松辽盆地西部斜坡区北段坳陷层构造与油气成藏关系  

RELATION BETWEEN THE STRATIGRAPHIC STRUCTURE AND HYDROCARBON RESERVOIR FORMATION FOR THE NORTH DEPRESSION OF NORTH SLOPE OF SONGLIAO BASIN

作　　者：于丹[1] 

机构地区：[1]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6期6-10,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：博士学科点专项基金（20060220002）、国家科技重大专项（2008ZX05007-003）.

摘　　要：松辽盆地西部斜坡区北段坳陷层发育5个次级近北东向构造带，自东向西依次分别为白音诺勒构造带、二站构造带、阿拉新构造带、江桥鼻状构造带及西部超覆地层尖灭带。构造演化划分为3个阶段：斜坡发育雏形阶段、斜坡继承性发育阶段、斜坡抬升稳定阶段。发育5种构造样式，分别为反向正断层控制的鼻状构造或背斜、正断层控制的断块构造、逆冲走滑断层控制的鼻状构造、基底凸起和断块继承性发育的鼻状构造或背斜、地层超覆构造。构造带控制油气聚集带形成，构造样式控制油气藏类型，构造长轴展布方向与砂体的展布共同控制油气富集程度。Five sub-class near-NE structure belts are developed from east to west in the depressed layers of the northern section of West Slope of Songliao Basin ： Baiyinnuole, Erzhan, Alaxin nose, Jiangqiao and lithologic pin- chout belt. Structural evolvement can be divided into three phases： slope embryo development phase, slope succes- sive development phase, slope risen and stabilized phase. Five kinds of structural styles are developed： nose-like structure or anticline controlled by reverse normal faults, fault block structure dominated by normal faults, nose structure determined by inverse slip faults, successively-developed nose structure or anticline controlled by basal heave and fault blocks and stratigraphic overlap structure. The formation of oil and gas enriched zones is controlled by the structural belts, the types of oil and gas reservoir are determined by the structural styles, the enriched degree of oil and gas is mutually dominated by the spread directions of the long tectonic axis and the distribution of the sand bodies.

关 键 词：构造带 构造样式 油气成藏 西部斜坡区北段 松辽盆地 

分 类 号：TE122.2[石油与天然气工程—油气勘探]