It has the following features and advantages:

1. Powerful drilling capability: Hydraulic drilling rigs usually have high-power and high-torque hydraulic drive systems that can cope with various geological conditions and rock types. They are able to easily drill into hard formations such as rock and concrete.

2. High efficiency and fast drilling: The hydraulic drilling rig has the ability to quickly drill and retrieve drill pipes. The hydraulic system provides higher power and speed, which can speed up drilling progress and improve work efficiency.

3. Flexibility and adaptability: The hydraulic drilling rig has a small volume and weight, which is easy to operate in different working environments. They can accommodate different drilling angles and positions, including horizontal, vertical and inclined.

4. Automation and remote control: Modern hydraulic drilling rigs are often equipped with automation and remote control functions. Operators can operate the rig through the control panel or remote control, which improves safety and ease of operation.

5. Energy Efficiency: Hydraulic drilling rigs use a hydraulic system to convert energy. Compared with traditional mechanical drilling rigs, energy utilization is more efficient. The hydraulic system can realize energy recovery and reuse, reducing energy waste.

6. Durability and reliability: The structure of the hydraulic drilling rig is simple, easy to maintain, and has a long service life. The relatively few mechanical parts of the hydraulic system means fewer wearing parts and failure points, improving the reliability and stability of the equipment.

Overall, hydraulic drilling rigs have the advantages of powerful drilling capabilities, high efficiency, flexibility and automation, making them commonly used drilling equipment in many engineering fields.