Research on Heat Transfer Characteristics of Drilling Fluid in Surface Pipeline of Drilling Platform
Clear understanding of the heat transfer characteristics of drilling fluid in the surface drilling pipeline is essential for winter insulation on drilling platforms.However,most of the previous studies focused on the research of thermal insulation structures for traditional pipelines such as heating pipelines,which could not effectively guide the thermal insulation design of the surface drilling pipeline.In this paper,the C++ calculation program for the heat transfer characteristics of drilling fluid in the surface pipeline was compiled,and the temperature distribution rules of drilling fluid in the surface pipeline,the insulated pipeline,and the electric heat tracing pipeline were studied.The results showed that when the shutdown time was less than 2.2 h,there was no need to lay insulation material on the surface pipeline.When the shutdown time was less than 11.23 h,the surface pipeline could be laid with 0.01 m glass wool to meet the actual requirements.With the continuous increase in shutdown time,the surface pipeline needed to lay electric heat tracing to maintain the temperature of the drilling fluid in the pipeline.For the one-side laying electric heat tracing belt,the average temperature of the drilling fluid in the outlet section could reach 22.50℃when the heating time was 60 min.The research results have important reference values for the thermal insulation structure design of the surface pipeline in the drilling site.
Drilling platformSurface pipelineDrilling fluidHeat transfer characteristicsInsulation structure
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