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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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柳林地区煤层气勘探开发模式研究
Keywords: 柳林地区,煤层气,地应力,储层评价,平衡产能
Abstract:
？柳林地区是全国煤层气开发先导示范区，勘探开发技术逐渐完善。基于区域地质规律，分析了煤层气组成、地应力和地温场特点以及不同储层的差异|结合开发方案和技术选择，从开发效果、开发层位、钻完井设计等方面进行了规律探究。山西组煤层气ch4含量、兰氏体积和含气饱和度均较太原组高；地应力和地温场在垂向上呈现分带，以700～850m埋深最小水平主应力最高，地层呈挤压状态；不同煤层物性差异大，水动力变化是层间矛盾的主要因素。在开发效果上，山西组直井较太原组好，太原组产水量普遍较高；水平井产能效果最好，且产量相对稳定。钻井设计中创新性地采用双煤层多分支水平井，充分调用了资源潜力。在煤层气勘探开发实践中，以平衡产能为导向，由地应力、地温场和储层压力3个要素组成地质能量内循环，激励渗透率、产气量和产水量组成的响应外循环；同时以合理的气水排采制度控制内循环，其中钻井和储层改造是释放产能的驱动，合理的排采方案是维系开发平衡的驱动。？
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