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How to Use Tricone Bit Appropriately?

How to Use Tricone Bit Appropriately?

1. Choose the drill bit types appropriately

(1) According to the lithology of the drilled formation, the following principles should be followed when selecting the type of drill bit:

 a. In the shallow well section where the rock is cemented and loose, the drilling speed of the drill bit and the prevention of mud packs should be considered;

 b. In the deep well section where the trip is long, the footage of the drill bit should be considered;

 c. When the outer row teeth of the drill bit out of the well are severely worn, a bit with gauge teeth should be used;

 d. In the easy deviating well section, a bit with small slip and many short teeth should be used;

 e. Wedge-shaped tooth drills should be used when selecting insert drills;

 f. For diamond limestone, it is advisable to use double-cone-tooth and projectile-shaped tooth drill bits;

 g. When there is more shale in the formation or the density of drilling fluid is higher, a bit with a larger slip amount should be selected;

 h. When the stratum is limestone or sandstone, and a bit with a smaller slip amount should be selected;

 i. When drilling hard and highly abrasive stratum, it is advisable to use pure rolling button and double bevel bit.

 (2) In order to optimize the hydraulic parameters of bit, the longer nozzle and unequal diameter combined nozzle bit should be preferred.

 2. Inspection of a drill bit before drilling

(1) Check whether the model and diameter of selected bit meet the requirements;

 (2) Carefully check whether the thread, weld and teeth of the drill are in good condition;

 (3) Check whether the nozzle is installed firmly and the water hole should be unblocked; when rotating the cone of the rock bit by hand, the bearing seal should be intact; the pressure compensation system of the drill bit should be intact, and the pressure relief hole should not be blocked.

 3. Matters needing attention when a drill bit enters the well

(1) After cleaning the drill thread, apply special thread oil;

 (2) Choose a suitable loading and unloading device, and do not jerk when the drill bit is put into the loading and unloading device;

 (3) Tighten according to the specified torque;

 (4) The drilling operation should be stable, and no hard pressure should be encountered in case of resistance. Drilling of the insert bit should be slow to avoid damage to the alloy teeth in the hard formation and irregular hole;

 (5) When drilling down and encountering an obstruction, the depth of the well, the situation and time of the obstruction should be noted, so as to determine the cause of the obstruction and control the working time;

 (6) Drill down to a certain distance to the bottom of the well (a single root). The pump should be turned on and the turntable should be slowly lowered. It is strictly forbidden to go down to the bottom to open the pump.

 4. Precautions for drilling of a drill bit

(1) The new drill bit should be run-in lightly for about half an hour, and then gradually increase to the specified WOB, and it is strictly forbidden to pressurize to start the turntable;

 (2) Concentrate and deliver the drill evenly when operating the brake lever to prevent accidents of slipping and sudden drills;

 (3) During roller bit drilling, the changes in lithology and the working conditions of the bit should be analyzed at any time according to the change of the drill pair and the operation of the bit, and the drilling parameters should be adjusted in time.

 5. Determine the starting time of a drill bit

(1) Determine according to the wear of the bearing and teeth, the phenomenon of bearing damage:

 The turntable has periodic jumps. If the bit pressure is small, the jump is light. If the bit pressure is big, the jump is heavy; the drilling speed drops; the pump pressure is normal but the pointer of the weight indicator swings.

 (2) The phenomenon of cone jamming:

 The load on the turntable increases; the turntable chain jumps; the kelly rod is crappy; the turntable is stopped and the car is reversed; the drilling speed drops; the weight indicator pointer swings severely.

 (3) The phenomenon of tooth grinding (stripping):

 The load of the turntable is reduced; the kelly does not jump; the drilling speed is significantly reduced or there is no footage; the weight indicator indicates smooth and no swing; the pump pressure is normal.

 https://www.greatdrillbit.com/how-to-use-tricone-bit-appropriately.html

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Working Principle and Characteristics of PDC Bit

what is a pdc bit? PDC bit is the abbreviation of Polycrystalline diamond compact bit, also known as polycrystalline diamond cutting block bit or composite chip bit. Because of its advantages of fast drilling speed, long service life and high footage, PDC bits are widely used in oil drilling.

 Structure Characteristics of Drilling PDC Bits

PDC bit is composed of the a bit body, PDC cutting teeth and a nozzle. According to different structures and drill bit manufacturing processes, the drilling PDC bits are divided into two series: steel body and matrix body.

 The whole bit body of rigid drilling PDC bit is made of medium carbon steel and formed by the machine manufacturing process. Drill holes on the working face of the bit, and fix PDC cutting teeth on the bit crown by pressing in and tight-fitting. The crown of a drill bit is treated by a surface hardening process (spraying tungsten carbide wear-resistant layer, carburizing, etc.) to enhance its erosion resistance. The main advantage of this kind of drilling PDC bit is a simple pdc bit manufacturing process, but the disadvantage is that the bit body is not erosion resistant and the cutting teeth are difficult to be fixed, so it is seldom used at present.

 The upper part of the drilling PDC bit is made of steel and the lower part is made of WC wear-resistant alloy. The PDC bit is made by powder metallurgy sintering process. The PDC cutting teeth are welded on the preformed groove of the carcass with low-temperature solder. Tungsten carbide matrix has high hardness and erosion resistance, so the matrix PDC bit has long service life and high footage, which is widely used at present.

 Working Principle of PDC Drilling Bits

Drilling PDC drilling  bit breaks rocks by cutting. The self-sharpening cutting teeth can easily cut into the formation under the action of WOB and move the shear rock forward under the action of torque. When multiple PDC cutting teeth work at the same time, and there are many free faces of the bottom rock, the rock is easy to be broken under the shear action. That's way PDC drilling bit has higher rock-breaking efficiency ans faster drilling speed.

 Correct Use of PDC Rock Bits

Diamond PDC bit has the best effect in large homogeneous soft to medium-hard formation. It is not suitable for drilling gravel layer and soft hard cross formation.

 Before the PDC rock bit is put into the well, the bottom of the well shall be clean to ensure that there is no metal falls.

 When the PDC rock bit is just put into the well, it should adopt small bit pressure and low rotation speed to run, andresume normal drilling until the bottom of the well is formed.

 PDC drilling bit is an integral bit without any moving parts, suitable for high-speed turbo drilling.

 Drilling PDC bits produced by Great Drill Bit, a leading pdc cutter manufacturer, are featuring good drilling effects like low WOB, high rotation speed and large displacement.

 https://www.greatdrillbit.com/working-principle-and-characteristics-of-pdc-bit.html

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What Are the Advantages of an Oil Well Bit?

What Are the Advantages of an Oil Well Bit?

The Composition of Oil Well Drill Bits

The oil well drill bit is a widely used drilling bits adapting to a wide range of formations and featuering high drilling speed. The oil well drill bit is composed of more than 20 parts such as cutting structure, bearing structure, locking element, oil storage seal installation and nozzle installation. The current motor is repeatedly used in the wellbore, forming a front part of that has greater rigidity, smaller relative discharge area, and higher relative return velocity. The upper annulus is taken to form a vortex that affects the cuttings at the front. The formation of accumulation affects the drilling speed, and further formation of the repeated fragmentation of those cuttings by the PDC drill bit, which is easy to form a mud pack of the bit remover.

 What Are the Advantages of Oil Well Drill Bits?

(1) The steel ball is used in the wellbit to lock the roller, suitable for relatively high speed.

 (2) The O-ring seal adopts a wear-resistant, highly saturated nitrile rubber, which increases the cross-section of the seal ring. And the outer end of the seal area adds a small sealing boss to improve the sealing performance.

 (3) The oil well drill bit uses high-strength and high-toughness alloy teeth, which improves the ability of resisting impact and reducing the probability of tooth breakage. Soft formations are inlaid with spoon-shaped teeth.

 (4) The bearing of the palm of the oil well bit is covered with a layer of hard alloy, and there is also a silver-plated layer on the roller shaft to improve the anti-bite and load-bearing capacity.

 (5) The oilfield bits use a grease that can withstand a temperature of 250°C, and low wear improves the ability of the drill bit.

 (6) The optimized number of teeth of the oil well bit and the equipment such as exposed teeth and alloy teeth can uplift the bit cutting speed at a larger height.

https://www.greatdrillbit.com/what-are-the-advantages-of-an-oil-well-bit.html

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The Cause of PDC Bit Balling

The Cause of PDC Bit Balling

The Common Phenomenon of PDC Drill Bit Balling　　

Sometimes when you use a PDC drill bit for a long period of time, you will find it there is something wrong about it, like the follwing;

 The footage is obviously slower or higher when drilling;

Increasing or reducing WOB has no obvious effect on drilling speed;

It has little effect on the drilling rate when the formation changes;

Drilling tool puncture and the circulation short circuit occur during the drilling,  and the drilling speed obviously slows down after treatment.

The teeth of the drill bit cannot effectively penetrate into the formation, showing that the torque is reduced or the torque fluctuation range is reduced;

The phenomenon of "piston pulling" occurs during tripping and drilling.

 Causes of PDC Bit Balling

Above phenomenon occurs because that your PDC bit is balling ,and here Great Bit, a professional drill bit manufacturer, listed four main reasons may cause balling of PDC bit:

 Geological Factors:

The drilled stratum is soft mud with non-diagenetic upper part, which is very easy to stick to the surface of the drill bit, which will cause balling of the drill bit after compaction.

Although the shale in the stratum is diagenetic, it is easy to hydrate and disperse, making the mud or solid phase in the wellbore greatly increases, which is adsorbed on the surface of the drill bit and causes the bit balling.

Or the formation contains dispersed gypsum, which causes mud pollution, and the harmful solid phase in the mud is difficult to remove, which greatly increases the probability of formation of bit balling.

Under the action of the pressure difference, the harmful solid phase in the wellbore and the cuttings that are not carried out in time are absorbed to form a thick mud cake, which accumulates under the diamond PDC bit when starting the drill, causing the bit balling.

 Mud Performance Factors:

Poor mud inhibition, unable to control the hydration and dispersion of shale;

Too high solid content and sticky cut, the drilled cuttings are difficult to remove and are easily adsorbed on the surface of the drill bit.

If a solid-free phase drilling fluid is used, the drill bits will never have mud packs;

The proportion of mud is too high, the water loss is large, and thick mud cakes are easily formed;

The lubrication performance is poor, the surface of the drill bit cannot form an effective protective film, and the inferior solids in the drilling fluid are easily adsorbed on the drill bit.

 Engineering Technical Factors:

The drilling displacement is small, the bottom hole and the drill bit cannot be cleaned effectively, and the upward and backward speed is insufficient.

The cuttings stay in the well for a long time and adhere to the well wall to form a thick mud cake, especially in the upper part of the drill.

It is more serious when the speed is high; in the soft mudstone formation, the drilling pressure is too high, the formation or the drill cuttings and the surface of the drill bit form direct contact, causing the bit balling;

The long open hole drilling does not carry out halfway circulation, and the mud cake scraped from the well wall or drill cuttings will cause the drill bit balling.

 Drill Bit Selection Factors:

The water eye design cannot meet the chip removal requirements;

 The channel chip removal angle prevents the drilling cuttings from smoothly leaving the bottom of the well.

  https://www.greatdrillbit.com/the-cause-of-pdc-bit-balling.html

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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.

https://www.greatdrillbit.com/the-application-field-and-the-drilling-technology-of-the-roller-cone-bit.html

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Shipping Info

Shipping Info

Our PDC bit 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.

 https://www.greatdrillbit.com/services/shipping-info.html

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Reverse circulation PDC bit for geological exploration samples

Overview RC PDC Bit

 RC PDC bit 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 PDC BITS 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 provides a more cost-effective drilling method.

  The Details of RC PDC Bit

 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 RC PDC Bit

 The raw material of GREAT's RC 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 bit according to customer requirements and formation conditions, and we have professional staff and precise equipment to get the best products 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.

http://www.greatdrillbit.com/product/rc-pdc-bit.html

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Fixed cutter PDC Hole Opener reamer with hard facing for HDD drilling

Overview of PDC Hole Opener

 PDC Hole opener 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 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 Details of PDC Hole Opener

  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, 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.

  http://www.greatdrillbit.com/product/pdc-hole-opener/

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PDC cutters used for PDC bit, PDC hole opener, PDC reamer

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 cutters 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 Details of PDC Cutter

  the details of PDC cutter

 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 PDC cutters 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.

  http://www.greatdrillbit.com/product/pdc-cutter.html

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Hard Rock PDC cone bit Used for drill underground core

Overview of PDC Core Bit

  GREAT customized made Diamond core bits, which including Matrix body and Steel body, the Diamond core bit is used to drill an underground core (or mineral core) primarily when samples of underground rock (minerals) are required.

  Every PDC Core 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 asking GREAT salesman 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 Core bit has design a shallow parabolic profile and medium cutter density, designed 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 blade,  7 blade,  8 blade, enhance the bit's ability to drill in hard formations. Special TSP gauge or PDC Arc-cutters to protection the diameter.

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

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

Rock type: Mudstone, limestone, anhydrite.

 http://www.greatdrillbit.com/product/pdc-core-bit.html

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PDC Bit

PDC bit is Polycrystalline Diamond Compact bit ,it also named Diamond bit.

 According to the Material Classification：

  Matrix body PDC bit: It was made by tungsten carbide powder,and gauge protection is TSP.

 Steel body PDC bit: AISI 4145H heat treatment steel (America standard steel ), High quality CNC machines milling pockets, blade, nozzles.

  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

According to the Applicable Industry Classification:

  Mining Industry

 There are some 3blade PDC bit mainly used for mining industry in Australia ,and Russia .The formation is very soft . Choosing Steel body PDC bit can saving more drilling cost.

 Water well drilling

 Various used for geothermal well drilling ,PDC bit have higher ROP.

 Oil & Gas drilling  

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

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

 As one of most professional pdc bit manufacturers, Great bits design and manufacture a wide variety of Matrix body PDC bit and Steel body PDC bit. Our PDC bits are offered in a variety of sizes, blade count and cutter sizes.

 Most of our raw material made in USA, France. Our supplier technical engineers come to our factory training our welder and have meeting to show their new products regular .We communicate with our supplier very well and very happy .So if our customers need ,we can ask our engineer have a meeting with each other face to face.

 If your drilling have any problem, GREAT can provide solution and service.

   http://www.greatdrillbit.com/product/pdc-bit/

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Matrix Body PDC Bit

Great bits design and manufacture a wide variety of Matrix body PDC (polycrystalline diamond cutter) bits. Our PDC bits are offered in a variety of sizes, blade count and cutter sizes.

 The Matrix body PDC bit is sintered with tungsten carbide powder. Gauge protection with natural diamond.Tungsten carbide matrix can resist erosion, wear resistance, high strength and good effect of diameter control.

  The Junk Slot Area of the bit water hole can be designed according to the hydraulic parameters required by the drilling process. The shape of the Matrix body PDC bit can be designed according to the formation characteristics to achieve the best use effect.

 Matrix Body PDC Bit GM1605T

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

Matrix Body PDC Bit GM1607T

This is a 7 blade Matrix body PDC bit , with Stinger cutters back row, used for very abrasive formation.

PDC bits are designed for high speed drilling in shale, limestone, and sandstone formations. Unlike roller cone bits , these PDC bits are a one piece matrix bodies with no moving parts. The fixed-cutters shave away the rock, making it possible to operate with higher rotation speeds more efficiently in consolidated formations.

 Main Advantages of Matrix Body PDC Bit:

 Working on the cutting (shearing) principle, the energy consumption of rock breaking is low.

 PDC composite sheet has super hardness, wear resistance and self sharpness.

 PDC bit is a fixed tooth bit, no moving parts, high reliability

 GREAT Matrix Body PDC Bit Advantages:

 Force balanced, resist impact to the blade during high-speed drilling, to make bit work stable.

 Plus wear knot section, reduce collision in the high-speed rotational vibration.

 Patented matrix formulation, extended bit life.

 Optimal hydraulic design, easy to move out the drill cuttings and cooling.

 Equipped with back reaming Cutters.

 The cutter is high performance to increase the ability of anti-impact and anti-abrasive

 We are here to provide you with a unique and custom solution for your specific drilling needs; from design and manufacturing to service in the field. We have what you need.

 http://www.greatdrillbit.com/product/matrix-body-pdc-bit/

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Longer Working Life Hybrid Drill Bits Improve Drilling Effeciency

Overview of Hybrid Drill Bit

 Hybrid drills bits are compounded by the PDC fixed cutting and the roller free cutting structure. The teeth on the cone crush the rock by impact crushing, forming broken pits at the bottom of the well, and making the bottom of the well uneven. It can weaken the strength of the bottom rock. The auxiliary function of the cone facilitates the PDC tooth to enter the formation, which is more beneficial to the PDC tooth scraping and cutting rock.

 Developed a personalized composite drill bit series for complex hard-to-drill formations, which has strong formation adaptability in difficult-drilling formations such as hard formation abrasive formations, tight mud shale, and heterogeneous formations such as conglomerate formations. High rock breaking efficiency and fast drilling speed.

 Hybrid drills bits produced by GREAT combine PDC and cone drill technology for smoother drilling, better torque management, and precise maneuverability.

 The great brand of hybrid drills is a superior directional drill for motor and rotary applications, offering higher cumulative speed capability, damped torque response and precise steering capability on a variety of bottom hole assemblies.

 The Details of Hybrid Drill Bit

 the details of hybrid drill bit

 The Advantage of Hybrid Drill Bit

 PDC is matched with cone optimization, and the drill bit has strong adaptability and high rock-breaking efficiency in hard-drilling strata.

 The hybrid bit utilizes the cutting advantages of PDCs soft formations and the rock breaking strength and stability of roller cones in hard or intercalated formations, with the potential to maintain a higher total rate of penetration (ROP) than an older cone or PDC single bit over a larger range of footage.

 The balance analysis and optimization of the composite cutting structure balance the working stability of the drill bit with the adaptability of the formation and improves the service life.

 Computational fluid dynamics (CFD) optimization analysis of bit watercourse and nozzle to improve flow field distribution and cleaning cooling effect.

 http://www.greatdrillbit.com/product/hybrid-drill-bit.html

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Three Blade Wings Drag Rock Drill Bit For soft formations

Overview of Drag Bit

  Drag bit are manufactured from forged high-quality alloy steel and hard alloy, plus state of art welding technology and multiple precision heat treatment to provide the highest penetration rate and longest lifespan at the roughest condition.

 A drag bit is usually designed for soft formations such as sand, clay or some soft rock. However, they will not work well in coarse gravel or hard rock formations. Uses include drilling water wells, mining, geothermal, environmental and exploration drilling. Whenever possible, they should be used to drill pilot holes because they produce cuttings that are easiest to log.

 Three-wing bits tend to drill faster, whereas four-wing bits are longer-lasting, more durable, and drill a straighter hole.

 The Details of Drag Bit

 the details of drag bit

   The Advantage of Drag Bit

 The blade system allows you to replace worn or damaged individual blades rather than the entire bit. The cost of purchasing multiple blade types and sizes is much lower than the unit. Prepare a variety of blades to ensure your time on site is most effective. The drag bit is suitable for the formation with low hardness and high plasticity.

 From 3 7/8" three-step bits to 6 1/4" four-step bits to the various sized chevron bits, this replaceable blade system offers high-quality carbide-tipped wings that weld onto your pipe or threads are cost-effective and versatile.

  GREAT also produces and sells various drill bits for oil fields, mines, geological surveys, hydrology exploration, engineering piling, geothermal development, Wells and other applications. At the same time, we will provide specific solutions according to customer requirements and actual drilling conditions

 http://www.greatdrillbit.com/product/drag-bit.html

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PDC Bit

PDC bit is Polycrystalline Diamond Compact bit ,it also named Diamond bit. It is widely used，such as diamond drill bit for China.

According to the Material Classification：

Matrix body PDC bit: It was made by tungsten carbide powder,and gauge protection is TSP.

Steel body PDC bit: AISI 4145H heat treatment steel (America standard steel ), High quality CNC machines milling pockets, blade, nozzles.

According to the Applicable Industry Classification:

Mining Industry

There are some 3blade PDC bit mainly used for mining industry in Australia ,and Russia .The formation is very soft . Choosing Steel body PDC bit can saving more drilling cost.

Water well drilling

Various used for geothermal well drilling ,PDC bit have higher ROP.

Oil & Gas drilling  

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

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

Great diamond drill bit manufacturers a wide variety of Matrix body PDC bit and Steel body PDC bit. Our PDC bits are offered in a variety of sizes, blade count and cutter sizes.

Most of our raw material made in USA, France. Our supplier technical engineers come to our factory training our welder and have meeting to show their new products regular .We communicate with our supplier very well and very happy .So if our customers need ,we can ask our engineer have a meeting with each other face to face.

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

http://www.greatdrillbit.com/product/pdc-bit/

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Matrix Body PDC Bit

Great bits design and manufacture a wide variety of Matrix body PDC (polycrystalline diamond cutter) bits. Our PDC bits are offered in a variety of sizes, blade count and cutter sizes.

The Matrix body PDC bit is sintered with tungsten carbide powder. Gauge protection with natural diamond.Tungsten carbide matrix can resist erosion, wear resistance, high strength and good effect of diameter control.

The Junk Slot Area of the bit water hole can be designed according to the hydraulic parameters required by the drilling process. The shape of the Matrix body bit can be designed according to the formation characteristics to achieve the best use effect.

Matrix body bit is designed for high speed drilling in shale, limestone, and sandstone formations. Unlike roller cone bits , these PDC bits are a one piece matrix bodies with no moving parts. The fixed-cutters shave away the best drill bit for rock, making it possible to operate with higher rotation speeds more efficiently in consolidated formations.

Main Advantages of Matrix Body PDC Bit:

Working on the cutting (shearing) principle, the energy consumption of rock breaking is low.

PDC composite sheet has super hardness, wear resistance and self sharpness.

PDC bit is a fixed tooth bit, no moving parts, high reliability

GREAT Matrix Body PDC Bit Advantages:

Force balanced, resist impact to the blade during high-speed drilling, to make bit work stable.

Plus wear knot section, reduce collision in the high-speed rotational vibration.

Patented matrix formulation, extended bit life.

Optimal hydraulic design, easy to move out the drill cuttings and cooling.

Equipped with back reaming Cutters.

The cutter is high performance to increase the ability of anti-impact and anti-abrasive

We are here to provide you with a unique and custom solution for your specific drilling needs; from design and manufacturing to service in the field. We have what you need.

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

http://www.greatdrillbit.com/product/matrix-body-pdc-bit/

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Hybrid Drill Bit

Longer Working Life Hybrid Drill Bits Improve Drilling Effeciency

Overview of Hybrid Drill Bit

Hybrid drills bits are compounded by the PDC fixed cutting and the roller free cutting structure. The teeth on the cone crush the rock by impact crushing, forming broken pits at the bottom of the well, and making the bottom of the well uneven. It can weaken the strength of the bottom rock. The auxiliary function of the cone facilitates the PDC tooth to enter the formation, which is more beneficial to the PDC tooth scraping and cutting rock.

Developed a personalized composite drill bit series for complex hard-to-drill formations, which has strong formation adaptability in difficult-drilling formations such as hard formation abrasive formations, tight mud shale, and heterogeneous formations such as conglomerate formations. High rock breaking efficiency and fast drilling speed.

Hybrid drills bits produced by Great Drill Bits combine PDC and cone drill technology for smoother drilling, better torque management, and precise maneuverability.

The great brand of hybrid drills is a superior directional drill bit for motor and rotary applications, offering higher cumulative speed capability, damped torque response and precise steering capability on a variety of bottom hole assemblies.And they have directional drill bits for sale.

The Details of Hybrid Drill Bit

The Advantage of Hybrid Drill Bit

PDC is matched with cone optimization, and the a drill bit has strong adaptability and high rock-breaking efficiency in hard-drilling strata.

The hybrid bit utilizes the cutting advantages of PDCs soft formations and the rock breaking strength and stability of roller cones in hard or intercalated formations, with the potential to maintain a higher total rate of penetration (ROP) than an older cone or PDC single bit over a larger range of footage.

The balance analysis and optimization of the composite cutting structure balance the working stability of the drill bit with the adaptability of the formation and improves the service life.

Computational fluid dynamics (CFD) optimization analysis of bit watercourse and nozzle to improve flow field distribution and cleaning cooling effect.

http://www.greatdrillbit.com/product/hybrid-drill-bit.html