江汉盆地西南缘油气运移和成藏期次  

KEY EPISODES OF PETROLEUM MIGRATION AND ACCUMULATION IN THE SOUTHWEST EDGE OF JIANGHAN BASIN

作　　者：王雪玲[1] 刘中戎[1] 

机构地区：[1]中国石油化工股份有限公司中南分公司研究院,长沙410007

出　　处：《石油实验地质》2006年第2期142-146,共5页Petroleum Geology & Experiment

基　　金：国土资源部项目(P01014)

摘　　要：通过原油中含氮化合物的地球化学变化特征对比分析,指出江汉盆地西南缘的油气主运移方向是由北边的主生油凹陷(梅槐桥凹陷)向南(复兴场、采穴区带)运聚;利用流体包裹体、激光拉曼光谱和显微荧光分析等方法技术,对江汉盆地西南缘的成藏期次进行了研究,认为该区存在2期充注期:下第三系荆沙组沉积早期和下第三系潜江组沉积中、晚期。在此基础上,提出了3种成藏模式:源内—断鼻—相控油气成藏模式(自生自储)、源内—断鼻—断控油气成藏模式(下生上储)以及源边—断块—断裂和相控油气成藏模式。According to analysis of geochemical features of nitrogen compounds in crude oil, petroleum migration direction in the southwest edge of Jianghan Basin is from the main petroleum-generating depression （the Meihuaiqiao Depression） in the north to the Fuxinchang, Caixue Belt in the south. With techniques such as fluid inclusion, laser Raman spectrum and micro-fluorescence analysis, it is studied the episodes of oil pools formation. There are two episodes for petroleum to entrap： the first one is the early period of Jingsha Formation of Lower Tertiary, the second one is the medium-late period of Qianjiang Formation of Lower Tertiary. Three patterns to form oil-pools are put forward： the Inner Source- Nose-Like Fault-Facies-Controlled （self-generated and self-stored ）, the Inner Source-Nose-Like Fault- Fault-Controlled（generated in the lower section and stored in the upper section） and the Marginal Source-Faulted Block-Fracture and Facies-Controlled.

关 键 词：含氮化合物 流体包裹体 成藏期次 成藏模式 江汉盆地西南缘 

分 类 号：TE122.1[石油与天然气工程—油气勘探]