Description of drill bit type of rotary drilling rig
28 Feb,2019
According to different geological conditions, there are seven types of drilling tools suitable for sand, silt, clay, sub-clay and other quaternary strata: double-bottom single-door soil layer drilling bucket double-bottom double-door soil layer drilling bucket large diameter double-bottom double-door sand bucket single-layer soil drilling bucket 2, suitable for medium-stroke rock, frozen soil layer, pebble layer, strongly weathered mudstone, sandstone, shale and other hard soil layers: double-door pick sand bucket Single-door pick sand bucket 3. Drilling tools suitable for clay and silt formation: semi-closed clay drilling bucket 4. Drilling tools suitable for weathered bedrock, permafrost and gravel layer: single-head drilling
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