【Construction case】HDL-168D top drive drilling rig

Basic Information

Location (province): Guangxi

Location (city): Liuzhou

Drilling rig model: HDL-168D top drive rig

Drill tool configuration: 146 casing + 73 drill pipe

Process type: foundation pit anti-floating anchor rod

Construction technology: anchor bolt

Stratigraphy: fully weathered calcareous siltstone

Construction Angle (°): 90

Pore size (mm): 150

Hole depth (m): 6

Construction efficiency (min): 20

Pure drilling time (min): 15

Pure removal removal drill time (min): 3

Construction Technology

1、Align with the hole position, adjust the construction Angle, and support the legs to the ground;

2、The first step of the first casing drilling in place;

3、Hold the sleeve with the lower sleeve, reverse the power head and open the casing and put the first drill pipe, start the water pump to clean the sleeve gravel; clamp the drill pipe, reverse the power head, and remove the drill pipe;

4、Put the drill pipe into the casing in advance, connect the double pipe with the power head, and start the pump impact rotary drilling;

5、Remove the drill pipe after drilling to the required rock entry depth;

6、Put the anchor bolt into the casing;

7、Remove and remove the casing.

                           —— Anman after-sales service: Wang Qilong