史家畔地区裂缝研究

Study on Fissures in Shijiapan Oilfield

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。

The fissure is a geological interface of the losing combining power,and a fault without obvious displacement between rocks.It is not only the reservoir space of oil and gas,but also the seepage channel;therefore,it has always been important to study the fissure in the exploration and production of oil and gas.Shijiapan oilfield,which is located in the east of Erdos basin,is a tight sandstone reservoir with low porosity,low pressure,low permeability,which brings great difficulty to explore.Because the presence of natural fissure is significant for economic exploration in tight sandstone reservoir,to study the status and distribution of the fracture development has a positive instructional significance for reservoir fracturing reconstruction and water flooding development.