Research On Deep Rock Mechanics And Rock Drillability Of Daqing

Fast drilling in deep layer is technical difficulties during deep or ultra-deep well drilling, which is the key limiting the development of deep well drilling. Study on rock mechanics of deep wellbore, especially on rock drillability and rock anisotropy is a key project to resolve the problems of deep or ultra-deep well drilling.In this paper, research on the deep rock mechanics and rock drillability under high temperature and high pressure. Analysis of drilling in deep rock mechanics, the application of ultra-deep situation. Through high-temperature test of the grey crystal tuff, shale, in the constant stress on the review under the conditions of a different confining pressure, the core temperature of different compressive strength, modulus, Poisson's ratio of testing, research of high temperature on the nature of the rock Impact. Use of logging data forecast deep rock drilling and the use of cluster analysis methods primaries grey bit and the use of principal component analysis optimization bit, and through the deep hole drilling of rock, rock elastic parameters, rock hardness and plastic coefficient of indoor Experiments and analysis, the establishment of a deep hole drilling of rock and rock mechanics of the relationship between the parameters obtained deep hole drilling of rock and rock mechanics parameters of the equation, to increase drilling speed provide a basis.