石油天然气长输管道套管内充填技术研究

Study on Casing Filling Technology of Long-Distance Oil and Gas Pipeline

本文通过分析油气管道混凝土套管的处理方式,阐述了红砖、沥青麻丝封堵和封堵后套管内吹沙或者注水泥砂浆这两种方式的适用性以及缺陷。提出了新型复合泥浆充填技术及方案,从流动性、导电性、体积收缩率以及强度等方面分析了新型复合泥浆充填技术的适用性和注意事项。本文的研究为石油天然气长输管道套管内充填技术大规模应用提供参考。

By analyzing the treatment methods of the concrete casing of oil and gas pipeline, this paper ex-pounds on the applicability and defects of red brick and asphalt hemp plug and sand blowing or cement mortar injection in casing after plugging. The new composite mud filling technology and scheme are put forward. The applicability and matters needing attention of the new hybrid mud filling technology are analyzed from fluidity, conductivity, volume shrinkage and strength. The research in this paper provides a reference for the large-scale application of casing filling technology in long-distance oil and gas pipelines.