PDC core bit is an efficient drilling tool widely used in oil, gas, and geothermal well drilling. Its unique design and material combination enable it to perform well in various geological conditions and is widely used in rapid drilling operations in various formations. The 6 5/8 inch PDC core bit is currently one of the most efficient, economical, and widely applicable drilling tools on the market.

Bits Specification

Ruishi Bits Model Description

For details, please refer to the official website of Hebei Ruishi Bits Manufacturing Co., Ltd：

https://www.ruishibit.com/

Characteristics of Core Drill bits

Diamond core drills are generally divided into polycrystalline diamond cutters (PDC) core drill bits and natural diamond core drill bits.

Among them, PDC core drilling bits are commonly used due to their good stability, long service life, high drilling efficiency, good gauge effect, wide range of applications, and superior cost-effectiveness. They can be widely used in rock drilling and rock core sampling pile inspection in geological exploration, coalfield mining, water conservancy and hydropower construction, highway and railway construction. According to different lip shapes and tire body formulas, it can adapt to the coring of various complex rock formations, and the core drilled provides reliable data for geological and engineering research.

Structural Design and Materials
Adopting a hollow thin tube structure or a blade shaped arc-shaped cutting structure, integrated polycrystalline diamond cutters (PDC) or natural diamond is used as the main cutting teeth, and high-quality steel is often used for forging the substrate. This design improves cutting efficiency and optimizes the core fracture structure through a fracture device, ensuring smooth discharge of the core.
The composite cutters combine the high hardness of diamond with the impact resistance of hard alloy, and some high-end models enhance performance by adding trace elements or using spherical diamond blades. In addition, its crown adopts a shallow parabolic design, which helps to maintain the stability of the aperture and improve the coring rate.

Wear resistance and long service life
The PDC core drill bit uses high-quality TSP polycrystalline diamond composite cutters, which have excellent wear resistance and impact resistance. This material not only improves the service life of the drill bit, but also maintains stable operation at high speeds and pressures. Its lifespan is several times that of ordinary hard alloy drill bits, and the high wear resistance of the composite cutters significantly reduces the frequency of grinding. Excellent gauge performance, which can effectively control the regularity of wellbore diameter and extend the overall service life of the drill bit.

High efficiency and high core extraction rate
PDC coring drill bits have efficient cutting capabilities, breaking rocks through scraping and shearing, enabling low-pressure and low-speed drilling. They also have high mechanical drilling speed and coring efficiency, with a feed rate far exceeding that of ordinary drill bits. Their design optimizes the waterway structure to ensure smooth discharge of rock powder, avoid blockage, and further improve coring efficiency.

Adaptability and Scope of Use
PDC core drill bits are suitable for various geological conditions, including soft to medium hard rock formations, formations with soft interlayers, and coal seams. Its design can adjust the crown shape and teeth according to different geological strata to meet various complex geological requirements.
Core drilling bits are widely used in coal mines, geological exploration, water conservancy and hydropower, highway and railway tunnels and other fields due to their fast drilling speed, long service life, reduced number of trips, and reduced overall drilling costs.

Frequently Asked Questions

Q: What are the advantages of our 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 to find the drill bit model you need on the website?

A: You can search for the products you need in the "Product" of the station based on information such as "drill bit size", "main cutting tooth specifications", "number of blades", etc.

Q: If you can't find the model you need? Do you know how to choose the desired model? How to customize products?

A：Please click CONTACT or MESSAGE to let us know your needs. We will contact you soon and provide professional advice in the following areas.

Q: How long does it take for customized products to arrive?
A: Generally, it takes 3 days to complete the sample model and 15 days to ship during peak season, using land, sea, air, or other transportation methods.
 

Q: How to solve your technical doubts? How to inquire about a price?
A: Please contact email rszwt2023@ruishibit.com Or WeChat zom2077, we will arrange professional personnel as soon as possible to solve your technical doubts one by one and provide you with a price quotation.
 

Q: What accessories do our drill bit products have?
A: There will be relevant instructions provided after packing.
 

Q: What other related products or services does our company have?

A: Our company not only produces various types of PDC drill bits and tricone 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 Qualification

Hebei Ruishi Bits Manufacturing Co., Ltd. established in 1990 is a long-term first tier supplier of CNPC, Sinopec, and CNOOC. 

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Plants

PDC bits production

Tricone bits production

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 bits, various types of tricone bits, core 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 customers' needs.

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, whose details on the "Honor" page.

Blanking, Selected material 42CrMo

Rough turn, Within the error range, accurately measure the diameter

Nondestructive detection

CNC precision turning the crown profile of bit

Use the machining center to mill the bit blade and channel groove

Use Five axis machining center to Drill and mill tooth cavity holes and nozzle holes

Bit body machining, assembly joint

Bit body and joint butt welding

External circular machining of bit body and joint butt welding

Clean bit tooth cavities, replace each piece with graphite and ensure that it passes the trial assembly

Surface Strength Hardening of Drill Crown Blade, Weld the surface of the drill bit crown blade

Clean bit tooth hole and nozzle hole, polishing and sandblasting

Braze, check the brazing condition of each tooth cavity to ensure that the fiber welding layer is wet, penetrating, substantial, and full, finally nondestructive detection

Clean bit, grind the gauge

Bit embellish, painted evenly the surface of the bit, and the steel grade shall be marked and protected according to the identification regulations

Packaging, The bit, factory data, attachments, and markings are consistent and accurately proofread

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, Zhongyuan, Jidong, and North China. Ruishi has also established long-term strategic partnerships with these oil fields.

Our product quality and timely and thoughtful service stability have been highly recognized by customers. The company's products have been widely exported to countries and regions such as North America, the Middle East, and Russia.

American customers’ inspection

Russian customers’ inspection

Brazilian customers’ inspection

Brazilian customers’ inspection

2024 Russian NEFTGAZ

2024 Iran Oil and Gas Exhibition

2025 Russian NEFTGAZ

2025 OTC Houston USA