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On the use of drill pipe conditions to explain
Release time:
2018-08-21
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A drill pipe is a steel pipe with a thread at the tail, which is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or bottom hole device at the bottom of the drilling. The purpose of the drill pipe is to carry drilling mud to the drill bit and raise, lower or rotate the bottom hole device together with the drill bit. The drill pipe must be able to withstand huge internal and external pressure, distortion, bending and vibration. In the process of oil and gas extraction and refining, drill pipe can be used many times. On the use of drill pipe to explain the conditions: 1, the rated torque of the selected drill pipe is greater than the large torque of the drilling rig. The rotation speed of the drilling machine shall be less than the rotation speed of the drill pipe (the impact on the drill pipe formed by the moment of inertia of the drilling tool shall be less than the rated torque of the drill pipe.
A drill pipe is a steel pipe with a thread at the tail, which is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or bottom hole device at the bottom of the drilling. The purpose of the drill pipe is to carry drilling mud to the drill bit and raise, lower or rotate the bottom hole device together with the drill bit. The drill pipe must be able to withstand huge internal and external pressure, distortion, bending and vibration. In the process of oil and gas extraction and refining, drill pipe can be used many times.
On the use of drill pipe to explain the conditions:
1. The rated torque of the selected drill pipe should be greater than the large torque of the drilling rig. The rotation speed of the drilling machine shall be less than the rotation speed of the drill pipe (the impact of the moment of inertia of the drilling tool on the drill pipe shall be less than the rated torque of the drill pipe).
2. In a certain stratum, when the sum of the weight of the completely unextended drill pipe cannot make the drill teeth of the drill tool eat into the native soil layer, it is not allowed to use the friction drill pipe to drill.
3. When using friction resistance drill pipe to drill inclined holes, the telescopic direction of drill pipe must be well guided when using casing and drilling tools, and the included angle between the center lines of pipe joints must not exceed 0.4 degrees.
4, drilling vertical holes, drilling inclination exceeds the "JTJ041-2000 highway bridge and culvert construction technical specifications" on the provisions of the hole inclination, easy to cause damage to the friction drill pipe.
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