Mining Drilling Three Cone Rock Roller Tricone Bit Multiple Sizes

Tricone Bit Description
Roller bits, with their core advantages of strong geological adaptability and stable rock breaking efficiency, are widely used in various fields such as oil and gas drilling, geological exploration, and mineral extraction, especially in scenarios that require dealing with complex formations and different well types. Its specific scope of application can be divided into two dimensions: "application field" and "adapted formation/well type"

Drilling rig parameters

In addition, there are some large-sized three cone drill bits, such as 26 inches (660 mm), 36 inches (914.4 mm), etc., mainly used for some special large-scale engineering or oil drilling projects.

I. Core Application Fields

1. Oil and Gas Drilling (The Most Important Field)

• Exploration Wells: Used to verify whether oil and gas resources exist underground. Facing unknown formations, the strong adaptability of roller cone bits can reduce the risks of sticking and tooth breakage.
• Development Wells: Used to extract proven oil and gas reservoirs. Balancing efficiency and cost is required, and the long service life and low cost per footage of roller cone bits can significantly improve mining economy.
• Directional Wells/Horizontal Wells: These wells have complex wellbore trajectories (needing direction changes or horizontal extension). Through optimized gauge protection structures (e.g., active gauge protection, high-wear-resistant composite material gauge protection), roller cone bits can stably control the wellbore direction and reduce the risk of wellbore collapse.

2. Geological Exploration and Hydrological Drilling

• Geological Exploration: Used to detect underground minerals (e.g., coal, metal ores), rock formations, or geological structures. Drilling in formations of different hardness (from soft clay to hard sandstone) is required. Roller cone bits can adapt to such needs by replacing different types of cutting teeth (e.g., cemented carbide teeth, diamond composite teeth).
• Hydrological Drilling: Used to dig water wells (for groundwater extraction) or detect groundwater levels. Balancing drilling speed and wellbore stability is necessary. The low-torque characteristic of roller cone bits can reduce damage to aquifers and ensure water yield.

3. Mineral Resource Mining

• Coal Mining: In underground coal mines, it is necessary to dig transportation roadways, return air roadways, or drill holes (for gas extraction). Roller cone bits can adapt to alternating formations of coal seams (soft) and roof/floor rock layers (hard, e.g., shale, limestone), avoiding frequent bit replacement.
• Metal Ore Mining: Used to dig vertical shafts, inclined shafts, or exploration drill holes. Facing hard formations such as magmatic rocks (e.g., granite) and metamorphic rocks (e.g., gneiss), the high specific pressure design (small contact area between cutting teeth and well bottom, high pressure) of roller cone bits enables efficient rock breaking.

4. Other Special Fields

• Geothermal Drilling: Used to extract underground geothermal energy (e.g., geothermal power generation, geothermal heating). Drilling in deep wells with high temperature (up to 200-300℃) and high pressure is required. The high-temperature sealing and lubrication system of roller cone bits (e.g., lubricating grease resistant to temperatures above 250℃, high-elasticity sealing rings) can ensure their reliability in extreme environments.
• Engineering Construction Drilling: Such as bridge pile foundation drilling and tunnel advanced geological drilling. Rapid hole formation in complex shallow-surface formations (e.g., pebble layers, weathered rock layers) is needed. The impact resistance of roller cone bits can reduce cutting tooth breakage and improve construction efficiency.