郯庐中段走滑断裂与新滩地区油气成藏关系  

RELATIONSHIP BETWEEN MIDDLE TANLU STRIKE SLIP FAULT BELT AND OIL-AND-GAS ACCUMULATION IN XINTAN AREA

作　　者：彭存仓[1,2] 张博[2] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]中国石油化工股份有限公司胜利油田分公司孤东采油厂,山东东营257237

出　　处：《石油实验地质》2009年第3期227-230,共4页Petroleum Geology & Experiment

摘　　要：郯庐断裂带是一条北东向主干断裂带,是地壳断块差异运动的接合带。该断裂带经历了多期构造运动,不仅是一条以剪切运动为主的深断裂带,而且是一条继承着新构造运动方式、以左旋逆推为主的走滑活动断裂带。郯庐断裂带幕次性活动,控制走滑断裂带的发育和空间展布,而走滑断裂又是油气运移、聚集、成藏的场所。新滩地区处于郯庐断裂带中断,发育多条北北东和北东向雁行式走滑断裂。北北东方向的主走滑断裂主要沟通油源,是油气垂直运移的优势通道;而北东方向的派生断裂改变油气运移方向,影响油气的二次运移分配,即,主断裂控制油气运移层位及赋存深度,派生断裂控制油气平面分布及延伸距离。油气主要在走滑断裂带附近聚集成藏,形成构造、构造—岩性油气藏。Tanlu fault belt is a NE oriented main fault belt where different crustal blocks meet. The belt has ex perienced stages of tectonic movements. It is not only a deep fault mainly controlled by shearing movements, but also an active slip fault rotating left-hand and successing a new way of structure movement. Stages of move- ments of Tanlu fault belt have controlled development and distribution strike-slip fault belt, where hydrocarbon migrates and accumulates. Xintan locates in the middle of Tanlu fault belt. Some NNE and NE oriented flyinggeese-style strike-slip faults generate. The NNE oriented main strike-slip faults lead to oil source and are favorable paths for vertical migration. The NE oriented induced faults change hydrocarbon migration direction and in- fluence secondary migration. In other words, main faults control migration path and depth, and induced faults control plane distribution and extension distance. Hydrocarbon mainly accumulates along strike-slip faults and forms tectonic-lithologic reservoirs.

关 键 词：走滑断裂 幕次活动 油气运聚 新滩地区 郯庐断裂 

分 类 号：TE122.3[石油与天然气工程—油气勘探]