Introduction To Commonly Used Drill Bits in Rotary Drilling Rig Construction

The efficiency and precision of rotary drilling rig operations cannot be achieved without suitable drill bits. Different types of drill bits are designed for various geological conditions and construction requirements, which are the key to the performance of rotary drilling RIGS. Next, we will introduce to you the six commonly used drill bits in the construction of rotary drilling RIGS.

1. Short helical drill bit: With large blade spacing and long pitch, it is suitable for rapid drilling in soft soil layers such as clay and silt. The soil debris is conveyed to the surface through helical blades, achieving high drilling efficiency.

2. Common drill bit: It has a simple structure and strong versatility, suitable for various loose soil layers such as sandy soil and silty clay, and can meet the requirements of conventional pile foundation construction.

3. Sand-picking drill bit: Equipped with a retractable valve, it is specifically designed for picking up sediment and loose sand layers at the bottom of the hole to ensure the quality of the hole formation. It is widely used in the construction of Bridges and building pile foundations.

4. Cylinder drill: It has a cylindrical structure with cutting teeth at the end. It is often used in hard strata such as hard rock and pebble layers. It gradually breaks the rock through circular cutting, making it convenient to remove the core.

5. Bottom expansion drill bit: It can expand the bottom after hole formation, increasing the load-bearing area of the pile foundation. It is suitable for projects that need to enhance the load-bearing capacity of the pile foundation, such as large-scale building foundation construction.

6. Impact drill bit: It relies on gravity impact to break rocks and is suitable for handling extremely hard rocks, boulders and other complex strata. When used in conjunction with rotary drilling RIGS, it can handle various high-difficulty construction scenarios.

To sum up, the commonly used drill bits in rotary drilling rig construction each have their own characteristics and applicable scopes. From soft soil to hard rock, from conventional drilling to special bottom expansion requirements, different drill bits perform their respective duties. During construction, the drill bit should be reasonably selected based on specific geological conditions and engineering requirements to ensure construction efficiency and quality.