Construction Case ‖ Xitan MDL-C150 Top Drive Drilling Rig Construction in Jinan, Shandong

Location: Jinan, Shandong

Drilling rig model: MDL-C150

Drilling tool configuration: 89 impact drill pipe with spiral blades

Process type: Foundation pit inclined anchor, ordinary anchor cable

Stratum conditions: 1–15 m backfilled sandy soil layer

Construction angle: 15° Hole diameter: 120 mm Hole depth: 15 m

Total hole time: 25 min (20 min pure drilling + 5 min drill removal)

Construction process steps:

1. Move the drilling rig to the hole position, adjust the angle, and set the outriggers on the ground (try to keep the tracks and outriggers on the ground together).

2. Install the 89 impact drill pipe and impact drill bit, and install the hole opening guide sleeve.

3. Start drilling, rotate in fast gear, feed slowly, and pay attention to pressure and slag discharge conditions (when resistance is encountered, switch to impact drilling and use the spiral blades to discharge slag).

4. When the required depth is reached, remove the drill pipe and stack it neatly.

5. Move the rig to the next hole position.

Summary: For a 120 mm hole diameter and 15 m depth, drilling takes 20 minutes, and drill removal plus relocation takes 10 minutes; about 300 m of hole can be completed in 10 hours.