The main function is that the well drilling machine rotates the drilling tool in the well and drives the well drilling machine bit to break the rock. It mainly consists of well drilling machine turntable, water tap, top drive well drilling machine drilling device, well drilling machine drilling rod column and drill bit. In addition, the well drilling machine rod column and drill bit also play the role of circulating high pressure drilling fluid. The well drilling machine turntable and top drive unit are the core of the rotary system and are the core of the three working units of the well drilling machine.

2. Well Drilling Machine Circulation System Equipment and Tools
The main role is to force the circulation of the drilling machine drilling fluid, timely cleaning the bottom of the well, carrying rock chips, protecting the well wall and providing high pressure power fluid to the screw drilling tools and turbo drilling tools. It is mainly composed of well drilling machine drilling pump, ground well drilling machine pressure pipe sink, well drilling machine drilling fluid solid control equipment and blending device, etc. Well drilling machine drilling pump is the core of the circulation system and is one of the three major working machines of well drilling machine.