rock. It is both oil and gas reservoir space and percolation channel. Therefore, the study of fracture has been an important content in oil and gas exploration and development . Located in the east of the Ordos Basin, the Shijiapu Oilfield is a tight sandstone reservoir with low pore, low pressure and low permeability characteristics, which brings considerable difficulties for development. The existence of natural fractures is of great significance to the economic development of tight sandstone reservoirs. It is of great significance to study the development and distribution of fractures on the fracturing and waterflooding of reservoirs.