For water well drilling rigs, the general requirements are simple configuration, low energy consumption, easy operation, mobility, versatility and small size. In practice, the choice of drilling rig must be based on the stratigraphy, hole size, and depth as well as the drilling method.
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Drilling efficiency depends on the formation, the skill/experience of the operator, the type of drilling machine and the drilling method.
For rocky conditions, the most efficient method is to use a downhole drilling rig in conjunction with an air compressor.
For soil, clay and sand conditions, the best method is to use a drilling rig with a mud pump.
For cobbles, a reverse circulation system is the most suitable method of drilling. Simply add a set of reverse circulation drilling tools to the existing rig.
Truck Water Well Drilling Rig
The price of the machine is a key factor in one's choice of the right drilling rig and is a one-off investment. The price of the machine increases with the diameter and depth of the hole.
From the Drilling method point of view, a DTH drilling rig is more expensive than a coring drilling rig, and the price of a hydraulic drilling rig is higher than a vertical shaft drilling rig, which is a more mechanical drilling machine
From mobility point of view, truck-mounted drills cost more than crawler-mounted drills.
Operating costs significantly affect the profit one can make in the drilling business. Net profit is the amount of money a driller receives from well users for water well drilling minus operating costs.
Operating costs include personnel salaries, casing, mud and fuel costs, and rig maintenance costs.
In terms of rig type, Down The Hole (DTH) rigs have higher operating costs than rotary rigs that work with mud pumps. This is because submersible drilling rigs require air compressors and consume very high amounts of fuel. Vertical drilling rigs (mechanically driven) are more economical than hydraulic rigs.
Water Well Drilling Rig
In terms of the working principle of the drilling rig, there are 3 main drilling methods.
The Down The Hole drilling method needs to be used in conjunction with an air compressor. This is a good method for rock conditions.
Mud pump rotary drilling is a more economical way of drilling and is ideal for soil, sand, and clay formations and, for rock, has a lower drilling speed than submersible drilling.
With auger drilling, no air compressor or mud pump is required for the drilling process. However, it can only drill soils, clays and sands.
In terms of the drilling process, we have 2 drilling methods.
Direct circulation drilling, where the drilling fluid (air or mud) is passed through the drill pipe and the drill cuttings are removed through the space between the outside of the drill pipe and the hole wall.
Reverse circulation drilling, which requires a double-walled drill pipe. The drilling fluid passes through the space between the inner wall of the outer pipe and the outer wall of the inner pipe. It is the most effective drilling method for cobbles and sandy, soil geological structures.
One needs to consider the availability of spare parts when buying a drilling rig. It is part of the operating costs. If spare parts are not readily available, it means you have to pay more to get them and it takes longer. All this will definitely affect the profitability of the drilling business.
A water well drilling rig is equipment for drilling holes on the earth to tap water below the surface.
When you want water effectively without causing massive disruption to the surrounding area, the drilling rig will come in handy.
The water well drilling rigs tend to vary in size. It can be a gigantic machine that is moved around by large vehicles or a small machine that you can manually move around.
Are you planning to drill water wells? Getting the best drilling rig equipment should be your top priority.
The best rig is the one that will operate at high efficiency while at the same time give you maximum efficiency.
In this guide, we will give you practical tips for choosing the best water well drilling rig.
Your choice of water drilling equipment will depend on the drilling technology of the equipment.
Apart from size, shape, and design, water well drilling equipment differs in terms of the technology or technique they use for drilling.
There are different types of drilling technologies, and each can work in specific areas.
Essential drilling technologies that you should know when buying water well rigs in China include;
This type of drilling technology is very suitable for areas with soft soil. Although it is popular in oil and gas production, it is also applicable to drilling water wells.
Rotary drilling entails bringing to the surface the cuttings of the drill. This is possible due to the pressure of the drilling fluid that is injected through the drill string.
The drill string helps to shield the wells&#; walls from collapsing due to the forces generated during the drilling process.
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This technique is also known as rotary hammer drilling or rotary percussion drilling. This is because the drilling rig features a rotary cutter and a pneumatic hammer.
The excavated material is lifted up the well by the pressure which is exerted by the hammer. The compressed air is strong enough to do the lifting.
Drilling rigs that use this technology are quite powerful and tend to have high drilling rates. They are ideal for drilling through rocky surfaces.
They are also suitable for drilling artesian water wells ( wells in which water rises naturally through the surface suing the groundwater pressure).
The drilling technology is also suitable for deep well drilling. It can drill up to meters deep.
In case the drilling bit is more eccentric, the drilling process can be done using a casing advancement system. This is where tubes are installed to reinforce the holes as the drilling continues.
This type of water well drilling technology is slightly similar to the rotary drilling process. The only difference is it uses a crown to extract a sample.
Drilling rigs that use this technology are also well-suited for the soft soil.
Auger boring uses an auger, which is also called a worm screw. The drilling rig is mainly applicable to areas with sand and unconsolidated clay.
The worm clay or auger is responsible for bringing the excavated material to the surface. For deep drilling, you will have to regularly lift the auger to empty the excavated content before proceeding with the drilling process.
In this water well drilling technology, the drilling rigs are designed to operate on a percussion system. However, one rig remains outside the borehole.
This drilling rig is mainly applicable for the small-diameter water wells where you don&#;t want the water well to cover a large surface area.
The system is also suitable for rocky grounds and shallow boreholes. Most importantly, the good thing about these rigs is they can operate in any direction.
Percussion drilling has a dropping tool that breaks rocks before it proceeds with the drilling process. Since the drill bit is vertically positioned, the drilling is automatically vertical.
The case is drilled to prevent the well from collapsing during the drilling process. The cuttings from the drill bit are usually reassembled to prevent interference with the drilling. They are usually replaced with a flap valve bailer.
The installation of horizontal pipelines mainly uses this drilling technology. The tube is continually pushed horizontally by the percussion method.
Remove the excavated material by water injection or auger
This water well drilling technology prevents vibration and disruption on the surface
It also eliminates the need for digging trenches during the water drilling process.
The drilling rig price is one of the determinant factors that you should consider when deciding to buy water drilling rigs in China. After all, a water drilling rig is a form of investment, and you wouldn&#;t want to see your money going down the drain.
Water well drilling rig cost majorly depends on its specifications. You will pay more to get rigs that have premium specifications. For example, the wider the diameter of the rig, the higher the price. Similarly, the cost is directly proportional to the depth of the rig.
Drilling technology or drilling method also determines the price of water well drilling rigs. Some drilling methods used by the rig are more expensive than others. For example, a hydraulic drilling rig is more expensive than a shaft drilling rig.
Another factor that determines the cost is the water well drilling rig types. Here, we compare the trailer-mounted rig vs crawler rig. The latter is likely to be more expensive.
Water well drilling machine manufacturers and suppliers directly impact the prices of the water drilling machines. This explains why some drilling rig brands are expensive or cheaper than others.
In case you are looking for a low-cost water well drilling rig, you should compare the prices from different manufacturers and suppliers.
As we have pointed out, one of the tips for choosing the best water well drilling rig is the manufacturer.
For this reason, we at Sollant hope to provide a comprehensive solution when it comes to the drilling rig machines.
We are a global manufacturer and supplier of water well drilling rigs in China. This means that you can buy the rigs from wherever you are, and we will be ready to deliver.
Firstly, we have cutting-edge technology, which guarantees the quality of the final drilling rigs. Secondly, our team of water well rig technicians supervises the process to ensure that the product is perfect.
Moreover, our manufacturing standards are to the optimum levels and at par with the global requirements.
Are you looking for a low-cost water well drilling rig? Well, we have different rigs, and you will find one that matches your budget.
Contact us to find out more about the best water well drilling rigs in China.
Tips for Water Well Drill Rig Selection
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