天然气水合物钻井泥浆冷却系统的设计及现场应用

Design and Field Application of Gas Hydrate Drilling Mud Cooling System

摘要:

从天然气水合物赋存的温压条件入手，说明了制冷泥浆的重要性。介绍了天然气水合物钻井泥浆冷却系统的结构组成、工作原理及设计过程。进而阐述了该套系统在中国冻土区天然气水合物科学钻探施工中的应用情况。试验证明：该套系统完全达到了设计要求，并首次成功地在青藏高原木里盆地永冻区钻获天然气水合物样品。

Abstract:

The importance of drilling mud cooling is explained in terms of the storage temperature and pressure of gas hydrate. The structure, operational principle and design process of the mud cooling system for gas hydrate drilling are introduced with the field experiment. Of the system in the Chinese permafrost zone gas hydrate drilling. The experiment has proved that this system completely met the design requirements and for the first time successfully recovered the gas hydrate sample in the permafrost zone of the QinghaiTibetan plateau.