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大港滩海区沙一段下部水力破裂特征模拟实验
引用本文:马锋,刘立,钟建华,马瑞.大港滩海区沙一段下部水力破裂特征模拟实验[J].石油学报,2006,27(6):60-64,69.
作者姓名:马锋  刘立  钟建华  马瑞
作者单位:1. 中国石油大学资源信息学院 山东东营 257061;2. 中国科学院广州地球化学研究所 广东广州 510640;3. 吉林大学地球科学学院 吉林长春 130026
基金项目:国家自然科学基金;中国石油天然气集团公司资助项目
摘    要:通过对大港滩海区沙一段下部岩心观察和薄片分析,识别出水力破裂角砾、砂岩脉、水力破裂裂缝及活化同沉积裂缝4种水力破裂作用产物,水力破裂角砾之间具有可拼合性,脉体具有明显流体作用痕迹;本区水力破裂发生于欠压实带周围的“壳”中。利用三轴实验系统,对泥晶灰岩(泥质粉砂岩)—砂岩复合试件进行了水力破裂实验。在实验过程中,模拟超压系统“壳”的低渗透岩石—泥晶灰岩(粉砂质泥岩)发生了破裂,而模拟超压系统“欠压实带”的高渗透砂岩却未发生破裂。该实验结果与理论分析和水力破裂裂缝露头特征具有明显的可比性。

关 键 词:大港滩海区  沙一段  水力破裂  压实作用  岩石学特征  物理模拟  
文章编号:0253-2697(2006)06-0060-05
收稿时间:2005-11-20
修稿时间:2005-11-202006-01-12

Modeling on characteristics of hydraulic fracturing in the lower first member of Shahejie Formation in Dagang beach
Ma Feng,Liu Li,Zhong Jianhua,Ma Rui.Modeling on characteristics of hydraulic fracturing in the lower first member of Shahejie Formation in Dagang beach[J].Acta Petrolei Sinica,2006,27(6):60-64,69.
Authors:Ma Feng  Liu Li  Zhong Jianhua  Ma Rui
Affiliation:1. Faculty of Geo-resources and Information, China University of Petroleum, Dongying 257061, China;2. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;3. College of Earth Sciences, Jilin University, China
Abstract:The hydraulic fracturing breccia,sandstone vein,hydraulic fracture and activation synsedimentary fracture were recognized as the hydraulic fracturing products in the lower first member of Shahejie Formation in Dagang beach by observation of core and microscope.Hydraulic fracturing breccia can be joggled joint and the veins have clear fluid evidence.It is found that the fractures were developed in the crust around the uncompacted belt.Hydraulic fracturing experiments were conducted by using composite samples consisting of micrite(muddy siltstone) and sandstone.The relationship between hydraulic fracturing and rock type in sedimentary basin was analyzed.The low-permeability rocks and micrite(muddy siltstone) for modeling the crust of the overpressure system were broken under the action of overpressure fluid,while the sandstone for modeling the uncompacted belt of overpressure system was not broken.The experimental results coincide with the theoretical analysis and field observation of hydraulic fracturing made by others.
Keywords:Dagang beach  the first member of Shahejie Formation  hydraulic fracturing  compaction  lithologic features  physical modeling
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