Structure and working principle of drilling rig? What are the characteristics of ultra-deep drilling rigs in China?

In geological exploration, mechanical equipment that drives drilling tools to drill holes underground to obtain physical geological data. Also known as drilling machine. The main function is to drive the drilling tool to break the rock at the bottom of the hole and run or lift the drilling tool in the hole.

Can be used for drilling cores.

、

Core, cuttings, gas samples, liquid samples, etc. , find out the underground geological and mineral resources. The drilling depth is 2 ~15000m. Generally, it consists of power machine, gyrator or power head.

, hole bottom pressurization and feeding.

fix

let go

, volume

rise

Drilling machine, drilling machine, etc. According to the rock breaking methods, it can be divided into rotary drilling rig, impact drilling rig and impact rotary drilling rig. According to the drilling depth, it can be divided into land

table

Embroidery sample

(

2

~

50 meters), shallow hole drilling rig (50 ~ 300 meters

)

Medium and deep hole drilling rig (

300

~

600 meters), deep hole drilling rig (

600 ~ 6000 meters

)

, ultra-deep hole drilling rig (

6000 ~15000m); According to the purpose

, can be divided into core drilling rig.

Hydrogeological well drilling rig, oil drilling rig, etc.

; according to

carry out

construction site

, can be divided into

land

Ground drilling rig

, tunnel drilling rig, subsea down-the-hole drilling rig, etc.