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陇东地区长7致密油储层微观孔喉结构 分形特征
引用本文:白瑞婷,李治平,王慧玲,刘晓燕,韦青,李洪.陇东地区长7致密油储层微观孔喉结构 分形特征[J].科学技术与工程,2016,16(5):54-59.
作者姓名:白瑞婷  李治平  王慧玲  刘晓燕  韦青  李洪
作者单位:中国地质大学(北京),中国地质大学(北京),中国石油天然气股份有限公司长庆油田分公司(勘探开发研究院),中国石油天然气股份有限公司长庆油田分公司(勘探开发研究院),中国地质大学(北京),中国地质大学(北京)
基金项目:国家科技重大专项课题“新一代油藏数值模拟软件”(编号:2011ZX05009-006);中国石油长庆油田分公司科学研究与技术开发项目“致密油储层定量评价技术研究”(编号:技2014-18)联合资助.
摘    要:微观孔隙结构研究对低渗、超低渗或致密砂岩油藏的渗流机理认识及开发有着极其重要的意义。利用鄂尔多斯盆地陇东地区36口井40块岩样的压汞资料,研究了长7储层微观孔隙结构的分形特征。研究发现,储层孔隙结构存在单一分形和多段分形特征。不同孔径范围具有不同的分形维数。不同的分形特征反映微观孔隙结构组合特征也是不同的,揭示了研究区储层孔隙结构的复杂性。表征微观孔隙结构的参数与分形维数存在良好的线性关系,表明可以用分形维数表征储层微观孔隙结构的非均质性。

关 键 词:孔喉结构  分形维数  储层非均质性  单一分形  多段分形
收稿时间:2015/10/27 0:00:00
修稿时间:2015/10/27 0:00:00

Fractal nature of microscopic pore-throat structure in Chang 7 tight oil reservoir of Longdong area
BAI Rui-ting;LI Zhi-ping;WANG Hui-ling;LIU Xiao-yan;WEI Qing;LI Hong.Fractal nature of microscopic pore-throat structure in Chang 7 tight oil reservoir of Longdong area[J].Science Technology and Engineering,2016,16(5):54-59.
Authors:BAI Rui-ting;LI Zhi-ping;WANG Hui-ling;LIU Xiao-yan;WEI Qing;LI Hong
Institution:BAI Rui-ting;LI Zhi-ping;WANG Hui-ling;LIU Xiao-yan;WEI Qing;LI Hong;China University of Geosciences (Beijing),Beijing Key Laboratory of Unconventional Natural Gas Geology Evaluation and Development Engineering,School of Energy and Resource;National Engineering Laboratory for Exploration and Development of Low-Permeability Oil & Gas Fields;Research Institute of Petroleum Exploration & Development;
Abstract:It is extremely important to study micro-pore structure for the understanding of the mechanism of seepage and oil exploitation in low permeability and ultra-low permeability reservoir. And the fractal characteristics of the pore structure are studied according to the capillary pressure analysis data from 40 core samples in 36 wells of Longdong area of ordos basin. The study found that there are both single and multistage fractal characteristics in micro-pore structure. There are different fractal dimension in diameter range. The fractal characteristics of the characteristics of the micro-pore structure combination is also different, which reveals the complexity of the reservoir pore structure. Reservoir characterization of micro-pore structure parameters have a good linear relationship with the fractal dimension , thus ,it can be seen that the fractal dimension can be used to characterize microscopic heterogeneity of pore structure in the reservoir.
Keywords:pore-throat structure  fractal dimension  reservoir heterogeneity  single fractal  multistage fractal  
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