The Compatible Types of Rotary Drilling Rig Drill Bits

The drill bit of a rotary drilling rig is the core component that directly contacts the geological layer, and its type selection directly affects the drilling efficiency and quality. It is a basic common sense in rotary drilling construction that different geological conditions require suitable drill bits.

1. Spiral drill bit: Suitable for soft soil layers such as clay and silt. It conveys the construction waste upwards through spiral blades, making it less prone to clogging during drilling and capable of efficiently completing shallow or medium-depth drilling.

2. Core drill bit: Designed for moderately weathered and slightly weathered rock strata. The edge of the drill bit is inlaid with hard alloy, which can cut the rock layer by rotation, reducing the wear on the drill bit and ensuring the stability of hard rock drilling.

3. Cylindrical drill bits: They are often used in loose strata such as sandy soil and gravel layers. The cylindrical structure can wrap the construction waste and prevent the hole from collapsing during the drilling process, making it particularly suitable for scenarios where the integrity of the hole wall needs to be maintained.

4. Sand-grabbing drill bit: Suitable for strata with high sand content or those containing pebbles. Its bottom is equipped with an opening and sand-harvesting structure, which can quickly remove sand and pebbles from the hole and prevent the accumulation of construction waste from affecting the drilling progress.

5. Bottom-expanding drill bit: Mainly used for bottom-expanding operations of piles. After the straight hole is completed, the mechanical structure is used to expand the tool to enlarge the bottom of the pile, thereby enhancing the bearing capacity of the pile foundation.

6. Double-bottom drill bit: Suitable for strata with high clay content. The double-bottom design reduces the adhesion between the clay and the drill bit, and at the same time enhances the slag discharge capacity, avoiding the decline in drilling efficiency caused by the adhesion of slag.

In conclusion, the type of drill bit suitable for rotary drilling RIGS must strictly match the geological conditions. Choosing the right drill bit can maximize the performance of the equipment, reduce construction failures, and is the key to ensuring drilling quality and improving construction efficiency.