KEY EPISODES OF PETROLEUM MIGRATION AND ACCUMULATION IN THE SOUTHWEST EDGE OF JIANGHAN BASIN
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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。Abstract: 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.
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[1] 卢明国.江汉盆地江陵凹陷油气成藏期分析[J].石油实验地质,2004,26(1):28～30 [2] 胡见义,黄第藩.中国陆相石油地质理论基础[M].北京:石油工业出版社,1991 [3] 王平,李纪辅,李幼琼.复杂断块油田详探与开发[M].北京:石油工业出版社,1994.24～26 [4] 付广,刘洪霞,段海风.断层不同输导通道封闭机理及其研究方法[J].石油实验地质,2005(4):404～408 [5] 付广,曹成润,陈章明.泥岩涂抹系数及其在断层侧向封闭性研究中的应用[J].石油勘探与开发,1996,23(6):38～41 [6] 王志欣,信荃麟.关于地下断层封闭性的讨论——以东营凹陷为例[J].高校地质学报,1997,3(3):293～300 [7] 付广,孟庆芬.断层封闭性影响因素的理论分析[J].天然气地球科学,2002,13(3):40～44 [8] 史文东.断裂带封闭势研究及应用[J].油气地质与采收率,2004,11(4):16～18 [9] 秦建中,钱志浩,曹寅等.油气地球化学新技术新方法[J].石油实验地质,2005,27(5):519～528 [10] 侯启军,冯子辉,邹玉良.松辽盆地齐家古龙凹陷油气成藏期次研究[J].石油实验地质,2005(4):390～394 [11] 赵力彬,黄志龙,高岗等.关于用包裹体研究油气成藏期次问题的探讨[J].油气地质与采收率,2005,12(6):6～9 [12] 侯建国,任丽华,董春梅.有机包裹体技术在油气运移与聚集中的应用研究[J].石油实验地质,2005(4):409～413 -
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