Application of High-low Pressure Integrated Stoppling Technique in LuNing Oil Pipeline

Technical principle of high-pressure disc stoppling technique and low-pressure-pocket stoppling technique and advantages in combined utilization of the two techniques arc described.Taking Huaihe River crossing project of LuNing Oil Pipeline as an example, high-pressure integrated stoppling technique is adopted and optimized program for improved low-pressure pocket stoppling technique is worked out.and side stoppling for the pipeline is successfully performed with this technique.