ROCK MECHANICS CHARACTERS EXPLAINING METHOD AND DEVELOPING APPLICATION SYSTEM SOFTWARE

An application system software have been developed to illustrate rock mechanics characters and select bit using log data. This system can explain rock drillability, hardness,shear strength and plastical factor,combining these characters to evaluate and clas-sificate rock strength comprehensively using gray clustering procedure and establish rock strength profile to select bit. The data can be maneged and the profile can be plotted by the system. Through field application,it have been proven to have economical,reliabal and practicable.