Novel split tricone bit

Abstract

The invention discloses a novel split tricone bit. The bit comprises a connecting rod, a palm base, fixing grooves, positioning grooves, a cone leg, fixing holes, a fixing screw, a damping block, positioning protruding blocks, a rotary shaft, a cone, a rotary disc, extrusion screws, springs and a protection hood. The novel split tricone bit has the beneficial effects that the cone leg can be freely dismounted from and mounted on the palm base, the cone leg and the cone can be separately dismounted for maintenance and replacement, the maintenance difficulty of quick-wear parts is lowered, the positioning protruding blocks on the two sides of the cone leg are clamped in one positioning groove, the mounting position of the cone leg is not prone to shifting, and mounting is faster; and the protruding rubber damping block is arranged on the side wall, making contact with the corresponding fixing groove, of the cone leg, the rotary shaft can freely rotate on the rotary disc of the cone leg,the rotary shaft drives the cone to rotate, compared with the traditional practice that the cone rotates around the rotary shaft, the internal structure of the cone can be simplified, and the cone damage rate is greatly lowered.

Description

technical field [0001] The invention relates to a three-cone drill bit, in particular to a novel split-type three-cone drill bit, which belongs to the field of drilling technical equipment. Background technique [0002] The roller cone bit is the most widely used drilling bit and is an important tool for oil drilling. Its working performance will directly affect the drilling quality, drilling efficiency and drilling cost. When the roller cone bit is working, the cutting teeth alternately touch the bottom of the well. The rock-breaking torque is small, the contact area between the cutting teeth and the bottom of the well is small, the specific pressure is high, and it is easy to penetrate into the formation. The total length of the working blade is large, so the wear is relatively reduced. Among the roller cone bits, the tricone bit is the most used. Drill bits are widely used in oil, natural gas drilling and other geological drilling. When a certain cone of the existing tric...

AI Technical Summary

Problems solved by technology

[0002] The roller cone bit is the most widely used drilling bit and is an important tool for oil drilling. Its working performance will directly affect the drilling quality, drilling efficiency and drilling cost. When the roller cone bit is working, the cutting teeth alternately touch the bottom of the well. The rock-breaking torque is small, the contact area between the cutting teeth and the bottom of the well is small, the specific pressure is high, and it is easy to penetrate into the formation. The total length of the working blade is large, so the wear is relatively reduced. Among the roller cone bits, the tricone bit is the most used. Drill bits are widely used in oil, natural gas drilling and other geological drilling. When a certain cone of the existing tricone bit is damaged, it is necessary to take out the ball between the cone and the rotating shaft of the palm, and then realize the alignment of the cone. Remove and replace, the tooth palm and the palm seat are integrally connected, the overall quality of the drill bit is large, it is inconvenient to replace a single cone, and when replacing a single cone, the labor intensity of the worker is high, and the replacement of the cone is very difficult. the inconvenience

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