松辽盆地多边形断层的发现及其成因  

DISCOVERY AND ORIGIN RESEARCHES OF THE POLYGONAL FAULTS IN SONGLIAO BASIN

作　　者：杨懋新[1] 宋俊如[2] 戴跃进[3] 王革[3] 

机构地区：[1]大庆钻探工程公司地球物理勘探一公司,黑龙江大庆163357 [2]中国地质大学能源学院,北京100083 [3]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2012年第1期1-5,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气集团公司项目“海塔及大庆长垣复杂油气藏地震勘探技术研究及应用”（2008D-1903）资助.

摘　　要：多边形断层是一种非构造成因断层，一般发育在深水环境中，具有断距小、延伸长度短、展布方向复杂的特点，我国关手这类断层的研究仅限于一些深海盆地中。近年来，通过三维地震解释，在松辽盆地嫩江组发现了多边形断层，这也是首次在中国东部陆相盆地中发现多边形断层。通过三维地震成果描述了该断层（系）的剖面和平面特征，同时结合前人研究成果，得出了采用超压脱水收缩成因模式解释松辽盆地嫩江组多边形断层的成因，阐述了多边形断层发现的意义。Polygonal fault ordinarily developed in deep water environment is a non-structured new fault, which is characterized by short fault throw, limited extended length and complex through-going. The similar studies of this kind of fault are only confined in deep sea basins in China. Recently, with the help of 3D seismic interpretation, the polygonal faults were discovered in Nenjiang Formation of Songliao Basin. It is the first discovery of polygonal fault in the eastern continental basins of China. By means of 3 D seismic achievements, the characteristics of profile and plane of the faults are described. In the meantime, integrating with the previous research results, the forming origins of the faults are obtained in Nenjiang Formation in Songliao basin by the origin model interpretations of overpressure syneresis. And furthermore the signifieances for the discovery are discussed.

关 键 词：多边形断层 松辽盆地 嫩江组 超压脱水收缩 套损 

分 类 号：TE121.3[石油与天然气工程—油气勘探]