The roller cone bit breaks rock by crushing and shearing. The cone is rolling at the bottom of the well, so the requirement for the torque is small, which can greatly reduce the mechanical load.

When the drill bit is working, the roller cone not only rotates around the axis of the drill string but also rotates around its own axis.

According to the number of roller cones, roller cone bits can be divided into single roller cones, double roller cones, three roller cones, four roller cones and multiple roller cones. According to the method of breaking rock, it can be divided into full-scale drilling cone bit and coring cone bit. According to the nature of the work, it can be divided into forward pilot hole drilling positive circulation roller cone bit, a pilot hole drilling reverse circulation roller cone bit, center continuous sampling cone roller bit, positive circulation reaming roller cone bit, and reverse circulation reaming roller cone bit. According to the teeth and structure of roller cones, it can be divided into steel teeth and embedded roller cone bits. When using it, it is necessary to choose the adaptation range of its tooth shape according to the local conditions.

The roller cone bit is used for drilling and has a wide range of applications, and it can be applied from soft formations to hard bedrock formations.

Used in the water well, and the geothermal well

In contracted water well drilling projects, the adoption of roller cone drilling accounts for more than 80%, especially in the deepwater wells and the geothermal well construction. A small number of traditional fishtail drill holes, three-blade drill bit reaming, and hard alloy steel core drilling, which is not only laborious but also lavish, causing great waste to the construction and increasing the burden. Now, there is no choice but to seek for the innovation and upgrade of the roller cone drilling.

Used in the gas mining

Safety accidents occur frequently in coal production. CBM wells are generally drilled with roller cone bits in the first opening, and pneumatically by DTH hammers in the second opening. Due to the large diameter of the gas discharge well and there are certain requirements about the verticality of the hole. Therefore, the three roller bits are generally used to drill the front pilot holes, and then the roller cone drills are expanded to form the well.

Used in the trenchless project

In the construction of trenchless crossing project, in addition to using winged carbide back-expanding drill bits in loose formations, some bedrock formations also need to use roller cone welding back-expanding drill bits to complete the task. It mainly uses roller cone reamer and PDC reamer.

Used in the foundation construction with large diameter pile

In the construction of building and bridge foundation engineering, rock-socket piles with large diameter and high bearing capacity are often required. The previous method is to use cemented carbide and steel grain drilling, but now, the traditional drilling process has been replaced by the roller cone drilling process, which is of simple operation and strong adaptability. It can realize non-circulation drilling, mud forward circulation drilling, reverse circulation drilling and bottom expansion pile drilling. The main tool is a barrel drill. If it are co-used with a replaceable tooth palm piece, the rock will be broken evenly, with high efficiency, low cost, and the quality of the drilled hole will be better.

Cangzhou Great Drill Bits Co.,Ltd. is a drill bit manufacturer, we have china drill bit for sale, rock drill bit, single roller cone bit and etc. For more information, please feel free to contact us!

Our pdc bit breaker and bi-center bit, PDC reamer with iron packaging, equipped with high-quality shackle device, convenient for the extraction and installation of the bit; The special suspension design can better guarantee the safety of the PDC bit crown composite during transportation. Generally speaking, our PDC bit package with bit breaker and extra nozzles if needs.

Our Tricone bit package is a carton box with our logo or wooden box according to customer request.

We guaranteed all the packages are safety for shipping and the packaging material is allowed to export. Our good quality packages also can be used more times.

Depends on the orders quantity, we have the below shipping suggestions:

DHL: Sample bit; Door to Door, fastest.

By air: Urgent orders.

By ocean or by Train: Normal orders.

We have organized the shipping department, they will arrange all the shipping if the sales department sends a request shipping. Firstly, we will check the safest, fastest, and cheapest cargo shipping company shipment the bits to China Port. Our broker will arrange to load according to the customer request, and the tracking number or BOL will be provided when sailing. Also will be checking the ETA. So that our customers can arrange customs our bits.

Great Drill Bits is a drill bit manufacturer, we have china drill bits for sale, rock drill bit, wholesale roller bit core barrel and etc. For more information, please feel free to contact us!

GREAT has customized manufacture several roller cone bit types. Our drill bit roller cone includes the 90 ° U-shaped Roller Bit series and the 120 ° U-shaped china roller bit series. All these two types have designed Starry Sky Roller Bit.

The cones are designed with more full insert than the traditional tricone bit cutter.

Roller Cone Bits For Sale

90 ° U-shaped Roller Cone Bit Design

Overview Roller bitGREAT has customized manufacture several types of roller bit . It is including 90 ° U-shaped Roller Bit, 120 ° U-shaped Roller Bit and Starry Sky Roller Bit. The 90 ° U-shaped Rol…

120 ° U-shaped Roller Bit

Overview 120 ° U-shaped Roller bitGREAT has customized manufacture several types of roller bit . The traditional roller bit was cut by tricone bit . So it is including No.1 ,No.2, No.3 Cone cutters ….

Starry Sky Roller Bit

Overview Starry Sky Roller BitGREAT has customized manufacture 90 ° U-shaped Roller Bit, 120 ° U-shaped Roller Bit and Starry Sky Roller Bit.The Roller bit mainly used for Rock reamer (Hole opener) …

1. 90 ° U-shaped Roller Bit is straight legs of tricone bit, it is a special model made by Cangzhou Great Drill Bits Co.,Ltd.

But also we have designed roller bit with foundation, it can replaceable the roller bit, in this case, you will not worry welding on the rock reamers. High precision bearing surface heat treatment adopts advanced heat treatment technology to improve bearing capacity and service life.

2.120 ° U-shaped Roller bit. The traditional roller bit was cut by tricone bit.

So it is including No.1, No.2, No.3 Cone cutters.

The Roller bit mainly used for Rock reamer (Hole opener) For HDD (Horizontal directional drilling ) Trenchless technology. But also used for Core barrel with roller bit, like pile foundation project.

3. Full cutter layout (Starry Sky Roller Bit), fast assembly way of bit leg avoid heating problem of soldering, which extend lifetime of bearing.

Replaceable cutter rock reamer is designed for big rig and big hole drilling, fit for all sorts of rock formation.

High precision bearing surface heat treatment adopts advanced heat treatment technology to improve bearing bearing capacity and service life.

The Starry Sky Roller Bit has 90 ° U-shaped Roller Bit and 120 ° U-shaped Roller Bit.

The cone units of Great Roller Cone Cutters are replaceable and each main body of the Hole Openers can be used many times,thus saving the cost for the customer.

The strength and wear resistance of inserts are improved by using carbide inserts with high strength and high wear resistance.

We also provided OEM service if you have your own design and NDA with the contract.

Just feel free to tell me if you have any needs.

Roller Bit Application

WATER WELL

Tricone bit is the best choice to water well drilling from 300meters to 1500meters.

DRILLING

Drilling in day and night, GREAT provide 7/24 service online.

As professional roller bit manufacturers, we will do our best to meet all the needs of customers.

There are many mining drill bit manufacturers in China, but we are one of the best choices for you.

Overview of Rock Reamer Hole Opener

The Rock hole reamer bit produced by GREAT company is used to expand the diameter of the pilot hole and is mainly used for horizontal directional drilling of oil, natural gas, electric power, and other pipelines. The hdd rock reamer is designed for reaming a variety of rock formations in the ground. We can design and manufacture the hdd rock reamers size from 10” to 72” .

The cutting teeth of the cone use TCI cutters or Steel tooth cutters. And the teeth have good wear resistance and the speed of the drill is fast. Intensive palm tip welding and full palm back protection, the cones are divided into back dimension and the diameter is protected by a protective design to effectively enhance the resistance of the drill bit.

We have our patent cutters for roller reamer drilling.

Apply wear-resistant alloy or carbide tooth on the front stiffener or block surface. In order to reduce the weight of the rock reamer hole opener without affecting the support strength, the front centralization plate adopts a hollow design.

We can first design acccording to the project requests and confirmed drawings before production, stirctly quality control in production, Final inspection before shipping .

If you have any coming HDD projects , just feel free to contact with me.

The Advantage of Rock Reamer & Hole Opener

The hole opener produced by Cangzhou Great Drill Bits Co.,Ltd. is a low-torque reamer that can be reamed with a small rig to reduce drilling costs.

The cone unit on the GREAT hole opener also can be replaced, and a set of bodies can be used multiple times, saving engineering costs for customers.

The production of large-size tricone bit or multi-cone drill bits is not only difficult to process but also extremely costly.

The use of GREAT rock reamer can solve these problems, and manufacturers can produce various sizes of hole openers according to customer requirements.

We are one of the biggest Rock reamer manufacturing companies in Asia, and is qualifed as suppler for CNPC, Sinopec and CNOOC.

If you want to know more kinds of drill bits and reamers and under reamers hole openers, please contact us.

As a reliable PDC bit company, we will do our best to meet all the needs of customers.

Overview RC Drill Bit

RC OEM PDC bit facility from GREAT are manufactured from AISI 4145H heat-treated steel. Reverse circulation drill bits are widely used in geological exploration samples, oil wells, mining, and other fields. The reverse circulation drilling method combined with RC drill bit and hammer is the preferred drilling method for initial exploration, ore body development, and other exploration drilling. By completing the drilling project objectives within the budget, reverse circulation drilling with RC bit provides a more cost-effective drilling method.

The Specification of RC Drill Bit

Reaming Size	12 1/4″	Nozzle Qty	3NZ
Pass Thru Size	10 1/2″	Gauge Length	2.5″
Blade	5	Connection	6 5/8″ API REG
Primary Cutter Size	16mm	Make up Torque(kN.m)	51.7~56.9
Rotary Speed(rpm)	60~260	Weight on Bit(KN)	30~260
Max.WOB(KN)	180	Flow Rate(lps)	35~70

The Advantage of RC Drill Bit

The raw material of GREAT’s RC diamond PDC bit is heat-treated steel and has a strict inspection tracking report.

Unlike the traditional center flush circulation, our Reverse Circulation PDC Bits save a lot of fuel and other operating-related costs.

Reverse circulation drilling can obtain preliminary geological data before analyzing cuttings samples and investing in detailed geological data for exploration coring plans. Reverse circulation is also faster than coring, which means drilling more holes.

We design RC PDC drill bit according to customer requirements and formation conditions. As one of the most trusted drill bit manufacturers in China, GREAT has professional staff and precise equipment to get the best drill bits for customers.

Using our drill bits can help you increase efficiency and maximize your operations, and we have comprehensive after-sales service and technical support.

Reverse Circulation Drill Bits Price

Reverse Circulation Drill Bits price varies based on material and type. The cost of the reverse circulation bit （rc drill bit）is an important part of the equipment in order to increase efficiency and quality of use, which is why you cannot compromise on their quality. All reverse circulation bits are submitted to strict quality control by Great Drill Bits to ensure that you always get maximum satisfaction. Contact us to get a quotation on a custom rc bit.

Now the price of china rock drill bit is affordable, anything you need, please contact us.

Overview of PDC Hole Opener

PDC hole openers is designed for the enlargement of pilot holes and large hole applications. They are also used for road and river crossing applications.

The hole opener is made of AISI 4145H fully heat-treated alloy steel. All products have carbide grinding teeth and inserting tools. Body and cutters are hard-faced in three different designs with different conditions and rock formations. We also can design of the PDC hole opener blade allows replaced in the field.

We offer innovative drilling technology to mitigate drill string vibration during reaming. GREAT HDD hole opener solution can help you solve your challenges, whether you use a rotary steerable drill combination, a rotary motor drill combination, or a traditional rotary drilling system. Our reaming tools operate at high efficiency, increase equivalent cycle density (ECD), reduce the risk of fractured formations, reduce torque and drag, and overcome drilling challenges.

The Advantage of PDC Hole Opener

The body is machined out of a single block of heat-treated AISI 4145H alloy steel.

Compared to the roller hole opener drill bit, the PDC hole opener performs better during the drilling process. The post-maintenance process is much simpler, just replace the PDC cutter, which can reduce the production cost later.

Depending on the formation and the customer’s special requirements, different sizes of PDC hole openers can be produced.

Application

Hole reamer bit are designed for the enlargement of pilot holes and large hole applications. They are also used for road and river crossing aplications.

Constructure

The hole openers are manufactured from AISI 4 145H fully heat-treated alloy steel. All are available with carbide-milled teeth and insert cutters. Arms and cutters are hardfaced for protection in three iferent designs for varying conditions and rock formations. The design of the hole opener llows for field-changing the cutters.

Cutting stucture

The reamer mainly consists of four or more cones. Cuting Structure with premium tungsten carbide hardfacing or premium tungsten carbide insert of formulas and new techniques is utilized, and increases wear-resistance capability of reamer.

We can offer kinds of hole openers for sale and HDD reamers for sale, if you have needs, please contact us.

As a rock drill bit factory, we will do our best to meet all the needs of customers.

Cangzhou Great Drill Bits Co.,Ltd., founded in 2010, specialized in processing research of steel and diamond materials, is involved in the R&D, design, production, and sales of petroleum equipment, No-Dig. Up to now, we have to be the top material supplier of CNPC, SINOPEC, CNOOC.

Overview of PDC Cutter

PDC cutters are made of diamond micro-powder and cemented carbide substrate sintered under ultra-high pressure and high temperature. It has high hardness, high wear resistance and thermal conductivity of diamond, and has the strength and impact toughness of cemented carbide. PDC cutters are widely used in oil well field PDC bit, geological PDC exploration bits, gas exploration bits, coal mining drilling applications. Various used for PDC bit, PDC core bit, and PDC hole opener, PDC reamer. PDC cutters’ performance has a decisive influence on the drilling effect and life of PDC bit.

We have built very close cooperation with Top brand PDC cutter manufacture in the USA and China, we have our patented cutters to the customers drilling demand.

Our popular size is 1913mm, 1613mm, 1616mm ,1313mm, 1308mm,1305mm.

The Advantage of PDC Cutter

1. Conical cutters

Innovative diamond element increases drilling speed, improves stability in hard-to-drill formations, Advanced rock destruction mechanism, Enhanced bit durability.

2. PDC Up-drill

Brazing high-quality OEM PDC bit cutter at a specific angle, effectively remove the obstacles, protect the bit body from harm during up-drill process.

3. Arc PDC cutters gauge

High-quality arc PDC cutters gauge, increase wear resistance and stability of the drill gauge.

If you would like to understand more about GREAT PDC cutter application, please feel free to contact with us.

As one of rock bit manufacturers, we can offer kinds of related products for sale, if you are interested, please contact us.

Focus on drilling bits for 20 years.

Among all the drill bit manufacturers in China, Great Drill Bits is famous for its specialty and service quality.

Excellent Feedback from customers: More than 20 Engineers & 100 senior technical & 50 sales and services team.

Overview of PDC Core Bit

Cangzhou Great Drill Bits Co.,Ltd. customized made Diamond core bits, which include Matrix body PDC bit and Steel body PDC bit, the diamond core drill bits for rock is used to drill an underground core (or mineral core) primarily when samples of underground rock (minerals) are required.

Every PDC core drill bit is optimized hydraulically for each cutting structure and formation application.

Each design is based on a balanced and fully covered cutting structure.

Sometimes we need to analyze the rock, so the best choice is to consult GREAT, one of the most trusted underground drill bits manufacturers in china, to get your right recommendation.

The Specification of PDC Core Bit

Bit Size and Type	8 1/2″GMC3232	Nozzle Qty	12P
Cutter Size (mm)	Φ13mm ×30	Gauge Lenghth	1.8″
Blade	12	Connection	Chuan 7-4
Operating Parameters
Rotary Speed(rpm)	40~150	Weight on Bit(KN)	40~80
Max.WOB(KN)	90	Flow Rate(lps)	10~30

The Advantage of PDC Core Bit

The PDC coring bit has designed a shallow parabolic profile and medium cutter density for coring the medium hard formation. Nozzles options according to the hydraulic request, it is installing the size of the mainly PDC cutter is 1308mm, and the most popular blade is 6 blades, 7 blades, 8 blades, to enhance the rock core drill bits’ ability to drill in hard formations. Special TSP gauge or PDC Arc-cutters to protect the diameter.

The superior patented tool testing method provides the best PDC cutter China for any challenge.

Soft to medium-hard formation with low compressive strength interbedded with hard layers.

Cab be used for different rock types: Mudstone, limestone, anhydrite.

Application of PDC Core Bit

Polycrystalline Diamond Composite (PDC) core bits were originally designed for oil drilling. The surface of the cylindrical PDC cutters consists of high-quality synthetic diamond particles sintered together by high pressure and temperature. The PDC core bits have high tool hardness, wear resistance and toughness, and the bits are widely used in oil, gas, mining and engineering drilling fields.

PDC rock core drill bits are ideally suited for use with high power drilling rigs operating at relatively low speeds, and offer much better drilling life and penetration than surface fixed bits.

PDC bit is short for Polycrystalline Diamond Compact bit. The other name for the PDC bit is Diamond bit. As one of the most professional PDC mining drill bit manufacturers in China, Great bits design and manufacture a wide variety of Matrix body PDC bit and Steel body PDC bit. Produceg by Great, a pdc drill bit manufacture factory in China, PDC bits are offered in a variety of pdc drill bit sizes, blade count, and cutter sizes.

PDC Drill Bits For Sale

Matrix Body PDC Bit

Matrix body PDC bit is made by Tungsten carbide podwer, it is very high hardness material, mainly used for deep Oil & Gas well drilling.

Steel Body PDC Bit

Steel body PDC bit is made by AISI 4145H heat treatment steel manufacture, it has lower cost compare with Matrix body PDC bit.

Bi-center Bit

This type of Bi-center bit mainly used for medium to medium hard compressive and abrasive formation.

PDC Core Bit

GREAT customized made Diamond core bits ,which including Matrix body and Steel body.

RC PDC Bit

RC PDC bit from GREAT are manufactured from AISI 4145H heat-treated steel.

PDC Bit Classification by Material：

What is PDC material? According to the production material, the oem pdc drill bit for sale on the current market can be roughly divided into the following two types:

• Matrix body PDC bit: This type of diamond PDC bit is made of tungsten carbide powder, and the gauge protection is TSP.
• Steel body PDC bit: With the AISI 4145H heat treatment steel (America standard steel ), the steel body PDC bit can be used for high-quality CNC machines milling pockets, blade, nozzles.

Most of the raw material Great uses for our diamond PDC bit is made in USA and France. Our supplier technical engineers will come to our factory to train our welder and have meetings with us so as to show their new products regularly. We communicate with our suppliers very well. So if our customers need it, we, as PDC drill bits manufacturers, can ask our engineers to have a meeting with each other face to face.

PDC Bit Classification by Application:

Mining Industry

There are some 3-blade PDC bits mainly used for the mining industry in Australia, and Russia. The formation is very soft. Choosing a Steel body PDC bit can save more drilling costs.

Water well drilling

Having higher ROP, diamond PDC bits are also widely used as water well drill bits for geothermal drilling.

Oil & Gas drilling

– Polycrystalline diamond compact bit is the most widely used bit in the field of Oil &Gas drilling. Hydraulic factors are very important to the bit during drilling.

– PDC bits have been used in areas that were previously unavailable, such as harder, more abrasive, and more variable formations.

– This expansion into the new field has a great impact on the balance between the diamond (fixed cutter bit) bit and Tricone bit.

– The diamond PDC bit is mainly composed of the bit body, cutting teeth, nozzles, gauge protection, and API Thread connection.

If your drilling has any problem, Great Drill Bits can provide a solution and service.

PDC Drill Bit Specifications

There are several key specifications to consider when selecting a PDC drill bit. These include: Blade, Cutter Size and so on.

IADC   Code	S333
Blade	6
Cutter   Size (mm)	Ø19
Face   Cutters Qty	(55)1913;(20)1613;Stinger   cutters (20)1621;
Gauge   Cutters Qty	(36)1305;
Nozzles	9
Bit   Connection	7-5/8”   API REG
Junk   Slot Area(In²)	87.3
Gauge   Length (mm)	75
Make   up Torque (kN×m)	82.5   – 90.8

IADC Code	S432
Blade	6
Cutter Size (Mm)	φ13
Face Cutters Qty	(57)1613; (36)1308;
Gauge Cutters Qty	(6)1308; (30)1305;
Nozzles	6NZ
Bit Connection	6 5/8” API REG
Junk Slot Area(In2)	29.7
Gauge Length (mm)	75
Make up Torque (Kn.m)	51.7 – 56.9

IADC Code	M423
Blade	6
Cutter Size (mm)	Φ16mm( 5/8in) ; Φ13mm(1/2in)
Face Cutters Qty	(36) Φ1613mm
Gauge Cutters Qty	(12) Φ1308mm
PDC Updrill cutters Qty	(6) Φ1308mm
Back-Up Cutters Qty	(23) Φ1308mm
Nozzles	6
Bit Connection	4-1/2” API REG
Junk   Slot Area, in2	16.4
Gauge Length (mm)	65
Make up Torque (Kn.m)	24.1-26.5

IADC Code	M232
Bit Size	8 1/2” ×   4”
Total Cutters (Qty)	32
Primary Cutter Size	1308;
Blade	6
Nozzles	6
Bit Connection	CHUAN 7-4
Gauge Length (inch)	1.5
Make up Torque (Kn.m)	13.4 – 16.3

Bit Size	12 1/4”
Blade	3
Cutter Size, мм	Φ19
Cutters Qty	(23)1913;(14)1308;
Bit Connection	6 5/8”   API REG
Gauge Length (mm)	72.5
Make Up Torque (Kn.m)	51.7-   56.9

Product Parameter
Pilot Size	4 3/4”
Pass Thru Size	6 1/8”
Drillable Size	7 1/2”
Body Type	Steel body
Blades Pilot   /Reamer	5 / 2
First Row Cutters	(36)1308;
Backup Cutters	(15)1308;
Reamer Gauge Inserts	(8)1305;
Bit Connection	3 1/2” API REG
Nozzles Pilot   /   Reamer	5 Fixed Ports (8mm x 12mm)/ 2 Small
Gauge Length	4.5”

PDC Bit Design

The advanced designing software of GREAT is the guarantee of precision and reliability of the development. Our continuous improvement for a specific application results in continuously outperforming PDC drill bits for sale than the previous ones

PDC Drill Bits Price

How much does a PDC bit cost? You may be interested in this. While PDC drill bits price varies from different materials and types. To increase the efficiency and quality of use, the PDC drill bit cost is an important part of the equipment, which is why you cannot compromise on their quality. All the PDC bits are subjected to strict quality control by GREAT to ensure that you always receive maximum satisfaction. Contact us to get the quote for your customized PDC drill bits.

PDC Bit Application

MINING INDUSTRY

GREAT 3 blade PDC bit is very popular in mining industry.

GEOTHERMAL WELL

Geothermal well are become more and more popular, so choose a right bits is much more important.

We can also offer kinds of PDC cutters for sale, anything you need, please contact us.

1. The importance of diamond drill bits for rock

In the process of geological drilling and engineering exploration, diamond drill bits are widely used drilling accessories. How to improve the service life of drill bits is a problem that drill manufacturers have been considering. The method of prolonging its service life should be considered from the three aspects of the raw material, manufacturing process and operation technology of the diamond drill.

Ⅱ. How to improve the service life of diamond drill bits for rock?

1. Raw materials

Diamond drill bit manufacturers and sales purposes are closely related. If it is a technology-based enterprise pursuing quality, they will strictly control the procurement of production materials. Only high-quality raw materials can ensure that the quality of the drill bit stands out among many brands. This is also the fundamental way to improve the service life of diamond drill bits.

2. Production process

Electroplated diamond drill bits have been developed for many years, and their production process has undergone many major changes. The production processes of different manufacturers are very different. Due to their respective operations, there is currently no complete system of diamond drill production processes that have been made public. To be sure, the production process is a direct factor in determining the quality of diamond drill bits.

3. Operation technology

If the choice of drill bit is the primary reason for its service life, then the actual operation is the secondary reason. No matter how good a diamond bit is, if there is no proper operation method, not only the ideal footage efficiency cannot be achieved, but it will also affect the wear of the bit. For example, in normal drilling, if the cleaning fluid cannot circulate normally, then the bottom of the generated high-temperature and high-speed rotation of the drill bit cannot be taken out, which can easily lead to drill bit burning accidents, not to mention the service life problem.

Cangzhou Great Drill Bits Co.,Ltd. has a 40,000 m² of production based in Hejian provincial development zone, Hebei, and several international advanced production lines featured in turning-milling compound, five-axis linkage, special for high-performance diamond processing, with the annual production capacity of more than 10,000 pcs. We provide the drill bits from 3″ to 36″, Rock reamer from 8”- 72”, Such as PDC bit, Tricone bit, Roller bit, Diamond Core bit, Bi-center bit, PDC reamer, Hole opener, etc.。

If you want to find reliable drill bit factories, please contact us.