|本期目录/Table of Contents|

[1]付广,胡欣蕾.利用断层岩泥质含量判断断层垂向封闭性的方法及其应用[J].地球科学与环境学报,2016,38(05):660-667.
　FU Guang,HU Xin-lei.Method of Fault Vertical Sealing Ability Judged by the Mudstone Content of Fault-rock and Its Application[J].Journal of Earth Sciences and Environment,2016,38(05):660-667.
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利用断层岩泥质含量判断断层垂向封闭性的方法及其应用(PDF)
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第38卷
期数:
2016年第05期
页码:
660-667
栏目:
基础地质与矿产地质
出版日期:
2016-09-15

文章信息/Info

Title:
Method of Fault Vertical Sealing Ability Judged by the Mudstone Content of Fault-rock and Its Application
文章编号:
1672-6561(2016)05-0660-08
作者:
付广; 胡欣蕾
东北石油大学 地球科学学院，黑龙江 大庆 163318
Author(s):
FU Guang;  HU Xin-lei
School of Earth Sciences, Northeast Petroleum University, Daqing 163318, Heilongjiang, China
关键词:
垂向封闭性; 断层; 泥质含量; 压实成岩时间; 泥岩盖层; 烃源岩; 南堡凹陷
Keywords:
vertical sealing ability;  fault;  mudstone content;  diagenetic time;  mudstone caprock;  source rock;  Nanpu depression
分类号:
P618.13;TE122
DOI:
-
文献标志码:
A
摘要:
为了简便地判断断层垂向封闭性，在断层垂向封闭机理及影响因素研究的基础上，通过比较断层岩排替压力与下伏储层岩石排替压力的相对大小，建立了一套利用断层岩泥质含量判断断层垂向封闭性的方法，并将其应用于渤海湾盆地南堡凹陷南堡5号构造f1、f2、f3、f4、f5等5条断裂在东二段泥岩盖层内的垂向封闭性研究中。结果表明：f1、f2、f4等3条断裂断层岩泥质含量均大于其在东二段泥岩盖层内垂向封闭所需最小的泥质含量，断层表现为垂向封闭；但f1断裂位于南堡凹陷沙三段和沙一段—东三段烃源岩分布范围之外，无油气供给，f2断裂受断层与盖层配置关系的影响，油气沿断裂向上运移，从而无油气聚集；f3、f5两条断裂断层岩泥质含量均小于其在东二段泥岩盖层内垂向封闭所需最小的泥质含量，断层表现为垂向开启，即使断裂沟通了烃源岩与储层，油气也将穿过盖层继续向上运移，不利于油气富集。这一评价结果与南堡凹陷南堡5号构造东二段下部已发现的油气分布有着较好的吻合关系，表明该方法用于简便地判断断层垂向封闭性是可行的。
Abstract:
In order to judge the fault vertical sealing ability simply, based on the mechanism and influence factors of fault vertical sealing, the displacement pressures of faultrock and underlying reservoir rock were compared, and a set of convenient prediction method of fault vertical sealing ability by using the mudstone content of faultrock was established, and then the method was applied to study the vertical sealing ability of faults f1, f2, f3, f4, f5 in mudstone caprock of the second member of Dongying Formation of No.5 structure of Nanpu depression, Bohai Bay Basin. The results show that the mudstone contents of fault-rock of faults f1, f2, f4 are larger than the minimum of mudstone content required by vertical sealing of the three faults in mudstone caprock of the second member of Dongying Formation, so they are sealed in vertical; while the fault f1 is located outside the distribution range of source rocks from the third member of Shahejie Formation and the first member of Shahejie Formation-the third member of Dongying Formation,and the fault f2 effected by the configuration of fault and caprock, petroleum migrates along the fault, so that there is no petroleum accumulation whether the faults are sealed or not; the mudstone contents of fault-rock of faults f3, f5 are lower than the minimum of mudstone contents required by vertical sealing of the two faults in mudstone caprock of the second member of Dongying Formation, so they are open in vertical; though the faults f3, f5 connect the source rock and reservoir, petroleum would move upward through the caprock, and it is not favorable for petroleum accumulation. The evaluation has a good relation with currently discovered petroleum distribution underneath the second member of Dongying Formation of No.5 structure of Nanpu Depression, so that the method is favorable to simply judge the fault vertical sealing ability.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-04-26
基金项目:国家自然科学基金项目(41372153)
作者简介:付广(1962-),男,满族,辽宁新宾人,教授,博士研究生导师,工学博士,E-mail:fuguang2008@126.com。
更新日期/Last Update: 2016-09-30