Tricone Bit for Water Well Rock Drilling

overview

Introduction

Roller bit is the most widely used drilling bit. When the roller bit is working, the cutting teeth alternately contact the bottom of the water well. It is mainly used for water well drilling in rock formation.

Features

1. The drill bit size can be designed according to customers requirements.

2. Small rock breaking torque and small contact area of the cutting teeth and the well bottom.

3. The specific pressure is high, and it is easy to drill into the rock.

4. The total length of the working edge is relatively large, so the wear is relatively reduced.

5. The roller bit can adapt to a variety of formations from soft to hard.

Application

The tricone bit is now widely used in geological exploration, oil field wells, water wells, coal mining, geological surveys, hydrological exploration, engineering piling, bridges, etc.

Technical Data

IADC	Drilling pressure(KN/mm)	Drilling speed(r/min)	Applicable stratum
417/427	0.3-0.9	150-70	Very soft stratum with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
437/447	0.35-0.9	150-70
515/525	0.35-0.9	180-60
517/527	0.35-1.0	140-50	Soft stratum with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
535/545	0.35-1.0	150-60	Soft to medium-soft stratum with low compressive strength, such as medium soft shale, medium soft limestone, medium soft sandstone, forming medium hard and hard abrasive interlayers.
537/547	0.4-1.0	120-40
617/627	0.45-1.1	90-50	Medium-hard stratum with high compressive strength, such as hard shale, limestone, sandstone, dolomite, etc.
637	0.5-1.2	80-40	Hard stratum with high compressive strength, such as sandstone, limestone, dolomite, gypsum, marble, etc.
737	0.7-1.2	70-40	Hard stratum with high compressive strength, such as hard limestone, dolomite, etc.
827/837	0.7-1.2	70-40	Extremely hard stratum with high compressive strength and high abrasiveness, such as hard limestone, dolomite, hard sandstone, vermiculite, etc.