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Classification and Comparison of Advantages and Disadvantages of Double-tube Diamond Bits
Release time:
2018-10-25
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Although the diamond bit in the drilling industry is the most widely used, but the double tube diamond bit also plays an important role, especially in deep hole and super deep hole drilling, the application of the double tube bit is much higher than the single tube. In the actual drilling operation, the double-tube drill bit often uses the double-tube drilling tool, and its main advantage is that it does not need to frequently carry out the drilling and pouring out the core, and the core can be quickly lifted out of the hole by the lifting mechanism of the drilling tool, and the process does not affect the normal drilling. The above introduces the classification and comparison of advantages and disadvantages of single-tube diamond drill bits. In this article, the gold drill bit factory will mainly introduce the classification and advantages and disadvantages of double-tube drill bits. 1. double-tube diamond
Although the diamond bit in the drilling industry is the most widely used, but the double tube diamond bit also plays an important role, especially in deep hole and super deep hole drilling, the application of the double tube bit is much higher than the single tube. In the actual drilling operation, the double-tube drill bit often uses the double-tube drilling tool, and its main advantage is that it does not need to frequently carry out the drilling and pouring out the core, and the core can be quickly lifted out of the hole by the lifting mechanism of the drilling tool, and the process does not affect the normal drilling. The above introduces the classification and comparison of advantages and disadvantages of single-tube diamond drill bits. In this article, the gold drill bit factory will mainly introduce the classification and advantages and disadvantages of double-tube drill bits.
Classification of 1. double-tube diamond drill bits
Double-tube diamond bits are mainly used in geological exploration, oil and gas exploration and hydrological detection, these drilling tasks often need to drill hundreds of meters or even thousands of meters to obtain more accurate geological data. The classification of double-tube diamond drill bits mainly includes single-acting double-tube and double-acting double-tube, while single-acting double-tube is commonly used in China. The types of drill bits mainly include electroplated double-tube diamond drill bits, hot-pressed sintered rope core diamond drill bits and electroplated rope core diamond drill bits.
1, Electroplated double tube diamond drill bit
The size of the electroplated double tube drill is the same as that of the hot pressing, which is the landmark thread and the inner and outer diameter. Due to the low production efficiency of the hot-pressed double-tube drill, the matrix hardness is difficult to strictly control, resulting in poor stability and high price. Therefore, the electroplated double-tube drill bit gradually appearing in the market after 2000 is replacing the market share of hot-pressed drill bit. In the core-pulling detection drilling task of drilling reinforced concrete, the footage efficiency of electroplated drill bit is much higher than that of hot-pressed drill bit, and the wear resistance can surpass that of hot-pressed drill bit with the update of technology. Therefore, in the future of double-tube drilling tools, electroplating double-tube bits will gradually replace hot-pressed bits.
2, hot pressing sintering rope core diamond drill bit
The rope core diamond drill bit can be said to be the protagonist of geological exploration deep hole drilling, whether it is domestic or foreign most deep hole exploration or the use of rope drill bit. The main reason is that the rope drill can drill deep holes without lifting the drilling tool to unload the core, but the core is lifted out of the inner tube through the rope drilling tool in the fishing system. In practical application, the quality of the hot-pressed rope drill bit must be very superior, because if the service life of the drill bit is not long, frequent lifting of the drilling tool and replacement of the drill bit will greatly affect the drilling efficiency. Therefore, the hot-pressed rope drill bit of the gold drill adopts metallurgical formula to ensure the service life of a single drill bit is more than 100 meters without slipping.
3, Electroplated rope core diamond drill bit
Although hot-pressed ropes have an absolute advantage in the deep-hole exploration market, they are prone to slip with slow or even no footage when drilling into extremely hard rock formations. Electroplated rope drill bits are recognized by captors precisely because of their high efficiency in hard rock formations. In particular, the outstanding drilling speed of 5-10 degree hot-pressed rope diamond drill bits of gold drill bits when drilling into extremely hard stones such as granite is widely recognized. At present, it has caused extensive influence in the market. It is believed that there is still much room for development of such products for a period of time.
Comparison of Advantages and Disadvantages of 2. Double-tube Diamond Bits
Single-tube drill bit we from the drill bit drilling speed, total footage and unit footage diamond consumption of three aspects to compare, double-tube drill bit due to the deep hole drilling more, so will from the drilling speed, cost performance and scope of application to discuss.
1, Double tube diamond drill bit drilling speed comparison
In terms of drilling speed, due to the relationship between technology and size in this province, the footage efficiency of electroplated double-tube diamond drill bit is much higher than that of rope diamond drill bit. The main reason is that the cutting area of its matrix end face is only about 1/3 of that of rope drill bit. The smaller contact area and larger load greatly increase its drilling aging. This also meets the requirements of high drilling speed in concrete core pulling operation. Therefore, electroplating double-tube drill bits should be preferred in the core pulling detection drilling process. If the aging requirement is not high, electroplating single-tube diamond drill bits can be used, because electroplating single-tube drill bits have better wear resistance.
2, double tube diamond drill bit cost comparison
The key to determining the cost of drilling is naturally the captain's greatest concern. From the perspective of comprehensive drilling aging, wear resistance and price, the most cost-effective is the electroplated single-tube diamond drill bit, followed by the electroplated double-tube, and finally the hot-pressed sintered drill bit. Therefore, the above selection sequence should be followed on the basis of being able to complete the drilling task with a gold drill single pipe bit.
3, double tube diamond drill bit applicable scope comparison
The most widely used is the electroplating double-tube drill, which can be used for concrete core-pulling detection, can also be used for normal bedrock drilling, but also to the rope drill hole. However, the application range of hot-pressed rope drill is also very large. Generally, deep hole drilling is inseparable, especially for deep holes of nearly 1,000 meters. Super wear resistance is its most prominent feature. For electroplated rope drill bit is generally suitable for hole depth below 800 meters, and has good efficiency for drilling into extremely hard rock formations.
In recent years, there has also been a double-tube drill bit with diamond composite sheet as the cutter head, which is often used in practical applications because it is only suitable for drilling into weathered layers and softer broken layers below grade 6.Single tube diamond drill bitInstead, it has no application value in the deep hole. In addition, when using the electroplated rope coring diamond drill bit of gold drill, attention should be paid to the drilling mode of low pressure and high rotation speed as far as possible. Under the condition of ensuring the normal footage, high pressure should not be adopted for the high footage efficiency, which is easy to produce irreversible hard damage to the drill bit matrix, causing the drill bit to slip and wear-resistant.
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