Ansai oil field in Ordos basin is a ultra low permeability reservoir with natural and induced fractures, which caused serious lateral heterogeneity of permeability in the reservoir.
鄂尔多斯盆地安塞特低渗透油田由于存在天然裂缝或人工压裂裂缝，造成了储集层平面渗透率的方向非均质性。
Ansai oil field is characterized by low Permeability, low pressure, low output and adverse natural conditions, so surface engineering construction of Ansal oil field has great difficulty.
本文论述了安塞油田主要特点是：低渗、低压、低产，自然环境恶劣，油田地工程建设难度大。
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