Common Drilling Methods of Rotary Drill
Release time:
2021-03-25
1. drilling type:
Drilling and drilling application track plate, the application of double bottom sand bucket with friction drilling tools, drilling relatively stable friction resistance of small geological structure, general geological strength within 400 kPa, such as mud layer, sand and sand layer, according to the track plate rotation drilling, can reduce friction resistance and improve the drilling machine speed.
2. crushing type:
Crushing drilling shall be carried out by cutting picks, and most of them shall be carried out by double-bottom rock drilling bucket. According to geological strength, friction resistance or machine locking drilling tools can be equipped to drill gravel, mudstone, slate, diabase and vertical weathered layer with a strength of 500 kPa to 1000 kPa, and the crushing drilling shall be carried out to aluminum alloy points on cutting picks according to pressure.
3. rotary type
Double-bottom sand fishing and double-bottom rock drilling bucket can be applied, and they can also be used in conjunction with bao'e teeth. because the types of geology are different, the drilling method changes with each other. for example, when pebbles are arranged irregularly, they cannot be drilled and broken. rotary drilling can be used, the drilling tool can be hung with the main coil, the pebbles can be rotated with the tip of the drilling bucket teeth, and the drilling bucket can be released in fluctuation, this practical operation method is to bypass the strength and vibration of the pebble.
4. grinding type:
The rock layer measured by one-week compressive strength strength is from several Mpa to several tens of Mpa. Generally, the rock end bearing pile is ground into rock according to the barrel drill ring cutting, or the tooth shaft drill is ground into rock. In addition, the type, strength, ductility and crack probability are not removed according to the type, strength, ductility and crack of the rock layer.
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