Advantages of the Tricone Bits
At present, whether in domestic construction or abroad to contract water well projects, the drilling technology of roller cone bits is generally adopted, especially in the construction of deep water wells and geothermal wells. From the field of use of roller cone bits in recent years, it has been extended to pile foundation construction, trench-less engineering construction, coal mine gas discharge well construction, the application scope is constantly expanding, and the social and economic benefits are very significant. Engineering practice has proved that the use of roller cone drilling technology has no special requirements for formation and groundwater conditions, and has the characteristics of good adaptability and wide application range, and should be vigorously promoted and applied.
Compared with the general barrel drilling and core drilling efficiency, the drilling process of the roller cone bit is one to several times higher, and the life of the bit is also long. Dozens of meters to 100 meters are generally not a problem, the cost is low, and the one-time investment is not large. During the drilling process, the pure drilling time is increased and the auxiliary time is shortened (sometimes drilling is carried out only once in several shifts). The drilling wall is smooth, complete and vertical, which is also the special advantage of the positive circulation drilling process.