Rotinas operacionais: monitoramento do desgaste em brocas tricônicas

Abstract

The wear of cutting tools results in decreased of the life and lower penetration rates, affecting the efficiency and costs of drilling operation. Occur various types of wear on tricone rollers bits, used in rotary drilling method, such wear can be associated as to inadequate specification of the type of bit as to shortcomings of the operation or drilling equipment, misapplication of drilling parameters, these factors may exert direct influence on the wear of cutting tools, or act as contributors and/or aggravating the process. Therefore, it is important to monitoring, classification and evaluation of wear that occur in drills in order to compensate shortcomings in the process. The application of good procedures for implementation of activities and practices of monitoring parameters and evaluation of results leads to the reduction of many deficiencies in controlling the wear of cutting tools and the drilling process in general, helps in the generation of database with information sufficient for subsequent analysis of operational monitoring, classification and evaluation the type of wear and the factors that influence the wear of cutting tools, and allows the obtaining of data for analysis of other process variables, resulting in improvements in quality and performance of drilling, and better control of the process and the total costs of drilling.