天然气水合物开发模拟实验技术与方法

EXPERIMENTAL TECHNIQUES AND METHODS FOR NATURAL GAS HYDRATE EXPLOITATION

详细分析了国内外天然气水合物开发模拟实验技术,对不同作用(类型)的天然气水合物开发模拟实验装置进行的深入研究表明,模拟实验研究还处在初级阶段,基于不同的开发方式,以一维实验模型的定性实验分析为主。为了更真实地模拟天然气水合物藏钻探与开发的物理和工程环境,应基于相似理论设计二维、三维实验模型。模型的设计应更多关注实验数据的准确性、实验设备的可靠性和实验操作的便利性,不应盲目追求实验模型的低温、高压和大容量。给出的实验装置优化设计指标可供参考。

Simulation experiment techniques for natural gas hydrate （NGH） are described in details in this paper. A deep study on equipment for simulation of development of different types of NGH shows that the simulation experimental researches for NGH exploitation remain in its infancy, and most of them are qualitative from one-dimensional models based on different development methods. Two-di- mensional and three-dimensional experiment models based on the similarity theory should be designed to simulate the real physical and engineering environment during NGH drilling and exploitation. In the model designs, more attention should be paid to the precision and accuracy of the experimental da- ta, the reliability of experimental equipment and the convenience of experimental operation. It is not encour- aged to only seek for low-temperature, high pressure and large capacity of device. An optimized design index is given in this paper, which can be used as a reference for design of experimental apparatus.