浅析断裂活动对火山岩油气藏形成的控制作用  

Brief review of control effect on the forming of volcanic hydrocarbon reservoirs caused by rifting activities .

作　　者：白新华[1] 

机构地区：[1]大庆石油学院勘探系

出　　处：《特种油气藏》1999年第1期6-9,共4页Special Oil & Gas Reservoirs

摘　　要：方法应用地质基本原理，结合济阳坳陷等地区，分析了断裂对火山活动及火山岩油气藏形成的控制作用。目的为寻找火山岩油气藏指明方向。结果断裂运动其强烈活动期是控制火山活动及火山岩分布的构造因素，也是控制同期火山岩喷发及生油层发育的重要因素；火山岩作为热载体可促使有机质向烃类转化，作为储集层以次生裂缝及溶蚀孔隙为主。因此，可以说断裂活动控制了火山岩油气藏的形成与分布。结论断裂运动是诱发火山活动的重要因素和通道，但盆地形成后期的火山活动不利于火山岩油气藏的形成。我国东部地区裂谷盆地形成的后期，其火山作用弱。Method By using basic geology principles, taking Jiyang depression and etc as examples, control effect of rifting on volcanic activities and forming of volcanic hydrocarbon reservoirs is analyzed. Purpose\ To guide the prospecting of volcanic hydrocarbon reservoirs. Result\ Rifting activities and their intensified acting period are not only structural elements in controlling volcanic activities and volcanic rock distribution, but an important factor in the development of oil source rock and volcanic eruption. Besides, as heat bearing body, volcanic rock may stimulate the transforming of organic matters into hydrocarbon. Further, secondary fractures and karst pores distribute throughout the volcanic accumulating formation. In a word, rifting activity is control factor of the forming and distribution of volcanic hydrocarbon reservoir. Conclusion\ Rifting activities are critical factors and channels of inducing volcanic activities, but these activities in late period of basin forming are not favorable for the forming of volcanic hydrocarbon reservoir. Rift basins in East China, whose volcanic effects are weak in late forming period, are favorable areas in prospecting volcanic hydrocarbon reservoir.

关 键 词：断裂 火山岩 油气藏成因 石油生成 

分 类 号：P618.130.1[天文地球—矿床学] P618.130.2[天文地球—地质学]