摘要
通过对研究区地震、测井资料的研究,在对老河口油田老451断块的主要断裂的要素特征进行统计的基础上,分析了该地区断裂的平面和剖面组合方式,并讨论了该断块的断裂形成机制。这对于认识研究区的构造演化特征和构造控油特征具有重要的意义。在东营运动期,区域左旋张扭应力场作用下,研究区形成大量具有同生断层性质的正断层。东营运动晚期,济阳坳陷应力场发生了反转由左旋张扭转化为右旋压扭,诱发研究区断层上盘地层沿陡坡向下滑动,形成断层目前的断裂格局。
By the research on the seismic data and logging data, on the base of factor statistics analysis of the L451 fault block of the Laohekou Oilfield, this thesis gave an analysis to the place and section combination mode, and the formational mechanism of this fault block was discussed. It has important significance for understanding the characteristics of tectonic evolution and control characteristics of structures and tectonics over hydrocarbon accu- mulation and distribution. On the action of the regional levorota- tion transtention stress field in Dongying movement, there are large amounts of normal faults with the properties of contempora- neous fault. The stress field of the Jiyang Deperssion has inversed from levorotation transtention to right lateral. And the hanging wall of the target fault slipped down alone the steep slope in late Dongying movement. The present faulted pattern formed then.
出处
《西部探矿工程》
CAS
2010年第2期41-44,共4页
West-China Exploration Engineering
关键词
断裂特征
形成机制
断裂组合方式
fracture characteristics
formation mechanism
combi- nation mode of faults