构造作用对油气保存影响的研究进展——以上扬子地区为例

以往关于构造作用与油气保存关系的研究多侧重于构造运动所导致的破坏作用,而忽视了其对油气保存的建设作用。该文以上扬子地区为例,从正、反两方面讨论了构造运动对油气保存的影响,并着重剖析了构造作用对油气保存的破坏与建设作用的动态转化关系。这种动态转化关系在空间上表现为从造山带至前陆盖层滑脱带,保存条件由差变好,且在盖层滑脱带,其深层构造的保存条件要优于浅层构造;在时间上的动态转化则指在多期构造作用改造的地区,控制圈闭形成的主控断层的性质具有充注断层与散逸断层相互转化的现象。

Primary discussion on relationship between hydrocarbon preservation and tectonic movement-a case study in upper Yangtze region

The previous studies of the relationship between tectonic movement and hydrocarbon preservation mainly focused on the destructive functions of tectonic movement rather than the constructive functions.Taking the upper Yangtze region as an example,it was discussed in this paper the influence of tectonic movement on hydrocarbon preservation from both destructive and constructive aspects.The dynamic transformation from one function to another was also studied.In space distribution,from oroge-nic belts to detachment belts,hydrocarbon preservation conditions were improved.As to detachment belts,preservation conditions of the infrastructures were better than those of the superstructures.In the regions which had experienced stages of tectonic movements,the main faults forming traps might change from filling faults to escaping faults,and vice versa.