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高邮凹陷瓦庄东构造带以断鼻、断块油藏为主,断层封闭性是影响该块成藏的关键因素。本文利用断层两盘的岩性配置、断层两盘地层及断面的产状配置等5种影响因素对该区断层封闭性进行定性研究,建立定性判别标准;利用泥岩涂抹系数法、断层横向封闭系数法对断层封闭性进行定量研究,分别确定判别标准,并对该区的断层封闭性进行判别。在此基础上,利用模糊数学法对瓦庄东地区的断层封闭性进行综合研究,首先建立该区模糊评价断层封闭性的隶属度标准,然后选择加权平均法进行模糊计算,通过对比确定该区的模糊数学综合法适合本区。
The Wazhuangdong structural belt in Gaoyou sag is dominated by broken nose and fault block reservoirs, and fault sealing is the key factor affecting the accumulation of this block. In this paper, five kinds of influencing factors, such as the lithology configuration of two faults in the fault, the configuration of the two layers of the fault and the configuration of the section, are used to qualitatively study the fault sealing in this area, and the qualitative criteria are established. The mudstone smear coefficient method, The method of quantitative study of the fault seal, respectively, to determine the criteria for the determination of fault sealing in the area. On the basis of this, a comprehensive study on fault sealing in Wazhuangdong area is made by means of fuzzy mathematics. Firstly, the fuzzy evaluation criteria for the fault sealing of the area are established. Then, the weighted average method is adopted for fuzzy calculation. By contrast, The fuzzy mathematics synthesis method suits this area.