三元一次不等式表征的工程问题的线性图解法

Linear Graphical Method of Engineering Problems Represented by Ternary Linear Inequality

提供了三元一次不等式表征工程问题的线性图解法。不同规格组合加厚油管柱及组合平式油管柱最大下入深度图解法中,以不加厚组合油管柱为研究对象,通过对组合管柱的受力分析进行公式推导,依据公式绘制图板。利用该图板可以进行单一管柱和双级油管组合管柱的强度校核及最大入井深度的求解。

A linear graphical method of engineering problems represented by ternary linear inequality is provided.In the graphic method of the maximum penetration depth of the combined thickened tubing string and the flat tubing string with different specifications,taking the non-thickened combined tubing string as the research object,the formula is derived by the force analysis of the combined tubing string,and then a board is drawn according to the formula.The board can be used to check the strength of the single string and the double-stage tubing combined string and to calculate the maximum penetration depth.