Double tube drilling tool accessories
Double tube drilling tools are mainly divided into two types: single action double tube and double action double tube. Their accessories are matched around the inner tube system and the outer tube system. The core is used for geological drilling and coring, and can adapt to different complex formati......
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Product Description
Double tube drilling tools are mainly divided into two types: single action double tube and double action double tube. Their accessories are matched around the inner tube system and the outer tube system. The core is used for geological drilling and coring, and can adapt to different complex formations. The following will introduce the core accessories and overall characteristics of the two types of drilling tools:
1.core components
Inner tube system accessories: including inner core tube, cartridge card assembly (cartridge holder, cartridge card plate, cartridge card spring, etc.), cartridge spring, cartridge spring seat, stabilizer ring, etc. The inner core tube is the core component that accommodates and protects the core, and some may also be equipped with semi composite tubes or transparent lining tubes to further ensure the integrity of the core; The cartridge assembly is responsible for stably grasping the rock core, and the cartridge spring can control the opening and closing of the cartridge plate, making it convenient for core extraction operations; The combination of the card spring and the card spring seat can firmly hold the rock core to prevent it from falling off, while the straightening ring can ensure that the inner tube is centered and reduce rock core blockage. In addition, the single action dual tube inner tube system is also equipped with a single action device, including a main shaft, various bearings, etc., to achieve the function of inner tube stillness.
External pipe system accessories: including external core pipes, upper/lower hole openers, external pipe joints, drill bits, etc. The outer core tube is responsible for transmitting drilling pressure and torque, connecting the drill bit to complete rock cutting; The reamer can enlarge the diameter of the drilling hole, avoiding the hole wall from scratching the drilling tool, and forming a large annular gap for easy discharge of rock powder; Drill bits are often paired with hard alloy or diamond materials to adapt to rock and mineral layers of different hardness, while outer pipe joints are used to firmly connect various components and ensure the overall stability of the drilling tool.
2.Core Features
Single action dual tube drilling tool accessories: The core advantage of this type of accessory is high core quality. The single action device keeps the inner tube stationary when the outer tube rotates, avoiding mechanical crushing of the rock core by frictional vibration and preventing direct flushing of the rock core by flushing fluid. The mud channel has a large area, allowing for smooth discharge of rock powder and reducing drilling accidents; The inner tube can protect the core sample, making it larger in diameter and less prone to wear. It is suitable for various scenarios such as in-situ testing and hydrological testing, and some accessories with semi composite tubes can also meet the coring needs of loose and fractured formations.
Double action dual tube drilling tool accessories: The overall structure of the accessories is simple, and the processing and usage costs are relatively low. The inner and outer pipes can rotate synchronously, suitable for various rock and mineral layers ranging from soft and prone to collapse at level 6 to medium hard and broken at level 7-9. The flushing liquid flows between the inner and outer pipes, which can reduce the erosion of the rock core. The vibration during the drilling of the inner pipe helps the rock core enter the pipe, avoiding self jamming of the rock core and improving the efficiency of core extraction. The improved accessories of this type can significantly improve the heart rate and drilling quality in projects such as water and electricity grouting and anti-seepage wall bedrock identification.
1.core components
Inner tube system accessories: including inner core tube, cartridge card assembly (cartridge holder, cartridge card plate, cartridge card spring, etc.), cartridge spring, cartridge spring seat, stabilizer ring, etc. The inner core tube is the core component that accommodates and protects the core, and some may also be equipped with semi composite tubes or transparent lining tubes to further ensure the integrity of the core; The cartridge assembly is responsible for stably grasping the rock core, and the cartridge spring can control the opening and closing of the cartridge plate, making it convenient for core extraction operations; The combination of the card spring and the card spring seat can firmly hold the rock core to prevent it from falling off, while the straightening ring can ensure that the inner tube is centered and reduce rock core blockage. In addition, the single action dual tube inner tube system is also equipped with a single action device, including a main shaft, various bearings, etc., to achieve the function of inner tube stillness.
External pipe system accessories: including external core pipes, upper/lower hole openers, external pipe joints, drill bits, etc. The outer core tube is responsible for transmitting drilling pressure and torque, connecting the drill bit to complete rock cutting; The reamer can enlarge the diameter of the drilling hole, avoiding the hole wall from scratching the drilling tool, and forming a large annular gap for easy discharge of rock powder; Drill bits are often paired with hard alloy or diamond materials to adapt to rock and mineral layers of different hardness, while outer pipe joints are used to firmly connect various components and ensure the overall stability of the drilling tool.
2.Core Features
Single action dual tube drilling tool accessories: The core advantage of this type of accessory is high core quality. The single action device keeps the inner tube stationary when the outer tube rotates, avoiding mechanical crushing of the rock core by frictional vibration and preventing direct flushing of the rock core by flushing fluid. The mud channel has a large area, allowing for smooth discharge of rock powder and reducing drilling accidents; The inner tube can protect the core sample, making it larger in diameter and less prone to wear. It is suitable for various scenarios such as in-situ testing and hydrological testing, and some accessories with semi composite tubes can also meet the coring needs of loose and fractured formations.
Double action dual tube drilling tool accessories: The overall structure of the accessories is simple, and the processing and usage costs are relatively low. The inner and outer pipes can rotate synchronously, suitable for various rock and mineral layers ranging from soft and prone to collapse at level 6 to medium hard and broken at level 7-9. The flushing liquid flows between the inner and outer pipes, which can reduce the erosion of the rock core. The vibration during the drilling of the inner pipe helps the rock core enter the pipe, avoiding self jamming of the rock core and improving the efficiency of core extraction. The improved accessories of this type can significantly improve the heart rate and drilling quality in projects such as water and electricity grouting and anti-seepage wall bedrock identification.
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