Insert Alignment Block
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IADC437, tricone bits with TCI tooth for extremely soft formations with low compressive strength and high drillability
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Tricone Bits
Product details
Tricone bits are advanced rock-breaking tools widely used in drilling operations. Their high efficiency, stability, and adaptability make them ideal for rapid drilling in various formations. The IADC437 tricone bit is one of the most efficient, economical, and versatile drilling tools currently available on the market.
Bit Specification
IADC Code | IADC437 | ||
|---|---|---|---|
Bit Size (in) | 8 1/2" | 9 1/2" | 12 1/4" |
Bit Size (mm) | 215.9 | 241.3 | 311.1 |
Connection | 4-1/2" API REG | 6-5/8" API REG | 6-5/8" API REG |
Tooth Type | TCI | ||
Recommended RPM (r/min) | Rubber Seal: 240-80 Metal Seal: 240-70 | ||
Recommended WOB (KN/mm) | Rubber Seal: 0.40-1.0 Metal Seal: 0.35-0.9 | ||
Net Weight (kg) | 38 | 58 | 98 |
Gross Weight (kg) | 40 | 60 | 100 |
Packaging Dimension (mm) | 255×255×405 | 300×300×445 | 355×355×475 |
Suitable Formations | Suitable for low compressive strength, highly drillable extremely soft formations such as clay, mudstone, gypsum, and soft limestone. | ||
Structural Features | ◆ Wear-resistant coating. Carbide wear-resistant material is applied to the palm tip and the edge of the tooth palm, increase wear resistance and life of the bit. ◆ Carbide centralizer embedded on the surface of palm. Reduce the wear of bit grinding formations, oblique well and horizontal well, improve the life of bit. ◆ Gauge inserts of high-quality tungsten carbide alloy. Reduce the wear of bit in grinding formations, improve the stability and life of bit. ◆ High quality tungsten carbide tricone tooth. Reduce wear, increase the crushing capacity and life of bit. ◆ Optimize water conservancy structure. Enhance the self-washing ability and life of bit. | ||
Ruishi Tricone Bit Model Description
For details, please visit the official website of Hebei Ruish Bits Manufacturing Co., Ltd.:
https://www.ruishibit.com/
IADC | IADC Code |
|---|---|
4 | 1, 2, 3: TCI tricone bits, suitable for gradually hardening formations; 4, 5, 6, 7, 8: Milled tooth tricone bits, suitable for gradually hardening formations |
3 | 1, 2, 3, 4: Bit's depth crushing ability adapts to formations from soft to hard |
7 | 1: Standard open rolling bearing; 2: Standard open air-cooled rolling bearing; 3: Standard open rolling bearing with shaft diameter protection; 4: Sealed rolling bearing; 5: Sealed rolling bearing with shaft diameter protection; 6: Sealed radial bearing; 7: Sealed radial bearing with shaft diameter protection |
Characteristics of Tricone Bits
Tricone bits, with their high efficiency, stability, and adaptability, have become indispensable tools in modern drilling operations. Their comprehensive characteristics can be summarized in the following aspects:
Structural Features
Tricone bits typically consist of cones, bearings, water passages, and nozzles. The core function is rock breakage through rotation and pressure. The cones are studded with cutting teeth that alternately contact the well bottom, effectively reducing wear and improving drilling efficiency. Tricone bits are classified by the number of cones: single, double, triple, and multiple, with tricone bits being the most common due to their good balance and high drilling efficiency.
The bearing system is a crucial component of the bit, typically using rolling or sliding bearings. The bearing inner race mates with the cone shaft, ensuring stability and wear resistance during high-speed rotation. The bit's locking system, including ball locking and thrust bearings, secures the cones and withstands axial loads.
Gauge Teeth
Ballistic Teeth
Trimming Teeth
Six-Point Stabilization System
Nozzles
Multi-Row Cone Teeth Design
Wear-Resistant Coating
Insert Alignment Block | Embedding tungsten carbide alignment blocks on the insert surface reduces bit wear during grinding formations, deviated wells, and horizontal well operations, extending bit service life. |
|---|---|
Gauge Teeth | High-quality tungsten carbide alloy insert bits reduce drill bit wear in abrasive formations, improving drill bit stability and service life. |
Ballistic Teeth | Spherical tooth profiles offer better bending strength, further improving drill bit wear resistance and service life, suitable for highly abrasive hard formations. |
Trimming teeth | Protects the bit shoulder and cutting structure, reducing the impact of high temperatures on bearing sealing during drilling, improving drill bit durability and mechanical drilling speed. |
Six-Point Stabilization System | This design aims for the tricone bit to contact the wellbore through six force points during drilling, more effectively improving the stability of the drill bit and protecting the integrity of the cutting tooth structure. |
Nozzles | Three combined nozzles are arranged on each drill bit to optimize the drill bit hydraulic system, balance fluid flow, and facilitate bottom hole cleaning and prevent mud cake buildup. |
Multi-row Roller cone bit design | Improves drilling efficiency without reducing the mechanical drilling speed of the drill bit, better disperses drilling pressure, and improves the balance of the drill bit. |
Wear-Resistant Coating | Welding tungsten carbide wear-resistant material to the tricone bit shoulder and tooth edge enhances the wear resistance of the drill bit and improves its service life in abrasive formations and directional drilling operations. |
Rock Breaking Mechanism
Tricone bits break rocks through the impact, shearing, and crushing action of the cutting teeth. They have high rock breaking efficiency and strong adaptability, capable of handling various formations from soft to hard. In addition, composite tricone bits combine the advantages of milled tooth bits and TCI teeth bits, further improving rock breaking efficiency and service life.
Performance Advantages
Tricone bits have the characteristics of small contact area, high specific pressure, low torque, and long cutting edge length, resulting in high efficiency and stability during drilling. For example, composite tricone bits combine the advantages of three-cone bits and disc bits, significantly improving mechanical drilling speed and extending service life.
Application Scope
Tricone bits are suitable for various geological conditions, including oil exploration, water wells, geothermal wells, coalbed methane wells, and mining. Their design can be adjusted according to the characteristics of different formations to meet the needs of complex formations.
Differences in Characteristics Between Milled tooth Bits and TCI Bits
Insert bits have a longer service life and are suitable for medium-hard to extremely hard formations. They are more expensive but better suited for long-term operations; steel teeth, due to material and structural limitations, have a shorter service life and are suitable for soft to medium-hard formations, but are less expensive and suitable for rapid drilling. Insert bits and steel teeth each have advantages and disadvantages; the choice of which type of roller cone bit to use depends on the specific geological conditions and drilling requirements.
TCI
Milled tooth
Tooth Profile | TCI | Milled tooth |
|---|---|---|
Materials and Manufacturing Methods | Hard alloy (such as tungsten carbide) is embedded in the outer tooth ring of the roller cone bit. After drilling, the alloy teeth are embedded to form the bit. This process gives the insert bits high wear resistance and impact resistance. | Directly milled from the roller cone blank, usually using a wedge-shaped tooth design. To improve wear resistance, the surface of the steel teeth is often welded with a layer of hard alloy powder or tungsten carbide powder. |
Suitable Formations | Suitable for medium-hard to extremely hard formations, such as hard rock or highly abrasive rocks. The hardness and wear resistance of insert bits are superior to steel teeth, so they perform well in highly abrasive formations. | Mainly used in soft to medium-hard formations, such as mudstone, shale, and sandstone. Its design goal is rapid drilling, so the tooth shape is wider and longer to adapt to lower abrasiveness formations. |
Tooth Design / Gauge Holding Capability | Various shapes, including spherical, conical, and wedge-shaped, are selected depending on the formation characteristics. For example, in hard formations, short conical or spherical insert bits are often used to improve compressive strength and rock breaking efficiency. | To prevent excessive wear of the drill bit diameter, milled tooth tricone bits usually have trimming teeth on the outer row of teeth or use special shapes (such as T-shaped, L-shaped) to enhance gauge holding capability. |
Service Life | Higher wear resistance, its service life is usually longer than steel teeth, especially in hard formations. | Shorter service life, especially in hard formations where it is easily worn, but its cost is lower, suitable for rapid drilling needs. |
Differences in Characteristics Between Rubber Seals and Metal Seals
Rubber seals and metal seals each have advantages and disadvantages. The choice should be made based on the specific working conditions and economic budget. For demanding conditions, metal seals are the better choice; for cost-sensitive projects or softer formations, rubber seals are more suitable.
Rubber Seal
Metal Seal
Sealing Method | Rubber Seal | Metal Seal |
|---|---|---|
Sealing Principle and Structure | Rubber seals mainly rely on highly elastic materials such as nitrile rubber or chloroprene rubber to achieve sealing through radial compression. They are characterized by simple structure and low cost, but have poor high-temperature and wear resistance, and are easily damaged by wear, leading to reduced sealing effect. | Metal seals consist of two metal rings and two elastic rubber functional rings. Tension is generated by the relative movement of the metal rings, causing the metal rings and rubber rings to tightly combine, thus achieving sealing. Metal seals have higher sealing reliability and are suitable for high-speed and high-pressure environments, but the manufacturing cost is higher. |
Service Life and Reliability | Due to the low elastic modulus of rubber materials, they are easily damaged by wear during long-term use, leading to a decrease in sealing performance. Therefore, the service life of rubber seals is relatively short, especially under high-speed or complex working conditions. | Metal seals offer higher reliability. Their design, combining metal rings and rubber seals, effectively resists wear and high-temperature, high-pressure environments, extending service life. Furthermore, metal seals generate low frictional heat, making them suitable for high-speed operations. |
Applicable Scenarios | Suitable for scenarios with soft formations, shallow well locations, and low bit requirements. Rubber seals are inexpensive and suitable for cost-sensitive projects. | Suitable for applications with high bit requirements, such as hard rock formations, high-temperature, high-pressure well sections, and high-speed operations. |
Performance Advantages and Disadvantages | Advantages include low cost and simple structure; disadvantages include poor high-temperature and wear resistance, and susceptibility to failure due to wear. | Advantages include high sealing reliability, high-temperature and high-pressure resistance, and long service life; disadvantages include high manufacturing cost, sensitivity to vibration, and high installation precision requirements. |
Technical Improvements and Development Trends | In recent years, the development of new materials (such as hydrogenated nitrile rubber HNBR) has improved their high-temperature and wear resistance, but they still cannot completely replace metal seals in complex working conditions. | The double metal floating seal structure is gradually becoming mainstream. It combines the high strength of the metal ring and the elasticity of the rubber ring, further improving sealing performance and service life. |
Technical Improvements and Innovations
With the application of new materials and new processes, the performance of tricone bits has been significantly improved. For example, composite tricone bits combine the advantages of insert teeth and steel teeth, not only improving rock breaking efficiency but also enhancing wear resistance and adaptability. In addition, the design of new tricone bits focuses on optimizing tooth arrangement and strengthening surface treatment to adapt to more complex geological conditions.
Frequently Asked Questions
Q: What are the advantages of your company?
A: Our company integrates R&D and manufacturing. We are a bit manufacturer with over 30 years of experience in the industry, providing customers with efficient one-stop services including design and development, customized suggestions, manufacturing, direct sales, and after-sales support.
Q: How can I find the bit model I need on the website?
A: You can search for the product you need in the "Product" on the website using information such as "IADC code" and "tooth type".
Q: What if I can't find the model I need? What if I don't know how to choose the right model? How to customize products?
A: Click here Contact Us or Message and let us know your needs. We will contact you shortly and provide professional advice in the following areas.
| Bit Type | 2 "-26" full size PDC bit (steel body bit / matrix body bit), tricone bit, core bit, hybrid bit, other drilling tools, etc |
|---|---|
| Bit Parameters | PDC bits (blade number, cutting tooth specifications, composite cutters type, connection), tricone bit (tooth type (TCI/milled tooth), sealing form…) |
| Drilling Information | Logging information, well depth and type (oil well, natural gas well, geothermal well, water well...) |
| Rock Type | Limestone, dolomite, sandstone, clay rock, shale, etc Rock hardness level 1-7, from soft to hard, or "extremely soft, medium soft, soft, medium hard, hard, extremely hard" |
| Geographic Location | Domestic and foreign, specific sections, and transportation weight |
| Other technical questions | - |
Q: How long does it take for customized products to arrive?
A: Sample models are generally completed in 3 days, and shipments during peak season take 15 days. Transportation methods include land, sea, air, or other methods.
Q: How can I resolve technical questions? How can I get a quote?
A: Please contact rszwt2023@ruishibit.com or WeChat zom2077. We will arrange a professional to address your technical questions and provide a quote as soon as possible.
Q: What accessories are included with your drill bits?
A: There will be relevant instructions in the packaging.
Q: What other related products or services does your company offer?
A：Our company not only produces various types of PDC drill bits and three cone drill bits, but also manufactures hydraulic oscillators, roller cone hole openers, engineering palm films, rotary drilling tools, downhole motor and diamond wire drawing die blanks. If you have any other industry related questions, we will do our best to answer them for you.
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Company Qualifications
Hebei Ruishi Bits Manufacturing Co., Ltd. established in 1990 is a long-term first tier supplier of CNPC, Sinopec, and CNOOC.
We have a group of technical experts who have been engaged in drill bit design for more than 30 years, advanced five axis machining centers, and a large number of CNC machine tools, which can produce 2 "-26" full model PDC drill bits, various types of tricone drill bits, core drill bits, composite drill bits, hydraulic oscillators, roller cone hole openers, engineering palm films, rotary drilling tools, downhole motor and diamond wire drawing die blanks, which can be customized according to customer’ needs.
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We strictly adhere to the ISO9001 quality management system, ISO14001 environmental management system, and ISO45001 occupational health and safety management system in our enterprise operations, and strictly implement the API-7-1 quality management standard in the production process. For details, please go to the Honors page.
Tricone Bits
Roller Cone
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The company is equipped with a dedicated fleet, located in a location with developed transportation, close to the Beijing Kowloon Railway and the Daguang Expressway, and the Jinbao South Line crosses east-west.
The sample molding is completed in 3 days, and the peak season shipment can arrive on the 15th. Our drill bits have undergone 30 years of rigorous research and development, and have received a high praise rate of over 99% from customers.
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Ruishi's products are widely used in major oil fields such as Tarim, Tuha, Changqing, Dagang, Sichuan, Central China, Jidong, and North China, and we have established long-term strategic partnerships with them. The stability of our excellent product quality and timely and thoughtful service has been highly recognized by our customers. Our products have been widely exported to countries and regions such as North America, the Middle East, and Russia.
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