钻头使用的统计综合评判

采用主分量统计分析方法,将钻头的使用效果及使用条件同时放到一个系统中加以综合考虑,通过对钻头样本矩阵施行正交变换,寻求能极大限度地综合钻头信息的主分量,并以此来建立钻头的综合评判指标模型,实现对钻头的定量评判.该方法在长庆低渗油气田中北部区块钻头的统计分析与定量评判中得到应用,结论与现场应用比较吻合.

Synthetical Judgement of the Use of Bits by statistical Method

: The paper comprehensively analyses the results and conditions of bil utilization as one system with statistical analysis of main components. By way of orthogonal transformation of bit sample matrix to seek the main component, which can be used to synthesize the bit information to the utmost,a model of comprehensive bit judgement was established. It helps to realize quantitative judgement of bit utilization. This method has been successively applied in the middle-north area of Changging Oil & Gas Field with low permeability. The results are proved to be identical with the actual situation in the drilling site.