中文摘要：

天然气水合物是一种未来潜在清洁能源,在大陆永久冻土带和海洋环境中储量巨大。然而,在天然气水合物开采过程中不可避免地出现砂砾随着流体进入井筒采出的现象,制约天然气水合物的安全开采。本文介绍了各天然气水合物开采现场的出砂情况及危害,总结了国内外水合物开采出砂的研究现状,分析水合物出砂研究的难点及我国的挑战。分析结果表明,天然气水合物开采出砂不仅与其自身分解特性有关,还与其赋存储层的沉积物有关。对水合物出砂以及防砂提出了具体的研究思路及解决办法,为未来天然气水合物安全开采提供参考和建议。

英文摘要：

Nature gas hydrate is a future potential clean energy which has huge reserve in the permafrost and marine environment. However, during the gas hydrate exploitation process, the sand gravel will flow into the wellbore following the fluid, namely sand production, which restricts the safety of hydrate exploitation. In this paper, the field sand production case and hazards encountered during natural gas hydrate exploitation was reviewed, the domestic and foreign research status of sand production in hydrate exploitation was summarized, and China’s difficult and challenge of hydrate sand production research was analyzed. The results show that the sand production of hydrate exploitation is not only affected by its own decomposition characteristics, but also related to the reservoir sediments. For the shortcomings of hydrate research in sand production and sand control methods, the specific research ideas and solutions are mentioned. This would provide reference and suggestions for the safe exploitation of gas hydrates in the future.