Abstract
In order to ensure production and life safety in the process of oil and gas production, it is necessary to regularly perform pigging operations on pipelines. The fluid-solid coupling effect between the pig and pipeline impurities is complex, and theoretical methods are difficult to solve. Related experimental research is costly and experimental data is difficult to obtain. In order to further explore the factors affecting the cleaning effect of pigs in bi-metal composite pipes, this paper introduces fluid-solid coupling and uses the CEL method to establish a fluid-solid coupling model for the pig, pipeline impurities, and pipeline. The cleaning effect of the pipeline impurities is analyzed in terms of the shape, interference fit amount, and speed of the pig.
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