歧南地区坡折带特征及对沉积作用的控制  

Characteristics of the Shahejie Formation break zone in Qinan area and their control over deposition

作　　者：朱正平[1] 袁淑琴[2] 王书香[2] 潘仁芳[1] 么景臣 

机构地区：[1]长江大学,湖北武汉430100 [2]中油大港油田分公司,天津300280 [3]哈里伯顿国际公司北京办事处,北京100004

出　　处：《特种油气藏》2014年第2期28-31,152,共4页Special Oil & Gas Reservoirs

基　　金：中国石油天然气集团公司重大科技专项"歧口凹陷大油气田形成条件及富集规律研究"(2008E-0601)

摘　　要：以渤海湾盆地歧南地区沙河街组构造复杂、断裂发育等地质特征为背景,以进一步认识沉积砂体分布规律为目的,进行坡折带对沉积作用控制研究。在分析区域地质背景的基础上,结合地震、沉积等相关资料,将歧南地区古近系沙河街组坡折带按成因划分为4种类型。研究发现,坡折带对沉积的控制作用主要表现在3个方面:坡折带控制沉积物的供给,坡折带控制沉积相展布,坡折带控制沉积砂体的富集。该研究为砂体预测和岩性油气藏勘探提供了地质依据。Taking the geologic features of the Shahejie structure in Qinan area,Bohai gulf basin as the background such as complicated structure and well- developed fault,a study is made on the control of break zone over deposition in order to further understand the rules of sedimentary sand body distribution. Based on the analysis of regional geologic background,the Eogene Shahejie Formation break zone is divided into four types according to genesis in combination with seismic and deposition information and the relevant features are described. It is found from the study that the control of break zone over deposition can be shown in three aspects: deposit supply,sedimentary facies spreading and the enrichment of sedimentary sand body. The study provides some basis as a reference for the prediction of sand body and exploration of lithologic oil and gas reservoirs.

关 键 词：坡折带类型 控沉作用 沙河街组 歧南地区 歧口凹陷 

分 类 号：TE121[石油与天然气工程—油气勘探]