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What are the precautions to pay attention to when choosing heavy drilling rods
release time：2024-10-09
source： network
When choosing a weighted drill pipe, it is necessary to comprehensively consider the compatibility between the drill pipe and the drilling rig, the adaptability of the drill pipe type and geological conditions, the compatibility between the drill pipe length and drilling requirements, the quality and durability of the drill pipe, as well as safety and environmental protection requirements.
Drill rod is a key component of a drilling rig, and it should be selected based on the drilling capacity parameters of the rig. At the same time, factors such as borehole diameter and drillable depth also need to be considered. The transmission of torque through drill rods is achieved through the engagement and compression of keys and keyways. Due to factors such as machining accuracy, material properties, and welding quality, torque may not be evenly distributed on each key. Therefore, when selecting the design torque of the drill rod, it is necessary to ensure that it is greater than the design torque of the drilling rig to prevent damage to the drill rod under the action of torque.
For general geological layers such as soil layers, sand layers, gravel layers, and silt geological layers, friction type drill rods can be selected; When encountering gravel, boulder layers, hard plate sand, and hard rock layers, fixed drill rods should be selected. When the geological conditions are complex or the wellbore is unstable, it is necessary to choose longer or more stable weighted drill rods to ensure the safety and efficiency of drilling.
Increasing the length of the drill pipe directly affects the height of the wellhead. When selecting, the well depth and wellhead height should be considered to ensure that the length of the drill pipe can meet the drilling requirements. Different types of drill bits require weighted drill rods of different lengths. For example, longer weighted drill rods are required for core drilling, while shorter weighted drill rods are needed for rapid drilling.
High quality drill pipe materials should have good wear resistance, corrosion resistance, and high strength to ensure that the drill pipe can operate stably for a long time in harsh underground environments. The production process also has a significant impact on the quality of drill pipes. Advanced production processes can ensure optimal dimensional accuracy, surface quality, and internal structure of drill rods, thereby improving their durability and service life.
When choosing heavy drilling rods, it is necessary to consider whether they meet the relevant safety protection requirements. For example, the surface of the drill pipe should be smooth and free of sharp angles to prevent personal injury during handling and installation. With the increasing awareness of environmental protection, drilling operations are also paying more attention to environmental protection. Therefore, when choosing heavy drilling rods, it is necessary to consider whether they meet relevant environmental standards to reduce pollution and damage to the environment.
Therefore, only by selecting appropriate weighted drilling rods can the safety, efficiency, and smooth progress of drilling operations be ensured.
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