What is a DTH drilling rig on Earth? What is it used for? And how to choose a suitable down-the-hole drilling rig? I think these questions may be bothering you. In fact, even if you don’t see it in real life, you more or less know what it is and what its application is from the Internet.
As the name suggests, the down-the-hole drilling rig is the equipment to drill holes in the ground. They can widely apply in various mountain construction projects. Let me give you a popular science about the specific categories of down-the-hole drilling rigs, the main application scope, and its specific advantages. You can choose the most suitable DTH Drilling Machine for you according to the specific purpose and conditions of use. Phone/Whatsapp/Wechat: +86 18337123872
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The Principles Of Choosing Down The Hole Drilling Rig
Applicability for Production
The purchase of down-the-hole drilling rigs should consider the needs of engineering construction. Furthermore, it should configure reasonably according to the engineering construction objectives undertaken by the company under normal conditions. Considering the application field of down-the-hole drilling rigs, it is necessary to consider the current engineering construction needs and the future. For the needs of down-the-hole drilling rigs under other production standards, a down-the-hole drilling rig with strong practicality in production can better highlight its actual effect.
Exquisite Workmanship
While considering the production needs, its performance parameters need to reach a certain technical level. It is beneficial to improve the service life of its technology, and the small drilling rig will be eliminated in a short time. In the long run, it can meet the sustainable development needs of customers, and more reasonable and effective protection.
Operability and Maintainability
The operation is simple, which is convenient for employees to use the operation flexibly. More importantly, it reduces the time for auxiliary work, such as leveling the ground, moving the down-the-hole drilling rig, adjusting the drill stand, changing the drill bit, adjusting the valve, etc.
Energy-saving and Environmental Protection
At this stage, the international community attaches great importance to equipment, energy saving, and environmental protection. When purchasing new equipment, it is necessary to pay attention to whether the processing materials and various protective devices are complete, and whether the noise during construction work, industrial waste gas, and waste discharge meet the relevant national policies Regulations need to wait.
Moderate Economy
The purchase price of the equipment needs to be reasonable, the energy consumption and maintenance costs are low during the whole operation process. Then, the investment recovery period is short, so as to facilitate the circulation of customers’ financial resources.
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Classification Of DTH Drilling Rigs
According to the factors that affect the selection of drilling rigs, everyone also has a certain understanding of the selection of down-the-hole drilling rigs. However, it is necessary for us to understand the types of down-the-hole drilling rigs before choosing. There are various types of down-the-hole drilling rigs, which can be divided into the following categories according to different classification standards. Contact us to learn more detail about down-the-hole drilling rigs.
According To The Way Of Walking
Small outrigger type down-the-hole drilling rig: It is also called a portable down-the-hole drilling rig. Portable Down-the-hole drilling rigs include gas-electric down-the-hole drilling rigs (air compressor + electricity), also called electric down-the-hole drilling rigs. It is a kind of compound power model powered by a motor and compressed air. And fully pneumatic down-the-hole drilling rigs (only air compressors are required). It is a method that uses compressed air as the power to convert compressed air into mechanical force to break rocks.
Large crawler mounted down-the-hole drilling rig: It is also called an open-pit crawler type down-the-hole drilling rig. Open-pit crawler-type down-the-hole drilling rig is a classic model drilling machine. This type of drilling rig has an electric system, with high-quality engines and motors. There are diesel engines for diesel and electric motors, and the power system can operate independently and can be switched at will. It has the characteristics of high stability and low production cost. It has a wide application in urban foundation pit construction, open-pit mining, etc.
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According To The Working Power
Pneumatic-electric linkage down-the-hole drilling rig: Pneumatic-electric linkage down-the-hole drilling rig is high-powered with an easy operation system. The pneumatic drill could work in an open mine, water and electricity projects, and railway and highway construction projects. The quarry drilling machine can reach a higher drilling speed; the rubber hose braided with steel wire could bear high pressure.
Full pneumatic down-the-hole drilling rig: It is widely used in drilling large diameter blast holes in mining, road, national defense, water conservancy, and so on. It is a piece of necessary drill equipment for the prophase surface mine project.
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Application Of DTH Drilling Rigs
Among all the drilling methods, DTH drilling is being used more and more widely and has very high efficiency in some cases. Here, we will introduce the specific application for the DTH drilling rig as the most important part of whole basic drilling knowledge.
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What Are The Fascinating Benefits Of DTH Drilling Rig?
It is a versatile and efficient drilling method used in various applications, including mining, construction, and groundwater drilling. Some of the significant advantages of down-the-hole drilling include the following:
Efficiency Increment
Costs Reduction
Versatility and Flexibility
Safety Improvement
Environmental Friendliness
If you’re considering down-the-hole drilling for your next project, contact us for DTH Drilling Solutions!
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Conclusion
I believe that through the above-detailed explanation, you have a deeper understanding of down-the-hole drilling rigs. Therefore, it is no longer difficult to choose a DTH drilling rig that is suitable for you. YG Machinery is happy to provide you with the best service.
You need a borehole drilling machine for various purposes. For example, drilling a well to obtain natural resources (water, oil, geothermal energy, etc.) to build a foundation, drilling holes in a mine, and taking samples from the ground.
First, you need to determine the purpose of the borehole drilling machine. And what kind of terrain is the main work on? Depending on the terrain, you can choose different types of drilling rigs. For example, rotary drilling rig, impact drilling rig, down-the-hole drilling rig, top hammer drilling rig (with the high hammer), etc.
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In order to make the best choice, it is important to determine whether the borehole drilling machine is used for core business or occasional use. Especially whether you use the latest technology. Or whether a machine that has been used for decades is right for you.
The safety, reliability, and ease of use of drilling rigs are also important factors that need to be considered, and there is a direct connection between them. The use of reliable and easy-to-operate drilling rigs according to the manufacturer’s recommendations can improve user safety.
It is also very important to define the type of movement required by the rig. There are crawler-type automatic drilling rigs and truck-mounted or trailer-mounted drilling rigs, which need to be powered by generators or trucks that carry them.
Once the type of rig required is determined, the required rig size can be calculated based on the diameter and depth of the borehole.
If you need to move at a low speed on uneven areas or very soft ground, you can choose a crawler drill. The stability of the rig depends on the surface area of the track. Therefore, the wider the crawler, the more stable the drilling rig. However, crawlers that are too wide tend to wear out faster and damage the ground when moving, especially when turning. The crawler drilling rig has a travel speed of about 4km/h, so it is more suitable for operations that require little travel.
A truck-mounted or trailer-mounted borehole drilling machine is not autonomous in mobility or energy. These energy sources may come from transport trucks or independent generators. However, this type of drilling rig is much lower in cost than crawler drilling rigs.
This type of drilling rig machine uses a tool to grind the rock to drill a hole under the action of weight and rotation. Mainly used in oil production. The cuttings are brought to the surface under the pressure of the drilling fluid injected into the drill string. The drilling fluid also helps to consolidate the borehole wall, so there is no need to treat the borehole wall during operation.
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DTH Drilling (Rotary Percussion Drilling Or Rotary Hammer Drilling)
This drilling method uses a drill and a rotary cutter (drill bit) is used for drilling. And punch the bottom of the hole with a pneumatic hammer. The excavated material rises to the ground under the pressure of compressed air with a hammer. This type of drilling rig is powerful and has a high drilling speed, especially in rocks. For artesian wells (wells in which water naturally rises to the surface under groundwater pressure) or geothermal drilling, air injection at the end of the drill pipe pushes the water up the hole. This allows the operator to immediately determine the water flow encountered.
hard and cracked ground up to 4000 meters deep. When the drill bit is eccentric, a casing propulsion system (where the pipe is installed by gravity) can be used to drill the hole. The system will strengthen the hole as the drilling progresses.
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Top Hammer Drilling
The drilling rig machine used for this type of drilling can also be run on the percussion system. But the rig is still located outside the borehole. They are mainly used for small-diameter drilling. For example, it is used for mineral exploration or to install tie rods in rocks. This drilling system is used for shallow drilling. Because the ground structure drilled through may produce significant deviations. This drilling rig can work in any direction.
Spiral Drilling
This is a type of rotary drilling that uses a worm (auger). This type of drilling is mainly used for loose clay or sand. The worm will bring the excavated material directly to the ground. For deep hole drills, the auger needs to be lifted regularly to empty its digging material.
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Core Drilling Rig Machine
Core drilling is similar to rotary drilling. But it uses the top to extract a sample inside the tool, called a core.
Percussion Drilling Rig Machine
Percussion drilling refers to the use of tools and drills to break rocks under the action of gravity. This type of drilling can only be used vertically. In order to prevent the borehole from collapsing, it needs to be protected when drilling. Once the drill cuttings interfere with the drilling, replace the drill bit with a flap valve guide tube and reassemble the drill cuttings. The flap valve guide tube is a tube with an inclined flap at the lower part. The inclined flap can fill the pipe with excavated material and then transport it to the ground.
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Pipe Jacking Drilling Rig Machine
Jacking pipe drilling is mainly used for the installation of horizontal pipes. The pipe is gradually pushed through the impact. At the end of the drilling operation, the excavated material is removed by water injection or using an auger (endless screw). This technique is especially used to avoid transmitting vibrations to surrounding buildings or to avoid trenching.
The percussion rig relies on the vertical reciprocating movement of the drilling tool to make the drill bit hit the bottom of the well to break the rock formation. The percussion drilling rig has a simple structure without a circulating well-washing system. Furthermore, the removal of cuttings and the drilling rig cannot be carried out at the same time, so the efficiency is low. The drilling depth is generally within 250 meters, sometimes up to 500-600 meters. There are mainly the following 2 types of drilling equipment for sale.
The punching cone uses the weight of the drilling tool itself to hit the formation. At the lower end of the drilling, the tool is several sharp-angled gripping flaps that can be opened and closed. When the drilling tool moves downward under the action of its own weight. The gripping flaps are opened and cut into the rock formation. Then the drilling tool is lifted by the hoist through the wire rope, the cuttings are grabbed into the cone by the gripping flap during the closing process, and the cuttings are lifted out of the wellhead. The drilling depth is usually 40-50 meters, and the deepest is 100-150 meters.
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Wire Rope Impact Drill Machine For Sale
It is composed of a mast, a lifting pulley, a steel wire rope, an impact mechanism, a drilling tool, and a motor mounted on the top. During operation, the motor drives the impact mechanism through the transmission device and drives the steel wire rope to make the drill reciprocate up and down. Actually, when moving downwards, the weight of the drill bit itself cuts into and breaks the rock formation. And the upward movement is pulled by a wire rope. The stroke of the drill bit is 0.5 to 1 meter, and the impact frequency is 30 to 60 times per minute. The cuttings are cleared out of the ground by the sand pump, and drilling and cuttings are removed at the same time.
The rotary drilling rig relies on the rotary motion of the drilling tool to break the rock formation to form holes. As a leading drilling equipment supplier in China, there are mainly the following 5 types of drilling equipment for sale.
Use a pot cone drill to rotate and cut the soil layer. The big pot cone and the small pot cone are called according to the size of the drilling tool, which can be driven by manpower or power. The cut soil debris falls into the pot and is lifted to the ground to be discharged. The pot cone has a simple structure and low efficiency. And is suitable for general soil or sand and gravel soil. The drilling depth of the small pot cone is 80-100 meters, and the large pot cone is 30-40 meters.
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Rotary Drilling Rig With Circulating Mud Pump
As a matter of fact, it is composed of a tower, hoist, turntable, drilling tool, mud pump, faucet, and electric motor. During operation, the power machine drives the turntable through the transmission device. The active drill rod drives the drill bit to rotate and break the rock formation. There are positive and negative circulation methods. When the positive circulation drilling rig is working. The bottom hole cuttings are carried out of the wellhead through the annular channel outside the drill pipe. After the sedimentation tank settles, the mud flows back to the mud tank for recycling. Contact us to get rotary drilling equipment for sale price.
When the reverse circulation drilling rig is working, the mudflows into the bottom of the well from the wellhead after it settles in the sedimentation tank. And the mud that carries the cuttings is sucked out of the well through the drill pipe cavity by the sand pump through the bit nozzle and sinks back into the sedimentation tank. The drilling rig forms a high-rising velocity in the drill pipe. And has a strong ability to discharge cuttings and pebbles. Circulating mud washing rotary drilling rig has a fast drilling speed and is suitable for loose formations where the diameter of the soil, is sand. And pebbles are smaller than the inner diameter of the drill pipe. The drilling depth is generally within 150 meters.
Rotary Drilling Rig With Compressed Air Flushing Well
In fact, on the rotary drilling rig, the air compressor is used to replace the mud pump, and the compressed air is used to replace the mud to wash the well. The reverse circulation method is usually used, also known as gas lift reverse circulation. Therefore， it is suitable for arid areas with large-good depths and water shortages, and permafrost in cold zones.
Hydraulic Power Head Drilling Rig
Furthermore, it is driven by a hydraulic motor through a reducer, and a powerhead that moves up and down along the tower replaces the turntable and faucet on the turntable drill to drive the drill rod and bit to rotate and cut the rock formation. Large-diameter water wells can be drilled.
Frankly, drilling into the rock formation by a combination of vibration and rotary motion. The drilling tool is composed of a drill bit, a vibrator, a vibration absorber, and a guide tube. The vibrating force generated by the vibrator makes the whole drilling tool make a cone pendulum movement to break the rock formation. The compressed air reverse circulation method is used to wash the well. So that the cuttings are discharged out of the well through the pipe and the inner cavity of the drill pipe. The drilling depth can reach 150 meters.
There are 2 types of compound drilling equipment for sale. One is a water well drilling rig that combines impact and rotation, such as a pneumatic down-the-hole hammer drill. The down-the-hole hammer drill is composed of a cylinder liner and a piston.
The high-pressure air provided by the industrial air compressor drives the piston to reciprocate up and down, impacting the drill bit to enhance the drill bit’s ability to drill into the rock formation. At the same time, the drilling tool rotates at a relatively low speed of 35-60 rpm. The air discharged from the upper and lower cavities of the piston enters the drill bit and carries the bottom cuttings out of the wellhead. The pneumatic down-the-hole hammer drill can be used for drilling deep wells in hard rock formations, with high drilling speed and straight boreholes.
The other is to add a percussion mechanism on the basis of the rotary drilling rig. Which is mainly used for rotary drilling. When encountering a pebble layer, the two-water well drilling rig that uses percussion drilling is highly adaptable to various formations. If you need to buy any type of drilling machine, please feel free to contact the YG drill equipment manufacturer.
On March 3, 2023, Romania customer Constantin received 25 horizontal directional drilling rig machines from YG Machinery. Then, the customer Constantin and his team received the HDD Rig Machine and put it to work immediately. After that, through the multi-day construction project, the customer Constantin and his team spoke highly of our horizontal directional drilling rig machine. According to Constantin, our rigs are very efficient and always get their projects up to speed with a high-quality finish. Even more to thepoint, he also said that our technicians provided them with more detailed technical support, which made them operate with ease. In short, providing the best and most comprehensive service is YG Machinery’s eternal pursuit.
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Description Of Horizontal Directional Drilling Rig
The Horizontal Directional Drilling Rig is a construction machine for laying various underground utilities (pipelines, cables, etc.) without excavating the ground surface. Evidently, it uses the latest trenchless technology. By the way, trenchless technology refers to a high-tech and practical new technology for laying, repairing, or replacing various underground pipelines with a minimal excavation of the surface. Most importantly, it has the advantages of not damaging the road surface, not affecting traffic and commercial operations, not polluting the environment, and having high comprehensive economic benefits, and has been widely used and developed rapidly.
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Technical Specification
Model
YG-160A
YG-180
YG-280
YG-320
Engine rated power
100KW
97KW
160KW
140KW/160KW
Push and pull
Cylinder
Motor
Motor
Cylinder
Maximum drag/feed force
160/100KN
180/180KN
280/280KN
320/320KN
Maximum torque of power head
5000N.n
6000N.n
10000N.n
12000N.n
Powerhead speed
0-180r/min
0-140r/min
0-120r/min
0-140r/min
Moving speed of power head
30m/min
20m/min
20m/min
20m/min
Maximum reaming hole diameter
Φ600mm
Φ600mm
Φ750mm
Φ800mm
Drill rod length (single)
3m
3m
3m
3m
Drill pipe diameter
Φ60mm
Φ60mm
Φ73mm
Φ73mm
Entry angle
10-23°
10-22°
10-23°
10-20°
Maximum mud flow
160L/min
250L/min
320L/min
320L/min
Maximum mud pressure
100bar
80bar
80bar
80bar
Overall quality
6700kg
8500kg
12500kg
11500kg
Dimensions (length*width*height)
5700*1820*2400
6400*2270*2340
7100*2260*2450
7100*2250*2450
Application Of Horizontal Directional Drilling Rig
Horizontal Directional Drilling Rigs are widely used in the laying of flexible pipelines such as water supply, electric power, telecommunications, natural gas, gas, and petroleum. Seemingly, it is suitable for sandy soil, clay, and other ground conditions. It is not suitable for high groundwater levels and pebble formations. It can be constructed in most non-hard rock areas.
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Features Of Horizontal Directional Drilling Rig
The hydraulic and electrical systems of the drilling rig adopt advanced control technology, and the operation is comfortable. Evidently, the walking adopts the wired remote control mode, and the main accessories are selected from well-known brands at home and abroad;
The characteristics of low emission and low noise of Cummins EFI diesel engine, combined with the adoption of internationally leading control technology, not only is more suitable for urban construction but also minimizes the power consumption of the drilling rig under no-load conditions;
The rotation of the power head is driven by four motors, with large torque, and has a two-speed step-less speed regulation function;
The push and pull of the power head is driven by four motors with a reducer, and the rack and pinion transmission has good stability and high efficiency;
The mud pump is in the form of a hydraulic drive and mechanical speed change, which can flexibly adjust the pressure and pump volume:
The track adopts steel track and rubber shoes, which can bear the high load and walk on various roads;
Complete supporting drilling tools, using Φ73x3000mm drill pipe, and can be customized according to user requirements;
Equipped with a wireless guide device, easy to use:
Optional manipulator, convenient and efficient loading and unloading of drill pipes, greatly reducing the labor intensity of workers.
Since YG Machinery’s establishment in 2005, YG Machinery has experienced rapid development for nearly 18 years. As we all know, it has already occupied a place in the field of machinery manufacturing. Customers from all over the world have relied on YG Machinery for more than ten years. Because YG Machinery has always manufactured the most durable and high-quality machinery on the market. Our drilling rigs including other mechanical equipment are not only sold well in China but also sold overseas.
If you are interested in our Horizontal Directional Drilling Rigs, please contact us. It is worth mentioning that our Truck Water Well Drilling Rig Machines, Full Hydraulic Core Drilling Rigs, Crawler Rotary Drilling Machines, Water Well Drilling Rigs, Anchor Drilling Rigs, Backpack Drilling Rigs, Small Trailer-Mounted Water Well Drills, and Down-the-hole Drilling Rigs are also very popular. We are looking forward to cooperating with you.
On February 14, 2023, we exported 20 Crawler Mounted DTH Drilling Rigs to Myanmar, a Southeast Asian country. Myanmar customer Thakin expressed his gratitude for our delivery speed and smooth transportation process as soon as he received the machine. A few days ago, Myanmar customer Thakin put this machine from YG Machinery into engineering use. The high performance and high work efficiency of the machine have been highly recognized by Myanmar customers Thakin and their colleagues.
YG Machinery has always followed the tenet of manufacturing high-quality machines and providing high-quality pre-sales and after-sales services. Over the past 18 years, we have contributed our meager strength to the construction cause of countries all over the world. In the future, we will unswervingly provide the best service to all countries in the world.
Crawler-mounted DTH drilling rig is also called anopen-pit crawler-type DTH drilling rig. YG Machinery’s open-pit crawler-type down-the-hole drilling rig is a new type of drilling equipment in which the technology is transferred from the traditional DTH Drilling Rigs. It is well redesigned at the demand of large-scale open-pit mines. The traveling, propulsion, rotation, and angle adjustment of the drilling rig are driven by hydraulic pressure, and the power is strong.
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Technical Parameters Of Crawler Mounted DTH Drilling Rig
Model
YGS100A
YGS153
YGS180
YGS300
YGS350
Total Weight
5.95T
3.8T
63T
6.8T
8T
Walking Speed
2.5km/h
2.5km/h
2.5km/h
2.2/3.8km/h
4km/h 2km/h
Diesel Tank Capacity
85L
70L
85L
85L
225L
Shipping Size
6500X2110X 2400mm
4640X1980X 2260mm
6600 X 2110X 2500mm
6600X2220X 2600mm
7600X2350X 2800mm
Drilling Hole Diameter
90-146mm
83-130mm
90-146mm
90-152mm
90-165mm
Power Configuration
YCD4R22T-80
YC2108 33kw/2400rpm
YCD4R22T-80 55kw
YC4DK80-T302
YC4DK100-T304 73.5kw/2200rpm
Highest Horizontal Hole Height
3.2m
2.8m
3.6m
3.25m
3.5m
Main Application Of Crawler Mounted DTH Drilling Rig
The crawler-mounted down-the-hole drilling rig is widely used in blast hole drilling, underwater drilling blasting, and reef blasting projects in open-pit projects. For example metallurgy, mining, building materials, railways, hydropower construction, national defense construction, and earthwork.
On February 12, 2023, We exported 30 Portable DTH Drilling Rigs to the beautiful country of Sudan. We recently received working on-site map feedback from the Sudan customer Tayeb Salih. According to Tayeb Salih, YG DTH Drilling Rigs are simple and easy to operate and work efficiently. Making their work can be completed efficiently and of high quality. Sudan customers have highly evaluated our machines and services during sales. Their satisfaction is our unremitting pursuit. We will always provide optimal services to new and old customers from all over the world.
Down-the-hole Drilling Rig, usually called DTH Drilling Rig by most professionals. It is basically a portable machine on the bottom of a drill string. The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water, or drilling mud).
YG DTH drilling rig machine is an advanced drilling equipment that integrates the downhole drilling system and the screw air compression system. It is powered by a high-quality diesel engine and is compact. It is convenient, flexible, and enjoys high popularity.
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Technical Parameters of Portable DTH Drilling Rigs
Model
YQ70
YQ100
YQ120
Drilling Diameter
60-80mm
80-100mm
100-150mm
Drilling Depth
≥15m
≥25m
≥40m
Power
3kw
4kw
5.5kw
Voltage
380V
380V
380V
Drilling Pipe
OD
42mm
50mm
60mm
Quantity
15pcs
20pcs
20pcs
Impactor OD
70mm
100mm
120mm
Air Consumption
4.5m3/min
6m3/min
10m3/min
Main Application of Pneumatic DTH Drilling Rig
Pneumatic DTH Drilling Rig is often used in the mining industry (blast hole drilling), on construction sites, drilling water wells, and in the oil and gas industry.
The down-the-hole drilling rig machine is mainly suitable for large-diameter blast hole rock drilling in small and medium-sized mines, road construction, water conservancy, and stonework projects, as well as drilling anchor holes in slope support, tunnel support, and foundation pit support. The main drilling object is the rock formation.
YG DTH Drilling Machine is small and lightweight. It is suitable for places where large and medium-sized rigs cannot operate. It is convenient, flexible, and easy to operate.
2. High Efficiency and Stable Performance
YG down-the-hole drilling machine uses excellent motors, with high working efficiency and stable performance.
3. Low Noise and High-Speed Drilling
YG DTH Drilling machine uses electrical energy turned into power, with small noise and strong power. The drilling speed is 3-8 times that of the average rock drilling machine, the rock hardness reaches 9, and the drilling depth of each hour is 8-16 meters.
4. Easy to Install and Disassemble
The overall volume of the down-the-hole drilling rig is relatively small, and it is very easy to install and disassemble, which is conducive to work efficiency.
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Operating Principle of Portable DTH Drilling Rigs
The working principle of the down-the-hole drilling rig is: compressed air drives the piston in the impactor, hitting the drill bit for rock drilling. When the motor is working, the electrical energy is converted into a rotating torque to the reducer to make the drill rod rotate the drill rod connected to the output shaft of the reducer. The excreted air pressure blows to the ground.
