井下工具通过性计算方法及发展趋势

分析了井下工具通过性的计算方法,将计算方法按原理分为几何法、力学法与有限元法,并对各种计算方法的发展状况和应用情况进行了描述.结合各种方法的实际应用情况,分析了各种方法的优点和缺点,总结出了井下工具通过性计算方法的发展趋势,即由简单的刚性通过性分析转向柔性通过性分析,更加注重管柱串的下入安全,并综合应用几何法、力学法与有限元法分析通过性.

Development Trend of Calculation Method about Downhole Tools Passage Capacity

Calculation methods about downhole tools Passage Capacity are analyzed According to the principle of each method, downhole tools passage capacity calculation method can be divided into three categories,namely the geometric method, the mechanics method and finite element method. The development status and application of each method were described. Based on the practical application of all kinds of situation about each method,the advantages and disadvantages of various methods were analyzed. The development trend of calculation method about downhole tools passage capacity was summarized. Compared with the simple analysis of rigidity method,analysis based on flexible are more suitable. More and more attention were paid to ensure the string security in down into process. At the same time, integrated application of the analysis method used geometry method, mechanics method and finite element method were more often to be used.