With the development of drilling technology, the number of drilling deep wells, ultra-deep wells are also increasing. From the depth of drilling in the strata, the cone bit has an irreplaceable advantage. Studies have shown that one of the major factors affecting the life of a cone bit is the seal life of the bearing system. In this paper, ABAQUS finite element software is used to analyze the single metal floating seal structure of typical cone bit bearing, and simulate the deformation of the

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... oating end seal assembly process and the change of contact surface stress. This has reference value for the design of similar floating end seal structure. Key Words: cone bit; single metal; floating seal ;ABAQUS; finite element 0 INTRODUCTION With the exploitation of oil and gas resources continue to deepen, The oil and gas resources in the shallow of earth continue to decrease. The exploitation of oil and gas began in more severe environments such as deep seas, deep strata, deserts, plateaus and so on. Deep wells, ultra-deep wells, directional wells and large displacement horizontal wells are gradually being widely used. From the depth of drilling in the strata, the cone bit has an irreplaceable advantage. Studies have shown that one of the major factors affecting the life of a cone bit is the seal life of the bearing system. [1] With the increasing difficulty of the drilling, The working environment of the drill bit is getting worse. The drill bit life and reliability also put forward higher requirements. Take the cone bit for example, It will be in the more harsh working environment to withstand greater work load such as greater pressure, torque and lateral force, etc. Its bearing seal is the only barrier to prevent the external drilling mud into the bearing. Once the bearing seal structure fails, Drilling mud will be directly into the bearing. The bearing will be invalid because of bearing stuck or bearing abrasive wear [2]. In this paper, ABAQUS finite element software is used to analyze the single metal floating seal structure of typical cone bit bearing, and simulate the deformation of the floating end seal assembly process and the change of contact surface stress. This has reference value for the design of similar floating end seal structure.