How to choose the appropriate type of drill pipe based on geological conditions?

Date: 2025-02-24     Source: SDK      Author: admin

Choosing the appropriate type of drill pipe based on geological conditions is key to ensuring drilling efficiency and equipment safety. The following are recommendations for selecting drill rods for different geological conditions:

1. Soft soil stratum
Drill rod type: Lightweight and high toughness drill rod
Recommendation reason : Soft soil has less wear on drill rods, but requires higher toughness and torsional performance of drill rods to adapt to rapid drilling and frequent tripping operations.

2. Hard rock formation
Drill rod type: High strength and wear-resistant drill rod
Recommendation reason: Hard rock causes significant wear on drill rods, requiring high-strength and wear-resistant drill rods to cope with high drilling pressure and high torque.

3. Fractured zone strata
Drill rod type : High torsion and impact resistant drill rod
Recommendation reason: The geological conditions in the fractured zone are complex, and the drill pipe needs to have good resistance to torsion and impact to cope with frequent vibrations and impacts.

4. Mixed formation
Drill rod type: drill rod with strong comprehensive performance
Recommendation reason: Due to the diverse geological conditions of mixed formations, it is necessary to choose drill rods with strong comprehensive performance, taking into account strength, toughness, and wear resistance.

5. High-temperature and high-pressure formation
Drill rod type : Special drill rod resistant to high temperature and high pressure
Recommendation reason : High temperature and high pressure environments require high drilling rod materials, and special drilling rods that are resistant to high temperature and high pressure should be selected to ensure safety and stability.

6. Corrosive formation
Drill rod type: corrosion-resistant drill rod
Recommendation reason: For corrosive formations, it is necessary to choose drill rods made of corrosion-resistant materials to extend their service life.

7. Deep and ultra deep wells
Drill rod type: High strength and high toughness drill rod
Recommendation Reason : Deep and ultra deep wells require extremely high strength and toughness of drill pipes, and it is necessary to choose drill pipes with high strength and toughness to cope with high drilling pressure and high torque.

8. Directional and horizontal wells
Drill rod type : High torsion and fatigue resistant drill rod
Recommendation Reason : Directional and horizontal wells require high resistance to torsion and fatigue of drill pipes, and it is necessary to choose drill pipes with high resistance to torsion and fatigue to adapt to complex wellbore trajectories.