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2025

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07

Disadvantages of the Double-Wing Swing Block Concentric Drilling Tool

Advantages and Disadvantages of the Double-Wing Swing Block Concentric Drilling Tool:
Advantages: 1. Lower drilling tool procurement cost. 2. Forward rotation for hole enlargement and reverse rotation for retraction, making both enlargement and retraction easier than eccentric drilling. 3. Has certain advantages in drilling medium-hard rock formations and gravel.
Disadvantages: 1. When drilling in hard rock formations, the outer teeth of the swing block wear more quickly. 2. Drilling resistance is greater in hard rock formations, resulting in slower drilling speeds. 3. High wind pressure and high-frequency operations can easily damage the swing block.

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