Cangzhou Great Drill Bits Co.,Ltd.

The Application Field and the Drilling Technology of the Roller Cone Bit

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.

Our brand is GREAT, 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 drill bit manufacturers in china of CNPC, SINOPEC, CNOOC. We have 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.。

We, Cangzhou Great Drill Bits Co. Ltd., specialized in R&D, design, production, and sales various drill bits. The drill bits size from 3″ to 26″ , HDD Hole opener from 8“- 48“ , Such as PDC bit, Roller bit, Tricone bit, PDC Coring bit, Bi-center bits, Hole opener, etc. The Company consistently adheres to the concept of industrial development to promote energy development, adhered to innovative drive, scientific development, and is one of the largest scale companies in Asia for PDC bit and Tricone bit, Hole opener manufacturer.

Our PDC bit production line includes Matrix body PDC bit and Steel body PDC bit. Tricone bit is mainly Three cone bits, and according to the drilling formation different, we have TCI bit and Steel tooth bit available. In some HDD(Horizontal directional drilling ) project, we have Rock reamers for hard formation. Our Roller bit core barrel is widely used for piling foundation too.

Well Drilling Equipment Crocodile PDC Reamer for Horizontal Drilling

Overview PDC Reamer

The PDC Reamer manufactured by GREAT drill bit will be your best choice to deal with the complicated situation. Our PDC reamer brand is Crocodile.

No matter be drilling or after finish drilling, no matter what kind of formation, the“Crocodile PDC-reamer” will give you reliable, efficient drilling experience, it can increase drilling efficiency, make a more better-quality wellbore. What more, the “Crocodile PDC-reamer can prevent pipe sticking, reduce probability or malfunction.

During the drilling operation, we may have met some complicated formation, just like limestone, sticking salt and so on, the drilling stem almost be contorted like a curve of sine as the depth added. You will get a poor quality wellbore, it will be a huge challenge for tubular running. What more, reduce efficiency and need more cost.

The Details of PDC Reamer

What is the Crocodile PDC-R eamer:

Like a stabilizer;

Reduce probability or pipe-sticking;

Increase drilling efficiency;

Reduce cost;

Suit for MWD and another high-tech tool;

High-quality borehole;

Effective work with lower torque.

PDC-Reamer.jpg

The Advantage of PDC Reamer

The body of “Crocodile PDC-reamer” comprised of high-quality steel or non-magnet material, it’s so reliable that it can meet all kinds of challenges. The non-magnet material suit for MWD and another high-tech tool, it can give you unprecedented operation efficient. Compare the stabilizer or conventional reamer, the carbide inserts arrangement on the blades was design by the “equal density” principle, it can effectively cut the wall of a hole. All the carbide inserts exposed in the mudflow, it can take enough cooling and lubrication. So, the wear and tear of inserts are more slowly, and also effective work at lower torque.

The special tapered surface design ensures that the cutter is exposed to the drilling fluid. Therefore, this can clean the certification and extend its life, increase fluid flow and avoid drill bits.

As the rock drill bit suppliers, Our brand is GREAT, 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. We have 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.。

All our employees look like a big family and do our best effect to work hard and make our great drill bits. But also we all have a thankful heart, Firstly we thankful our customers choosing us, and we will supply our best service with great quality products. Secondly, we thankful we have a great team, they teach us and we bringing up from GREAT.

Bi-center bit for Mining Machinery and abrasive formation5

Overview of bi center drill bit

This type of Bi-center bit mainly used for medium to medium-hard compressive and abrasive formation, it has medium and high-density parabolic crown and heavy cutters density for the bit has good impact resistance and anti-abrasive, high wear-resistant diamond gauge, the bit has a longer service life.

In directional drill bit applications, Bi-centre bit performance usually presents performance challenges in terms of efficiency versus power availability and dynamic issues.

GREAT designed the bi-center bit to enlarge the wellbore diameter, to replace under reaming, to help control rouble zones and for expandable tubular.

The Specification of Bi-center Bit

Reaming Size	12 1/4″	Nozzle Qty	3NZ
Pass Thru Size	10 1/2″	Gauge Lenghth	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 Bi-center Bit

Our Bi-center bit is one piece body, you will never worry broken.

We can adjust the bi-center diameter according to your casing diameter. Generally speaking, the bigger pilot bit has smaller reaming size. The smaller pilot bit has a bigger reaming size.

GREAT’s casing protection features cutting structure that provides a reliable way to drill, protecting both the cutting structure inside the casing and the casing itself.

During the design process, the pilot and reamer cutting structure are force balanced as a single unit. This provides increased drilling efficiencies in both vertical and deviated wells.We have directional drill bits for sale, If you need, please contact us in time.

As the drill bit factory in china, Our brand is GREAT, 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. We have 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, clay bit, Tricone bit, Roller bit, Diamond Core bit, Bi-center bit, PDC reamer, Hole opener, etc.。

Single Cone Rock Roller Drill Bit for core barrel pilot bit

Overview of Roller Bit

GREAT has customized manufacture several types of roller bit. It is including 90 ° U-shaped Roller Bit, 120 ° U shaped Drill Bit and Starry Sky Roller Bit.

The 90 ° U-shaped Roller Bit is straight legs of tritone bit, it is a special model made by GREAT.

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. Because welding the roller bit on the rock reamers, is a high technology, to control the temperature. Our roller bit also fit for all sorts of rock formation.

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

The roller bit has metal sealed bearing and rubber sealed bearing.

The Details of Roller Bit

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

For steel tooth drills, the tooth surface is hard and has new wear resistance.

The material thus extends the life of the cutting structure while still maintaining a high ROP.

the advantage of-roller bit

90 ° U-shaped Roller Bit Advantages:

Bearing with high saturated nitrile rubber reduces sealing pressure and improves sealing reliability.

G-Gauge protection improves the gauge ability and prolong the service life of the bit.

A row of teeth is added between the back taper and the outer row to dress the wellbore and protect the body of the cone.

The application of engineering plate holder makes the construction more convenient and quick.

As the drill bit factory in china, Our brand is GREAT, 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. We have 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.。

Cangzhou Great Drill Bits Co.,Ltd. has built its enterprise technology center, obtained certification from ISO9001: 2008, ISO14001∶2004, OHSAS18001: 2007, API Spec7-1 and imported HSE management system of the petroleum industry. Therefore, GREAT is listed as a “National High-tech Enterprise”

The Drill Bits Series We Offer

We, Cangzhou Great Drill Bits Co. Ltd., specialized in R&D, design, production, and sales various drill bits. The drill bits size from 3″ to 26″ , HDD Hole opener from 8“- 48“ , Such as PDC bit, Roller bit, Tricone bit, PDC Coring bit, Bi-center bits, drill bits for rock or stone, rock boring drill bits, rotary rock drill bits, utility pole drill bits, rock roller drill bit, etc. The Company consistently adheres to the concept of industrial development to promote energy development, adhered to innovative drive, scientific development, and is one of the largest scale companies in Asia for PDC bit and Tricone bit, Hole opener manufacturer.

We can recommend the right types of rock drill bits and the best drill bit for hard rock according to your drilling request.

Well Drilling Bits

Well drilling is an engineering of rational exploitation and utilization of water resources in strata by using drilling equipment and technology.

Groundwater, on the other hand, is water that exists in cracks in the earth’s crust or in gaps in the soil.

The various states of water buried below the surface are collectively referred to as groundwater.

The influence of water cut characteristics of different structures on well yield is as follows:

Clean sand and gravel sedimentary rock is the best source of water.

This kind of structure has strong water absorption, high water content and good water permeability.

Mixed layer of sand and gravel.

The sand and gravel mixture is also a water-yielding structure.

Because of the different proportions of sand, it is a secondary water-producing rock.

The lower the sand content, the higher the water yield.

Clay structure.

Although the clay structure holds water well, it is difficult for water to move through it.

This means that the clay structure does not flood the well so it is not an aquifer.

The sandstone.

It refers to the terrigenous clastic rocks whose grain size is 0.0625 ~2 mm and the sand accounts for more than 50% of all clastic particles.

If the clay ACTS as a cement in sandstone to hold the sand together it is a poor water-yielding rock.

Limestone.

It is an excellent source of water in all sedimentary rocks.

Limestone usually has large openings such as underground karst caves that contain high water content but poor water quality.

Basalt.

The earlier beds are dense rather than good water-yielding because they are tightly packed together.

If it’s late it has spongy development it’s a good source of water.

Of hard rock.

Such rocks as granite, porphyry, and other crystalline rocks are usually poor water producers.

The worst water-yielding beds are metamorphic rocks such as gneiss schist, quartzite, SLATE and soapstone.

In order to avoid the low efficiency of well drilling, the oil standard Tricone bit specification should be selected in the design of drilling diameter.

The selection of leading hole standard cone bit must be beneficial to the processing of reaming assembly cone bit in order to reduce the processing cost of bit.

The effect of drilling parameters on drilling efficiency is weight on bit.

The weight of well drilling head should be determined according to the formation’s hardness and softness. Meanwhile, the quality of bit, well bore, drilling tool, displacement, and performance of flushing fluid, equipment and power should also be considered.

Proper use of Tricone bit: select Tricone bit type to suit lithology requirements as much as possible, match bit size with drilling design, and use in order of size

In the process of using the bit, if the phenomenon of rampage occurs, the reasons should be analyzed immediately to check whether the formation changes or the borehole wall collapses.

The parameters should be analyzed and adjusted immediately. If the up-lift bit can’t be drilled normally, the up-lift bit should be checked.

Analyze and judge the working condition of the drill bit in the hole.

In addition, measures should be taken to control well deviation, reduce the clearance between drilling tools and drilling holes, and play the role of full hole drilling and rigid anti-deviation.

In order to prevent deviation, centralizer and drill collar can be added on the top of the tricone bit.

As the water drill bit suppliers, GREAT can recommend the right water well drilling bits types according to your drilling demand. Meanwhile, we have water well drill bits for sale,if you want to know the borewell bits price, please contact us.

As the drill bit manufacturers in china factory, Our brand is GREAT, 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. We have 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.。

Tunnel Drill Bit

Tunneling

GREAT can customized bigger diameter Hole openers for tunneling , such as subway , gas pipeline construction.

Characteristics of tunnel engineering:

The whole project is buried underground, so engineering geology and hydrogeology conditions play an important and even decisive role in the success or failure of the tunnel construction.

Should not only be detailed geological survey and exploration in exploration stage, as accurately as possible to grasp the tunnel project within the scope of the rock properties, the strength of rock mass, complete degree, ground stress field, the stable ability, the condition of groundwater state, the harmful gas and geothermal data, and according to these raw materials, preliminary selected appropriate construction methods, determine the corresponding construction measures and form a complete set of construction machinery.

Moreover, due to the complexity of geological conditions and the limitations of exploration methods, it is still inevitable that unexpected conditions occur during construction.

Therefore, in the construction of the long tunnel, it is necessary to take some technical measures such as test guide pit (such as qinghan tunnel in Japan), horizontal advance drilling, acoustic detection and lead guide pit, so as to further investigate the geological conditions in front of the excavation and timely grasp the changes.

In order to modify the construction method and technical measures as soon as possible.

The highway tunnel is a building with a flat shape. Under normal circumstances, there are only two working faces, namely, the inlet and the outlet, compared with the bridge and line engineering.

The construction speed of the tunnel is slow and the construction period is long.

Therefore, it is necessary to excavate additional auxiliary works such as vertical shaft, inclined shaft and horizontal hole to increase working face and speed up tunnel construction.

In addition, the tunnel section is small, the worksite is long and narrow, some construction procedures can only work in sequence, and some procedures can be along with the tunnel longitudinal development, parallel operation.

Therefore, the construction requirements to strengthen management, reasonable organization, avoid mutual interference.

The equipment inside the hole and the pipeline layout should be carefully considered and properly arranged.

Tunnel construction machinery shall be compact and durable.

The underground construction environment is poor, and may even worsen it during the construction, such as the harmful gas generated by blasting.

Effective measures must be taken to improve, such as artificial ventilation, lighting, dustproof, muffling sound, sound insulation, drainage, so that the construction site in accordance with health conditions, and have enough illumination, in order to ensure the health of construction personnel, improve labor productivity.

Most highway tunnels pass through mountains, so construction sites are generally located in remote mountains and narrow valleys, often far away from existing traffic lines, inconvenient transportation, and difficult supply. These are also one of the issues that should be considered when planning tunnel projects.

Highway tunnel is buried in the ground, once built, it is difficult to change, so in addition to careful planning and design in advance, the construction should be done without any future problems.

Of course, the tunnel project also has many advantages. For example, the construction can not be affected by the change of day and night, the change of seasons, the change of climate and other natural conditions.

Choosing GREAT madeHole opener and the best drill bit for granite rock for your high quality and safety works.

As the drill bit manufacturers in china, Our brand is GREAT, 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. We have 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, drill bits for rock and concrete, Tricone bit, Roller bit, Diamond Core bit, Bi-center bit, PDC reamer, Hole opener, etc.。

Oil Drill Bit

The Purpose of drilling: drilling is an important link and means of exploration and development of petroleum and natural gas resources.

In petroleum geological work, the main purpose of drilling is to obtain the underground material data, that is, to obtain the core, ore core, cuttings, liquid, gas and other physical samples from drilling;

As a geophysical logging channel, it can obtain various geophysical data of underground rock and mineral layers.

As an artificial channel, it can observe the underground geological conditions and the underground fluid dynamics.

Using wellbore to exploit underground oil, natural gas, groundwater, geothermal resources.

The technique used in drilling boreholes for oil and gas exploration and development.

It mainly includes well design, selection of drill bit and mud, combination of drilling tools, coordination of drilling parameters, deviation control, mud treatment, coring, accident prevention, and treatment, etc.

The characteristics of diamond drill bit oil well technology are a deep hole, high pressure, high temperature, and many influencing factors.

According to the geological and geographical conditions and engineering needs of oil and gas exploration and development, there are two types of vertical Wells and directional Wells. The latter can be divided into general directional Wells, horizontal Wells, and cluster Wells.

The petroleum drill bits types include PDC bit and Tricone bit.

The PDC drill bits for oil and gas industry is also used in the most common petroleum drilling, which has high efficiency and stable effect.

GREAT has advanced optimized parameter drilling software, using electronic computer as the means, using optimization method, will affect the drilling speed of various controllable factors (such as drill bit type, bit pressure, rotation speed, mud performance, hydraulic factors), according to the minimum cost principle to establish a mathematical model, program.

Carry out optimization and coordination, so that drilling work to achieve high quality, fast, low cost.

Core extraction technology according to the design requirements from the hole drilling rock samples (core) required layer, for exploration and development of oil and gas reservoirs to obtain the first data.

Commonly used coring tools are mainly composed of Diamond core it, core barrel, core grab and joint, etc. During coring drilling, the drill bit continuously cuts the rock at the bottom of the well in a circular manner to make the drilled columnar core continuously enter the core barrel.

As the oil and gas drill bit manufacturers, we provide the affordable oil well drill bit price. To meet special needs, there are also closed coring, pressure keeping coring and coring tools (rubber bushing coring tools) for extremely loose and broken formations.

As the great drill bits factory in china, Our brand is GREAT, 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. We have 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, drill bits for rock and concrete, Tricone bit, Roller bit, Diamond Core bit, Bi-center bit, PDC reamer, Hole opener, etc.。

Drill Bit for Gas

The world’s major natural gas extraction countries are the United States, Russia, Turkmenistan, Iran, Qatar, Algeria, the Netherlands and so on. China has also started producing shale gas in recent years. One of the main use of the most do is the PDC gas drill bits.

Popular drill bit types oil and gas 6 1/8″ GS1306T, 8 1/2″ GSD1606T, 12 1/4″ GS1606TM, 17 1/2″ GS1905S.

Natural gas, like oil, is buried in closed geological formations, some in the same layer as oil, some in isolation.

Natural gas stored in the same zone as crude oil will be extracted along with it.

Due to the complicated geological conditions of natural gas deep well drilling, the unforeseeable engineering geological problems lead to the difference between actual drilling and design and lead to serious drilling complications and accidents, which not only endanger drilling safety and the realization of geological objectives, but also seriously restrict the improvement of drilling speed and significantly increase drilling costs.

Drill Bit for Gas

Natural Gas

Popular size and type 6 1/8″ GS1306T, 8 1/2″ GSD1606T, 12 1/4″ GS1606TM, 17 1/2″ GS1905S.

Natural gas, like oil, is buried in closed geological formations, some in the same layer as oil, some in isolation.

Natural gas stored in the same zone as crude oil will be extracted along with it.

natural gas 1

natural gas 2

Gas main engineering geology problems of deep well drilling (abnormal formation pressure, sidewall instability, formation natural deflecting and reservoir damage, etc.) and its characteristics, prevention, and treatment mainly drilling engineering geological problems.

In the design and construction of drilling well-drilling engineering geological problem analysis and follow-up evaluation, especially to deal with the four pressure (formation pressure and collapse pressure, leakage pressure and drilling fluid column pressure), is to improve the design quality, achieve the fundamental guarantee of safe drilling smoothly.

As the drill bit factory in china, Our brand is GREAT, 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. We have 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, drill bits for rock and concrete, Tricone bit, Roller bit, Diamond Core bit, Bi-center bit, PDC reamer, Hole opener, etc.。

Mining Drill Bits

The production system of Mining Industry is a complex system composed of many links.

In coal mine drilling, complicated geological and hydrologic conditions, thick alluvium of topsoil, many quicksand layers, large water inflow, large well diameter, deep wellbore, and often concentrated operation scale, as well as high temperature, high pressure and high formation stress in the deep well, will greatly aggravate the severity of underground complexity and the difficulty of treatment.

Some problems should be solved according to the characteristics of coal mine drilling:

The problem of increasing drilling speed.

Prevention and treatment of well collapse, diameter reduction, drilling drop and other accidents.

Anti-deviation technology.

High temperature resistance。

Problems of cutting tools in deep well construction.

Therefore, it is necessary to perfect the structure of the large-diameter bit.With the increase of drilling fluid density and well depth, the fluid column pressure exerts a pressure holding effect on the broken cuttings at the bottom of the well, and the broken cuttings from the cone bit are not easy to leave the bottom of the well under the action of differential pressure, resulting in the formation of a cushion at the bottom of the well, reducing the crushing efficiency, etc. Reasonable bit structure will speed up the flow of cuttings in the bottom hole, improve the crushing efficiency, accelerate the drilling speed and shorten the drilling cycle.

As well as improving the life of the coal mining drill bits, the service life of the roller has a great impact on the construction cost of drilling well. The life of the roller bit mainly depends on the life of seal, bearing and parent.

GREAT Mining tricone bit is utilized for blasting hole open pit mining. Depending on the different formations of customers, we can offer different product , the sizes ranged from 6 3/4″ to 16″.

As the mining drill bit manufacturers, mining tricone bit, we recommend types of drill bits used in mining: 532、632、642、722 etc..if you want to know the mining drill bits price, please contact us.

As the drill bit factory in china, Our brand is GREAT, 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. We have 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, great drill bits, Tricone bit, Roller bit, Diamond Core bit, Bi-center bit, PDC reamer, Hole opener, etc.。