【摘要】 本文利用岩石的室内试验,研究了沉积岩层的不同角度的微钻头可钻性的变化规律,建立了这种变化与地层各向异性指数h的关系,并测定了部分岩芯的各向异性参数。文中提出用简易的岩石可钻性仪器测定及计算h值的新方法,具有可靠、实用的特点,有一定的现场使用价值。更多还原

【Abstract】 The relationship between variation of microbit drillability at different angle in sediment formation and the drillability anisotropy index h has been established. By means of a simple and inexpensive microbit test, the values of drillability anisotropy parameters of 16 core samples are presented. This newly-proposed simple method is useful to the design of directional drilling.更多还原