基于CFD仿真技术的钻井液传输数据能力分析

Simulative Analysis of Capacity of Transmission Data for Drilling Fluid Based on CFD

钻井液是石油行业无线随钻领域典型的信息传输介质。但是长久以来，缺乏对其数据携带能力影响参数的相关研究，导致很难开发出高性能的泥浆脉冲发生器。针对这个问题，以CFD流体仿真技术为工具；以油田实际井下工作环境为背景；并以井深参数为变量对水基钻井液本身的数据传输能力进行了系统的研究。最终通过仿真实验得到了1000-6000m深度下的泥浆压力波传输速率与井深的可靠对应关系；通用极限速率；并总结出了压力波振幅随深度增加而产生的变化规律，整个仿真实验的结果对高速泥浆脉冲发生器的研制具有重大意义。

Drilling fluid is a typical information transmission medium in the field of oil industry. But for a long time, the lack of relevant research on the data carrying capacity of its data results in difficult to develop high performance mud pulse generator. The CFD simulation technology as a tool; to the actual oil down-hole working environment as the background, and to the depth of the parameters for variables, water-based drilling fluid data transmission capacity were systematically researched. The corresponding relationship between the mud pressure wave transport rate and the depth of the mud at 1000-6000 m depth was obtained, generic limit rate, and the variation rule of pressure wave amplitude with the increaseing depth. The results of the whole CFD experiment have great significance to the development of high speed mud pulse generator.