Excuse me: What are the differences and relationships between drilling rigs, trenchless drilling rigs, horizontal directional drilling rigs and rotary drilling rigs? I am new to the industry and would

Excuse me: What are the differences and relationships between drilling rigs, trenchless drilling rigs, horizontal directional drilling rigs and rotary drilling rigs? I am new to the industry and would like to ask my friends for advice.

Horizontal directional drilling rigs belong to the category of trenchless drilling rigs. Horizontal directional drilling rigs are trenchless pipeline laying construction equipment used in communications, electricity, gas, tap water, rainwater, sewage, heat, chemical and other industries. (For example, there is a river. You need to pass the cable from under the river to the other side of the river. Use a drilling rig to drill a hole and pass it through the river, and then use the cable to pull it over.)

The rotary drilling rig seems to be For example, when building a house, you lay the foundation and use a rotary drill to dig a hole for pouring concrete.