不同于常规砂岩储层，致密砂岩储层孔隙结构更为复杂，单靠孔隙度或渗透率等单一参数难以有效划分储层。由于单参数在划分储层方面存在困难，因此引入多个能表征储层特性的参数综合评价致密砂岩气储层。以塔里木盆地克拉苏西部气田为例，压裂后，储层按照气井产能可分为4类，结合储层特点，选用斯通利波时差、斯通利波渗透率、反射系数和孔隙度参数可以较灵敏地反映储层孔隙和裂缝的发育情况，将这4个参数作为致密砂岩气藏储层评价判别集，引入一种基于模糊数学的多元隶属函数的方法来划分致密砂岩气储层，可以明显划分出这4类储层。
Different from the conventional sandstone reservoirs，the pore structure of tight sandstone reservoirs is more complex，and it is difficult to divide the reservoirs by a single parameter such as porosity or permeability.Due to the difficulty of single-parameter in reservoir classification，multi parameters that can describe reservoir characteristics have been integrated to evaluate tight sandstone gas reservoirs.Take western Kelasu Gas Field in Tarim Basin as an example，after fracturing，reservoirs can be divided into four types according to gas well productivity.And combined reservoir characteristics，the stoneley slowness，stoneley permeability，reflection coefficient and porosity can be used to reflect the development of reservoir pores and fractures more sensitively.These four parameters are used as discriminant sets for reservoir evaluation of tight sandstone gas reservoirs.So a method named multivariate membership function which based on fuzzy mathematics is introduced to divide tight sandstone gas reservoirs，which clearly distinguish these four types of reservoirs.
［1］Ye Sujuan，Li Rong，Yang Keming，et al.Characteristics and quantitative prediction of tight sand gas reservoirs in superimposed tight sandstone gas-bearing area，western Sichuan Depression[J].Acta Petrolei Sinica，2015，36(12)：1484-1494.
叶素娟，李嵘，杨克明，等.川西坳陷叠覆型致密砂岩气区储层特征及定量预测评价[J].石油学报，2015，36(12)：1484-1494.
[2]Kang Yili，Luo Pingya.Current status and prospect of key techniques for exploration and production of tight sandstone gas reservoirs in China[J].Petroleum Exploration and Development，2007，34(2)：239-245.
康毅力，罗平亚.中国致密砂岩气藏勘探开发关键工程技术现状与展望[J].石油勘探与开发，2007，34(2)：239-245.
[3]Sun Jianmeng，Han Zhilei，Qin Ruibao，et al.Log evaluation method of fracturing performance in tight gas reservoir[J].Acta Petrolei Sinica，2015，36(1)：74-80.
孙建孟，韩志磊，秦瑞宝，等.致密气储层可压裂性测井评价方法[J].石油学报，2015，36(1)：74-80.
[4]Wang Weiming，Lu Shuangfang，Chen Xuan，et al.A new method for grading and assessing the potential of tight sand gas resources：A case study of the Lower Jurassic Shuixigou Group in the Turpan-Hami Basin[J].Petroleum Exploration and Development，2015，42(1)：60-67.
王伟明，卢双舫，陈旋，等.致密砂岩气资源分级评价新方法——以吐哈盆地下侏罗统水西沟群为例[J].石油勘探与开发，2015，42(1)：60-67.
[5]Zhang Anda，Wang Cheng，Qiao Rui.A new method for determining physical property lower limit of tight sandstone reservoir and reservoir system classification[J].Lithologic Reservoirs，2014，26(5)：5-8.
张安达，王成，乔睿.致密砂岩储层物性下限确定新方法及系统分类[J].岩性油气藏，2014，26(5)：5-8.
[6]Lin Tong，Wei Hongxing，Xie Yani.Using throat parametre to assess tight sandstone gas reservoir：A case study of Dibei tight sandstone gas in the east of Kuqa Depression[J].Acta Sedimentologica，2016，34(5)：983-990.
林潼，魏红兴，谢亚妮.以喉道为参数的致密砂岩气储层评价方法——以库车坳陷迪北地区致密砂岩气为例[J].沉积学报，2016，34(5)：983-990.
[7]Li Haiyan，Yue Dali，Zhang Xiujuan.Characteristics of pore structure and reservoir evaluation of low permeability reservoir in Sulige Gas Field[J].Earth Science Frontiers，2012，19(2)：133-140.
李海燕，岳大力，张秀娟.苏里格气田低渗透储层微观孔隙结构特征及其分类评价方法[J].地学前缘，2012，19(02)：133-140.
[8]Wu Hao，Liu Ruie，Ji Youliang，et al.Classification of pore structures in typical tight sandstone gas reservoir and its significance：A case study of the He8 member of Upper Palaeozoic Shihezi Formation in Ordos Basin，China[J].Natural Gas Geoscience，2016，27(5)：835-843.
吴浩，刘锐娥，纪友亮，等.典型致密砂岩气储层孔隙结构分类及其意义——以鄂尔多斯盆地盒8段为例[J].天然气地球科学，2016，27(5)：835-843.
[9]Dai Quanqi，Luo Qun，Zhang Chen，et al.Pore structure characteristics of tight-oil sandstone reservoir based on a new parameter measured by NMR experiment：A case study of seventh member in Yanchang Formation，Ordos Basin[J].Acta Petrolei Sinica，2016，37(7)：887-897.
代全齐，罗群，张晨，等.基于核磁共振新参数的致密油砂岩储层孔隙结构特征——以鄂尔多斯盆地延长组7段为例[J].石油学报，2016，37(7)：887-897.
[10]Yang Qiulian，Li Aiqin，Sun Yanni，et al.Classification method for extra-low permeability reservoirs[J].Lithologic Reservoirs，2007，19(4)：51-56.
杨秋莲，李爱琴，孙燕妮，等.超低渗储层分类方法探讨[J].岩性油气藏，2007，19(4)：51-56.
[11]Zhang Yao.Fuzzy Mathematics Method and Its Application[M].Beijing:Coal Industry Press，1992.
张跃.模糊数学方法及其应用[M]北京:.煤炭工业出版社，1992.
[12]Tang Jun，Zhang Chengguang，Cai Deyang.Effectiveness evaluation of tight sandstone reservoir based on Stoneley wave characteristic parameters[J].Journal of Oil and Gas Technology，2013，35(6)：79-85.
唐军，章成广，蔡德洋.基于斯通利波特征参数的致密砂岩储层有效性评价方法研究[J].石油天然气学报，2013，35(6)：79-85.
[13]He Tao，Shi Ge.Advance and the status quo of the research on applications of stoneley wave in well logging[J].Acta Scientiarum Naturalium Universitatis Pekinensis，2002，38(4)：510-516.
何涛，史謌.斯通利波在测井应用中的研究进展和现状[J].北京大学学报：自然科学版，2002，38(4)：510-516.
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