乌尔逊凹陷南二段南北油气成藏条件差异性分析  

Analysis of difference in oil or gas accumulation conditions of K1n2 between the south and north of Wuerxun depression

作　　者：牟敦山[1] 徐淑艳[2] 

机构地区：[1]大庆石油学院地球科学学院,黑龙江大庆163318 [2]大庆油田有限责任公司第二采油厂,黑龙江大庆163000

出　　处：《大庆石油学院学报》2004年第3期86-87,共2页Journal of Daqing Petroleum Institute

基　　金：国家重点基础研究资助项目 ( 2 0 0 1CB2 0 910 4)

摘　　要：分析了乌尔逊凹陷南二段油气成藏条件 ,结果表明 :乌尔逊凹陷南二段南北部在源岩有机质丰度、盖源质量空间匹配关系、断层侧向封闭性和油气运移形式上存在着明显的差异性 ;乌尔逊凹陷北部南一段源岩有机质丰度、南二段和大一段盖源质量空间匹配关系、南二段断层侧向封闭性和油气运移形式均好于南部 ,导致乌尔逊凹陷北部南二段油气供给、运聚及保存条件均优于南部 .这即是造成乌尔逊凹陷北部南二段油气显示好于南部的根本原因 .Through the analysis of oil or gas accumulation conditions of K_1n_2 in Wuerxun depression, this paper points out that there are the differences in organic matter abundance of source rock, the quality space matching relation between caprock and source rock, the lateral seal of faults and oil or gas migration form of K_1n_2 between the south and north of Wuerxun depression. The organic matter abundance of source rock of K_1n_1, the lateral seal of faults of K_1n_2 and the oil or gas migration form of K_1n_2 in the north of Wuerxun depression are better than that in the south of Wuerxun depression. This is the essential cause that the oil or gas show of K_1n_2 in the north of Wuerxun depression is better than that in the south of Wuerxun depression.

关 键 词：乌尔逊凹陷 南二段 油气 成藏条件 差异性 

分 类 号：TE122.1[石油与天然气工程—油气勘探]