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Exploration Example: North Slope, Alaska

机译:勘探实例:阿拉斯加北坡

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The North Slope of Alaska is among the best places on Earth to explore and test gas hydrates for possible economic production. Hydrates are known to be widespread in this region at shallow levels, to be concentrated in identified units, and to exist above a free-gas zone in permeable sediments. Several decades of drilling and oil development, meanwhile, have led to an excellent understanding of reeional and local geology, as well as to the development of a large-scale network of infrastructure. Abundant control wells (>50) for hydrate occurrence are known, such that the limits of such occurrence can be mapped or predicted with relative accuracy. Moreover, there is motive to develop new gas resources: companies now engaged in enhanced recovery operations for conventional reservoirs on the North Slope are currently utilizing miscible gas flooding and re-pres-surization through gas injection.
机译:阿拉斯加北坡是地球上探索和测试天然气水合物以实现可能的经济生产的最佳场所之一。已知水合物在该区域的浅层分布广泛,集中在确定的单位中,并存在于可渗透沉积物中的自由气体区上方。同时,数十年的钻探和石油开发使人们对区域和地方的地质有了很好的了解,并发展了大规模的基础设施网络。已知有大量水合物发生的对照井(> 50),因此可以相对准确地绘制或预测这种发生的界限。此外,开发新的天然气资源的动机是:现在从事北坡常规油藏的强化采油作业的公司目前正在利用可混溶天然气驱和通过注气进行再加压。

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