岩浆活动与油气成藏地质条件的关系

结合国内外众多含油气盆地中岩浆活动对油气生储盖及圈闭等条件的影响，探讨了岩浆活动与油气成藏地质条件的关系。岩浆活动伴随的高热流可以提高盆地古地温，加速烃源岩演化，亦将使与岩浆岩毗邻的烃源岩达到高成熟或过成熟；岩浆岩及其围岩蚀变带可成为良好的特殊储层；岩浆活动还可形成一些特殊类型的圈闭。另一方面，若岩浆活动时间与油气生成、运移与聚集时间不匹配，将对油气藏的形成与保存起较大的破坏作用。

THE MAGMA ACTIVITY'S INFLUENCE ON CONDITIONS FORMING OIL AND GAS ACCUMULATION

Based on these conditions of generation-migration-accumulat of petroleum and trap,the relationship between magma activity and oil and gas accumulation is researched. Thehigh thermal fluid which was brought during the magma activity might increase the paleogeothermal gradient, and accelerate the thermel evolution of source rocks. However, thematurity in source rocks surrounding the magma would be very high or over. The magmaand its alteration belts could become good reservoirs. The magma activity could create someespecial traps. On the other hand, if the time of the magma activity did not correspond withthe period of generation-migration-accumation of petroleum, the oil and gas pools would bedestroyed very largy.