jet pdc drill bit

Abstract

The invention discloses a jet PDC drill bit, which relates to the field of petroleum and natural gas drilling engineering. The jet PDC drill bit comprises: a drill body, the lower end of the drill body has a cutting structure, and the drill body has an accommodation chamber and a flow channel unit for diversion; The hydraulic-electric pulse mechanism arranged in the accommodation chamber, the hydraulic-electric pulse mechanism includes: a fixing piece, the fixing piece has a diversion channel from top to bottom, the diversion channel is connected with the flow channel unit, and a wire groove is opened in the fixing piece Unit; at least one electrode unit arranged on the side wall of the flow guide channel, the electrode unit includes: a positive electrode and a negative electrode arranged oppositely; a first wire and a second wire arranged in the wire groove unit, the first wire and the positive electrode The electrodes are connected with each other, and the second wire is connected with the negative electrode; the drill joint is connected with the upper end of the drill body. The application itself can directly form a high-pressure jet inside the drill bit without other booster equipment.

Description

technical field [0001] The invention relates to the field of oil and gas drilling engineering, in particular to a jet PDC drill bit. Background technique [0002] In oil and gas drilling engineering, due to the difference in the formation environment, the soft and hard formations are not evenly distributed. When the drill bit reaches the soft and hard formations, the loss of the cutting teeth of the conventional PDC bit will increase during the drilling process. . Because, when entering the soft formation, the conventional PDC drill bit will have mud bumps and other phenomena, and when entering the hard formation, the rock in the hard formation will increase the reaction force on the teeth, resulting in the tooth collapse of the drill bit and reducing the drill bit. The rock-breaking efficiency and the service life of the drill bit will also be reduced. Therefore, in order to adapt to high-efficiency drilling in complex formations, designing and developing new PDC drill bi...

AI Technical Summary

Problems solved by technology

[0002] In oil and gas drilling engineering, due to the difference in the formation environment, the soft and hard formations are not evenly distributed. When the drill bit reaches the soft and hard formation, the loss of the cutting teeth of the conventional PDC bit will increase during the drilling process.

Because, when entering the soft formation, the conventional PDC drill bit will have mud bumps and other phenomena, and when entering the hard formation, the rock in the hard formation will increase the reaction force on the teeth, resulting in the tooth collapse of the drill bit and reducing the drill bit. Rock breaking efficiency, the service life of the drill bit will also be reduced

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