Topic: drill Bits

Topic: drill Bits

Performed: student of group

URB 19-02 Kurbanbaev Erkin

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Types, classification, device of drill bits

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• Rock cutting tool - part of the

drill string intended for the

direct destruction of rock during

the drilling of a well.

• Drill bit - the main element of a drilling tool for mechanical destruction of rocks in the process of drilling a well

Rock cutting tools classifications

• By appointment
• for solid drilling
• for core drilling
• By the method of destruction of rocks
• for rotary drilling
• for hammer drilling
• By the mechanism of destruction of rocks
• abrasive type
• crushing type

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A drill bit is one of the main tools for mechanical breaking up of rocks. Based on the form of the working part, they distinguish:

• A drill bit is one of the main tools for mechanical breaking up of rocks. Based on the form of the working part, they distinguish:
• roller cone bits - drilling oil, gas wells
• paddle bits - for drilling soft to medium hard rock.

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The first type can consist of one or more spherical or cylindrical cones. The latter are mounted on bearings on the section trunnions. Plain bearings, rolling bearings, or a combination of both can be used.

• The first type can consist of one or more spherical or cylindrical cones. The latter are mounted on bearings on the section trunnions. Plain bearings, rolling bearings, or a combination of both can be used.

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The second type is a forged body on which the blades are placed. Their lateral faces are reinforced with special teeth, which simplify the calibration of the borehole walls. In addition, the blades themselves are also reinforced with hard alloy - this is done to increase their wear resistance and, accordingly, their service life.

• The second type is a forged body on which the blades are placed. Their lateral faces are reinforced with special teeth, which simplify the calibration of the borehole walls. In addition, the blades themselves are also reinforced with hard alloy - this is done to increase their wear resistance and, accordingly, their service life.

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Bit types for rotary drilling

• Roller bit Blade bit

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Special bit

• Special bit

• Diamond bit

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Roller bits are divided into three groups:

• one roller cone bits (a)
• two roller cone bits (b)
• three roller cone bits (c)

(a)

(b)

(c)

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Thank you for your attention!!!

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