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Detailed explanation of the operation procedures of triangular drill pipe
Release time:
2019-05-31
Author:
Source:
A triangular 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 equipment or bottom hole device at the bottom of the drilling. The purpose of the triangular drill pipe is to transport drilling mud to the drill bit and raise, lower or rotate the bottom hole device together with the drill bit. The three-pronged drill pipe must be able to withstand huge internal and external pressure, distortion, bending and vibration. The operation rules of triangular drill pipe are as follows: 1. Apair the hole position. Do not form the operation of the triangular drill pipe, but be careful not to "don't" the triangular drill pipe. 2. Release the drill. Overcome the friction force of the hole wall under the action of the gravity of the triangular drill pipe and the drilling tool.
A triangular 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 equipment or bottom hole device at the bottom of the drilling. The purpose of the triangular drill pipe is to transport drilling mud to the drill bit and raise, lower or rotate the bottom hole device together with the drill bit. The three-pronged drill pipe must be able to withstand huge internal and external pressure, distortion, bending and vibration.
The operating procedures of the triangular drill pipe are as follows:
1Pair position. Do not form the operation of the triangular drill pipe, but be careful not“Don't.”Triangular drill pipe.
2Drill release. Under the action of the gravity of the triangular drill pipe and the drilling tool, the process of overcoming the friction force of the hole wall and the mud buoyancy to achieve the expansion of the triangular drill pipe is called drilling. The correct drilling sequence is: the outer rod is lowered into place, and the adjacent inner rod starts to extend from the inner of the outer rod, from the outside to the inside, one by one.
32. Drilling, pressurization, forward rotation drilling at appropriate rotation speed.
42. Unload the whole bottom. Be careful not to unload and close the bottom.“Don't.”Triangular drill pipe. Note: When using friction tripod drill pipe for drilling, always include“Hole location, drilling, drilling, lifting, unloading and bottom closing”Five in order. To do“Not in order”,“No disorder”,“Not randomly increasing”.
Precautions for installation of triangular drill pipe
(1) When installing the triangular drill pipe, the action shall be slow, and the triangular drill pipe shall not collide with the power head and mast, so as to avoid the triangular drill pipe body from being stuck due to collision and deformation.
(2) When installing the drilling tool, it is not allowed to push the drilling tool with square head.
(3) When the casing is dropped, the casing shall not be pushed by the triangular drill rod.
(4) It is not allowed to install the triangular drill pipe on the drilling rig for long-distance transportation and mobile construction site.
Tips for Reducing Wear of Triangular Drill String
1High-strength materials should be used in the research and development of high-quality materials for triangular drill pipes, and lightweight aluminum alloy and other materials should be selected as triangular drill pipe materials. Improve the processing technology and do a good job in heat treatment to make the internal structure of triangular drill pipes more refined and perfect.
2If the verticality of the drilling is high, the contact surface between the triangular drill string and the hole wall will be reduced accordingly, and the rotation around the axis will be increased, thus reducing the friction between the triangular drill string and the hole wall.
3Use solid-free drilling fluid to reduce the viscosity and density of drilling fluid to reduce the erosion and wear of the triangular drill string;PHvalue, inhibit the corrosion of acid gas on the triangular drill string, and use oxygen scavenger to reduce the oxidation corrosion of the triangular drill string.
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Key words:
Drill pipe, triangular, technology, drilling, material, installation
