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圈闭评价的灰色关联分析就是研究实际圈闭与理想圈闭的近似程度，通过对比分析，赋于成藏因素以不同的权值，从而定量评价圈闭的成藏条件。江汉盆地西南缘圈闭的综合评价结果表明：谢凤桥构造为最有利构造；南岗１号、２号、３号断鼻，采穴断鼻及丁家湖断块为较有利圈闭，尤其是采穴和丁家湖构造，应是今后的主要勘探对象。
The gray relational analysis of trapping evaluation is to study the approximate degree of actual traps and ideal traps. Through comparative analysis, different accumulation values are assigned to the reservoirs, so as to quantitatively evaluate trapping accumulation conditions. The comprehensive evaluation of the traps in the southwestern margin of the Jianghan Basin shows that the Xiefengqiao structure is the most favorable structure; the Nanshan No.1, No.2 and No.3 fault bends, the caving fault and the Dingjiahu fault block are more favorable traps, especially the mining Cave and Dingjiahu structure should be the main exploration targets in the future.