井下作业注氮气排液技术

Flowing Back Tech by Nitrogen Injection at Down Hole Operation

试油测试过程中,为落实地层产能及地层液性,液氮注排技术越来越受到关注。通过介绍液氮注排的工艺技术、安全防护,总结了其技术特点及与其它工艺的联作技术。经现场应用,该技术施工安全,工艺简单、排液速度快,可控制排液深度,特别对含天然气井有一定参考借鉴价值。

During testing process and for carrying out producing potential and formation liquid, flowing back tech by nitrogen injection is pay attention to gradually. According to introduction of its tech and security shelter, its feature and combined tech with others is summarized. Practical application shows that it is operated safely, simple and unflowing speed is great that can control depth of flow back, especially to wells containing natural gas, have a reference value.