海洋天然气水合物藏开采若干问题研究
1. 海洋石油高效开发国家重点实验室,北京 100027;
2. 中海油研究总院,北京 100027
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摘要
文章阐述了在开采天然气水合物方面所取得的研究进展,包括天然气水合物开采模型及数值模拟,天然气水合物开采物理模拟相似准则,天然气水合物开采方法研究等。建立、完善了天然气水合物开采的数学模型,并以此为基础建立了降压开采水合物物理模拟相似准则。降压法开采单一水合物藏,在某些情况下开采能量不足会导致藏内结冰严重。对下伏气的天然气水合物藏而言,水合物能够提高产气量、延长稳产时间。结合降压和注热的优势提出了注温水-降压法联合开采方法,该方法具有稳产时间较长、稳产气速度高的特点。
关键词
天然气水合物 ; 降压法 ; 注温水-降压联合开采方法 ; 数学模型 ; 相似准则
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