POTENTIAL ASSESSMENT, EXPLORATION AND PRODUCTION TEST OF NATURAL GAS HYDRATE
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摘要:
天然气水合物是一种清洁高效的环保型化石能源，分布于世界深水海域和多年冻土带环境之中，资源潜力巨大。最新的评价预测结果表明，全球水合物沉积物中碳资源量介于500~3 000 Gt。作为一种新型的非常规能源，目前其资源量评价预测尚存在不确定性，而且并非所有的天然气水合物都可开采利用。不同赋存形态的天然气水合物构成了能源金字塔，展示了不同类型水合物资源潜力大小及可开发利用的程度。因此，天然气水合物资源潜力评价预测与开发利用正越来越多地受到人们的关注与重视。尽管中国在南海的试采工作取得了重大突破，但如何经济、安全地世界性开采这种新能源仍需要开展更多的研究工作。
Abstract:Natural gas hydrate is a clean and efficient environment-friendly fossil energy, widely distributed in deep-sea and permafrost zones of the world.The latest assessment shows that the amount of carbon resources stored in global hydrate deposits is between 500~3000 Gt.As a new type of unconventional energy, the resource has a huge potential even though the current resource rating forecast is still uncertain, and not all natural gas hydrates are exploitable with present technology.Natural gas hydrates of different forms constitute an energy pyramid, which shows the potential of exploitation of different types of hydrate resources.As an extremely important energy source, the prediction and development of natural gas hydrate resources potential has attracted great attention from world societies.Although the production test in South China Sea has got a big breakthrough, more work is still required to recover this kind of new energy economically and safely.
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Key words:
- Gas hydrate /
- energy pyramid /
- resources potential assessment /
- recoverable resources
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表 1 天然气水合物试采结果统计
Table 1. Statistics of gas hydrate exploitation test results
试验场 位置 年份 方法 生产周期 累计产气量/m3 Mt.Elbert Well 阿拉斯加北斜坡 2007 降压法 11 h - 2002 热激法 5 d 516 Mallik Site 加拿大麦肯齐三角洲 2007 降压法 12.5 h 830 2007-2008 降压法 139 h 13 000 Ignik Sikumi 阿拉斯加北斜坡 2012 二氧化碳置换 约6周 24 085 Daini Atsumi Knoll 日本南海海槽 2013 降压法 6 d 120 000 神狐海域 南中国海 2017 降压法 60 d* 超过300 000* *为截止2017年7月9日的数据 
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