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大庆龙虎泡油田是大庆外围的一个特低渗油田之一，具有中孔低渗的特征，主要产层为高台子油层的高三、高四组，普遍无自然产能，在钻井、完井和其它各种作业过程中容易受到伤害．据此通过薄片分析、Ｘ—衍射、压汞、铸体分析和室内各种静态伤害试验研究了油层的储集空间、孔隙结构、敏感性等基本特征，分析了油层污染的主要因素及伤害机理．研究表明，水敏和酸敏效应是该油层主要损害因素，从而为油层保护提供了必要的科学依据．
The Daqing Longhu foam oil field is one of the ultra-low permeability oilfields in the periphery of Daqing. It has the characteristics of mesopore low permeability. The main production layer is the third and fourth member of Gaotaizi oil formation, generally without any natural productivity. In drilling, well completion and Other various operations vulnerable to injury. Based on this, the basic characteristics of oil reservoir such as reservoir space, pore structure and sensitivity were studied by means of lamellar analysis, X-ray diffraction, mercury intrusion, casting analysis and various indoor static damage tests. The main factors of oil contamination and damage mechanism . The results show that water sensitivity and acid sensitivity are the main damage factors of this oil reservoir, thus providing the necessary scientific basis for reservoir protection.