天然气水合物开采方法的数值模拟研究进展

天然气水合物具有含气量高、污染低、储量大等优点,但存在埋藏深、导热性差等问题。介绍了国内外天然气水合物开采技术的研究和应用进展,概述了传统天然气水合物开采方法的优缺点,指出天然气水合物开采难度大的普遍问题,分析其原因为天然气水合物开采效率低、能耗高、风险大,以及天然气水合物开采背景与该产业链发展水平不相匹配等。在此基础上提出了利用数值模拟技术对海底和冻土层下的天然气水合物开采进行研究,并叙述了数值模拟技术在天然气水合物开采领域的发展现状,利用该方法便捷、经济、高效的特点,最终形成天然气水合物开采方法与数值模拟技术相结合的新型开采理念。

Research Progress of Numerical Simulation About Exploitation Method of Natural Gas Hydrate

Natural gas hydrate has the advantages of high gas storage capacity, low pollution, large reserves and so on. However there are also some disadvantages for the production, such as deep deposit, low thermal conductivity and so on. In this article, the progress of research and application of natural gas hydrate production technologies was introduced, and the advantages and disadvantages of conventional gas hydrate production methods were summarized. It's pointed out that gas hydrate is hard to product because of the low gas hydrate extraction efficiency, high energy consumption, high risk, as well as natural gas hydrate production background does not match with the development level of the industry chain. On this basis, numerical simulation technology was proposed to study the gas hydrate production in the permafrost and deep ocean sediment. Moreover, the development status of numerical simulation technology was described as well as its characteristics. Finally, a new concept combining the gas hydrate production methods and numerical simulation technology was formed.