Eccentric Overburden Drilling Equipment

At the beginning of drilling, the eccentric reaming sleeve spins out along the eccentric guide bit and begins reaming to ensure that the casing and drilling system advance simultaneously.

When drilling into the right position, carefully reverse, eccentric reaming sleeve cycle, and eccentric drilling system from the casing pull out.

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The casing is pulled upwards and the concrete slurry or other filler is sprinkled at the bottom of the hole.

Conventional drilling tools are used in the bedrock to reach the required depth.