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金刚石钻头孔底破岩机理至今尚有许多争论。但是,对于孕镶金刚石钻头工作原理持研磨作用观点还是比较普遍的。认为金刚石自磨出刃和胎体材料的磨损都取决于岩粉研磨能力和胎体耐磨性及其相互关系。岩粉研磨能力(A)是岩粉矿物成份(i)、硬度(m)、颗粒形状(b)以及岩粉对胎体材料作用力(P)的函数,即:A=f(m·b·i·p)实践和有关资料分析表明,不同性质的岩粉对金刚石钻速有不同的影响。软岩层,其结构往往松软。钻速高孔底粉多,影响金刚石自磨出刃和冷却,造成岩粉二次破碎降低钻速,甚至烧钻。因此,在软岩层钻进中应加足冲洗液,排除岩粉。硬岩层,其矿物成分中往往含有较多的结晶石英颗粒。钻进岩粉粗硬,有很强的磨蚀能
Diamond drill hole bottom rock breaking mechanism so far there are many controversies. However, the concept of grinding with impregnated diamond bits working principle is still relatively common. It is considered that the abrasion of diamond self-abrasive blades and carcass materials are all dependent on the grinding ability of the rock powder and the wear resistance of the carcass and their interrelationship. The grinding capacity of rock powder (A) is a function of rock composition (i), hardness (m), particle shape (b) and the force of rock powder on the matrix material (A): A = f · P · p) Practice and related data analysis show that different types of rock powder have different effects on diamond penetration rate. Soft rock, the structure is often soft. Drill hole high hole bottom powder, diamond self-abrasive edge and cooling, resulting in rock powder secondary crushing reduce the rate of drilling, and even burning drill. Therefore, in the soft rock drilling should add enough rinse solution, excluding rock powder. Hard rock layer, the mineral composition often contain more crystalline quartz particles. Drilled hard rock powder, there is a strong abrasive energy