支撑剂非均匀分布对页岩气井产能的影响Influence of Non-uniform Distribution of Proppant on Productivity of Shale Gas Well
侯腾飞,张士诚,马新仿,李栋,邵俊杰
摘要(Abstract):
通过建立考虑支撑剂非均匀铺置的页岩气产能预测模型,分析了支撑剂均匀铺置与非均匀铺置2种方式下储层与裂缝参数对气井产能的影响。模拟结果表明:支撑剂浓度低和裂缝导流能力小时,支撑剂非均匀分布大大降低了气井产能,当裂缝导流大于4μm~2·cm时,可忽略非均匀铺砂对产能影响;非均匀铺砂对产能影响最敏感的参数是基质渗透率,其次依次是裂缝半长、导流能力和簇间距;对涪陵X区页岩气藏,均匀铺砂方案比非均匀铺砂方案下的10 a累积产气量高35.6%。
关键词(KeyWords): 支撑剂非均匀分布;水平页岩气井;产能影响因素
基金项目(Foundation): 国家科技重大专项“页岩气储层压裂改造机理研究”(编号:2013CB228004);; 高等学校博士学科点专项科研基金课题(编号:20120007110004)联合资助
作者(Author): 侯腾飞,张士诚,马新仿,李栋,邵俊杰
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