A、（1）析出的液态水与天然气中的某些组分形成固态水合物，从而堵塞管道或设备The resulting liquid water forms a solid hydrate with some components of natural gas, clogging pipes or equipment；
B、（2）析出的液态水会加剧管内壁的腐蚀，尤其是当天然气中含有硫化氢和二氧化碳时更为严重The resulting liquid water can exacerbate corrosion on the inside of the pipe, especially when natural gas contains hydrogen sulfide and carbon dioxide；
C、（3）水积聚后减小流通面积增加输气阻力。如果析出的液态水太多，管道中可能会出现气液两相段塞流，在干线输气管道上不允许出现After the accumulation of water, the flow area decreases and the resistance of gas transmission increases. If too much liquid water is precipitated, gas-liquid two-phase slug flow may occur in the pipeline, which is not allowed in the main pipeline；
D、（4）水蒸气降低湿天然气的热值Water vapor reduces the calorific value of wet natural gas。