| 大民屯凹陷古潜山裂缝特征及控制因素 |
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| 引用本文： | 赵立旻.大民屯凹陷古潜山裂缝特征及控制因素[J].地质科技情报,2007,26(4):37-41. |
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| 作者姓名： | 赵立旻 |
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| 作者单位： | 中国石油天然气股份有限公司辽河油田勘探开发研究院,辽宁,盘锦,124010 |
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| 基金项目： | 中国石油天然气股份有限公司重点科技攻关课题 |
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| 摘 要： | 垂直缝和高角度斜交缝是辽河盆地大民屯凹陷太古宇和元古宇古潜山储层的重要储集空间.裂缝的形成和演化受燕山期的挤压构造应力场以及喜马拉雅早期的右旋张扭应力场和晚期的右行走滑构造应力场控制.对应于构造期次,可将裂缝体系分为早、中、晚3个形成期.早期裂缝体系以压性裂缝为主,中期以张性裂缝为主,晚期以张-剪性裂缝为标志.裂缝的性质和发育程度受构造应力场和岩性控制,超压流体有利于裂缝的开启.
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| 关 键 词： | 古潜山 裂缝 形成机制 控制因素 |
| 文章编号： | 1000-7849（2007）04-0037-05 |
| 修稿时间： | 2006-07-22 |
Characteristics and Controlling Factors of Fracture in Buried Hill in Damintun Sag,Liaohe Basin |
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| ZHAO Li-min.Characteristics and Controlling Factors of Fracture in Buried Hill in Damintun Sag,Liaohe Basin[J].Geological Science and Technology Information,2007,26(4):37-41. |
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| Authors: | ZHAO Li-min |
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| Institution: | Exploration and Development Institute ,Liaohe Oil field Company, PetroChina , Panjin Liaoning 124010,China |
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| Abstract: | Fractures in the buried hill reservoir of Archeozoic and Proterozoic in Damintun Sag,Liaohe basin,are mainly vertical fractures and high angle oblique fractures,which are also important reservoir space.The formation and evolution of the fractures were controlled by three stages in two different phases of structural field:the compressive stress field during Yanshan period,dextral transtensional stress field during Early Himalaya period,and dextral strike-slip stresses field during Late Himalaya period.According to tectonic periods,fracture system can be divided into three periods,early,middle and late forming periods.In the early fracture period,the fractures in the system are mainly the compressional fractures;the middle period fractures mainly are extensional fractures;in the late period,the fractures are characterized by the extensional-shear fractures.The properties and the degree of the development are controlled by structural stress field and lithology and overpressure fluid is favorable for the opening of fractures. |
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| Keywords: | buried hill fracture mechanism controlling factor |
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