-
-
-
-
Honor
-
-
-
-
-
Contact
-
Main Functions of Cable Directional Drill Pipe
Release time:
2021-12-16
Author:
Source:
The cable directional drill pipe is an important part of directional drilling equipment. It is a component with complex force and harsh working conditions in the process of directional drilling. Its main functions include: 1) transmitting the axial pressure exerted by the drill bit during drilling to the drill bit, and bearing the reverse torque of the bottom hole motor; 2) transmitting the pushing and pulling force exerted by the drilling rig on the drilling tool during tripping; 3) As a medium channel, the flushing fluid is transported to the bottom of the well. In order to facilitate the handling of accidents in the hole. The cable drill pipe can be used for both directional drilling and regular rotary drilling. Therefore, the cable drill pipe should also meet the requirements of applying torque to the drill bit during regular rotary drilling.
The cable directional drill pipe is an important part of directional drilling equipment. It is a component with complex force and harsh working conditions in the process of directional drilling. Its main functions include:
1) Transmit the axial pressure exerted by the drill bit during the drilling process to the drill bit, and bear the reverse torque of the bottom hole motor;
2) During tripping, transfer the pushing and pulling force applied by the drilling rig to the drilling tool;
3) As a medium channel, the flushing fluid is transported to the bottom of the well. In order to facilitate the handling of accidents in the hole. The cable drill pipe can be used for both directional drilling and regular rotary drilling. Therefore, the cable drill pipe should also meet the requirements of applying torque to the drill bit during regular rotary drilling.
Specification and model of directional drill pipe: Φ70mm * 3m Φ73mm * 3m Φ76mm * 3m Φ89mm * 3m
Process requirements for directional drill pipe: friction welding type, thick and thick type (requiring overall heat treatment)
Wall thickness of directional drill pipe material: cable alloy drill pipe material is 26Crmo material, 26CrMo as a steel blank, can be tempered into oil pipe steel grade, S135, G105, etc., commonly used specifications 60 73 88.9 101 127 and other specifications. The wall thickness of the non-milling groove type is 8mm, the wall thickness of the milling groove type is 10mm4, and the length of the drill pipe is 1.5m, 2m and 3m, of which the length of 3m is commonly used;
Drill pipe tensile capacity: 800kN; Drill pipe torsional capacity: 6500N · m; Water pressure: 7-10mpa
Insulation connector resistance: ≥ 500MΩ, signal transmission conductivity resistance: 0.5-1.5 Ω, service life: 20000m or 1 year.
Key words:
Drill pipe, 3m, directional, drilling, applying, drill bit, material, torque, length
Previous Page
Next Page
Previous Page:
Next page:
