8 3-4" Tricone Rock Bit IADC747 Roller Bit For Very Hard Rock Drilling

8 3-4" Tricone Rock Bit IADC747 Roller Bit For Very Hard Rock Drilling

The 8 3/4" Tricone Rock Bit IADC747 is a three-cone rock drill bit designed for hard rock formations and is suitable for oil, gas, water well and geothermal drilling operations.

The drill bit adopts tungsten carbide tooth (TCI) structure, which has the characteristics of strong wear resistance and high drilling efficiency. It is recommended for sandstone, limestone and shale formations containing hard interlayers (such as flint and quartzite).

Tricone bits are used in a variety of drilling applications, including oil and gas exploration, mining, water well drilling, and geothermal drilling. They are designed to be durable and long-lasting, with the ability to withstand the high temperatures and pressures encountered during the drilling process.

‌1. Structural Design and Materials‌
The tungsten carbide cutter (TCI) structure significantly improves wear and impact resistance, making it suitable for drilling in medium-hard to hard rock formations with a compressive strength of 15,000-25,000 psi (such as flint and quartzite).

The bearing system utilizes a rubber seal design and high-temperature grease, capable of withstanding axial loads exceeding 50,000 psi and adapting to high-temperature and high-pressure environments found in deep wells.

‌2. Performance Optimization‌

The staggered cutter arrangement effectively reduces harmonic vibration, preventing premature drill bit failure, while also improving cuttings removal efficiency.

Compared to steel-cut drill bits (such as the IADC517), TCI cutter life in hard rock is extended by 30%-50%, while also achieving higher drilling efficiency.

‌3. Applications‌
Primarily used in oil and gas, geothermal, and deepwater drilling, it excels in sandstone, limestone, and shale formations with hard interbedded layers.

The modular design supports customized cutter layouts, adapting to a wide range of geological conditions, from soft coal to granite.

‌4. Technical Specifications

Diameter: 8 3/4 inches (approximately 222.25 mm), API-compliant drill bit interface.
IADC 747 code for hard rock formations, optimized tip angle and density for highly abrasive formations.

Packing: wooden box.
Delivery: Normally15-20 days after down payment.
Shipping method: by express, by air or by sea

Glorytek Industry (Beijing) Co., Ltd. is a professional manufacturer and supplier of drilling equipment and drilling tools with more than 20 years experience. We are supported and assisted by rich experienced R & D team and engineers with strong technical force,skilled production workers and high-quality sales team, that enable us to complete all the high-quality products and services on time as per clients’ requirements.
Our factory covers an area of 250,000 square meter, construction area is about 150,000 square meter, having machining machinery, CNC processing center, friction welding machine, testing equipment etc. over 200 sets and more than 600 employees.

Our main products include: water well drilling rigs, blasthole drilling rigs, core sample drilling rigs for surface drilling and underground drilling, foundation piling rigs, horizontal directional drilling rigs, air compressor, oil and gas drilling equipment like mud pump, downhole motor, drilling tools such as drill pipes, tricone bit, pdc bit, dth hammer, hammer bit, overburden casing system, button bit, shank adaptor, reamers, wireline coring tools etc. All products are meeting international standards, with stable quality and superior cost performance.

Glorytekdrill exports products into over 60 countries, we have CE certificate, SGS certificate, the quality can be guaranteed. Our high-quality products and perfect service have won favourable comments from different customers all over the world.

Glorytekdrill will establish a long-term relationship with customers based on the concept of quality first, customer first, integrity-based, and win-win cooperation.

Q: Are you a factory or a trading company ?
A: We are an integrated corporation specialized in manufacturing and exporting.
Q: What is your payment terms?
A: We can accept T/T,L/C.
Q:.What is your MOQ?
A: No requirement for testing and trial order.

Glorytek Corporation located in China, is an integrated corporation specialized in manufacturing and exporting top quality drilling equipment and drilling parts for decades.

We are supported and assisted by a highly experienced team of designers and engineers that enable us to complete all the assigned projects successfully as per the specified requirement from our clients.Our factory covers an area of 250,000 square meter, construction area is about 150,000 square meter, having machining machinery, CNC processing center, friction welding machine, testing equipments etc. over 200 sets and more than 600 employees.

Our products are widely used in the scope of mining, water well drilling and exploration, anchor grouting project, side slope protection engineering, oil and gas engineering，underwater rock drilling & blasting operations of seaport channel, hydropower project, national defense projects ect.

Due to the continuous effort and improvement, Glorytek’s market share keeps increasing rapidly, meanwhile, the perfect after-sales service is providing a strong support and guarantee for the expanding of business cooperation. Till now, we enjoy the good reputation and our products have been winning the confidence of a lot of domestic and overseas customers like Canada, Australia, Nigeria, Pakistan, Russia, Ethiopia, Indonesia, Malaysia, etc. more than 30 countries.