Core Barrel Outer Tube

Core Barrel Outer Tube

The outer tube of the core barrel used in drilling is a metal pipe that surrounds the inner tube and is located on the outer part of the core barrel system. This tube serves several functions:

1. Support and Protection: The outer tube protects the inner tube and the collected sample from external effects during drilling. It prevents soil or rock from escaping, thus avoiding sample contamination.

2. Drilling Structure Stability: The outer tube prevents the collapse of the walls of the drilling hole, ensuring the drilling process is conducted safely. This creates a stable structure during the drilling process.

3. Sample Cleanliness: The outer tube prevents soil and rock samples from spilling out during drilling, ensuring that samples are collected cleanly and orderly.

4. Equipment Protection: The outer tube helps to prevent wear and damage to the drilling equipment, thus extending the lifespan of the equipment.

In summary, the core barrel outer tube maintains the integrity of the structure and samples during drilling, ensuring a safe and effective drilling process.