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为了评价徐家围子断陷火山岩圈闭的含气性 ,综合考虑了火山岩圈闭的各种成藏条件的影响 ,利用灰色关联方法建立了火山岩圈闭含气性的综合评价方法 ;应用该方法 ,根据徐家围子断陷 31个火山岩圈闭成藏条件特征 ,综合评价了该断陷火山岩圈闭的含气性 ;结果表明 ,Ⅰ类火山岩圈闭 18个 ,Ⅱ类火山岩圈闭 9个 ,Ⅲ类火山岩圈闭 4个 ;研究结果对松辽盆地北部深层天然气勘探具有参考价值 .
In order to evaluate the gas-bearing volcanic trap of the Xujiaweizi faulted-down volcano, the comprehensive evaluation method of volcanic trap gas content was established by considering the influence of various reservoir forming conditions on the volcanic trap. By using this method According to the reservoir forming conditions of 31 volcanic rocks trapped in the Xujiaweizi Fault Depression, the gas content of the volcanic trap in the fault depression was comprehensively evaluated. The results show that there are 18 volcanic traps in Group Ⅰ and 9 volcanic traps in Class Ⅱ, Ⅲ type volcanic traps. The results of this study have reference value for deep natural gas exploration in northern Songliao Basin.