(1) Manual digging of wells: before 1521.
(2) Human impact drill: From 1521 to 1835, it was completed by manpower, special drill bits, suspension ropes, etc.
(3) Mechanical drilling (punch drilling): From 1859 to 1901, the rock was broken by mechanical impact, and the rock breaking and rock cleaning were carried out alternately.
(4) Rotary drilling: Developed in 1901, rotary drilling is a drilling method that drives the drill bit to rotate by power, crushes the bottom hole rock during the rotation, and circulates the drilling fluid to clean the bottom hole. Rotary drilling is further divided into rotary drilling, downhole power drilling, and top drive rotary drilling.

Drilling is the process of using drilling rig equipment and rock-breaking tools to break the formation to form a wellbore. The purpose is to conduct geological evaluation, discover oil and gas reservoirs, and develop oil and gas reservoirs. Construction process: drilling → well cleaning → single connection → tripping → completion of drilling.

Cementing is to run a casing string of a certain size into the well, and inject cement slurry around it to fix the casing on the well wall to prevent the well wall from collapsing. Construction process: run casing to the predetermined depth → install cement head, circulating mud, ground plane pipeline → apply isolation fluid → inject cement → top rubber plug → replace mud → touch pressure → end of cement injection, wait for setting.

Esimtech can provide drilling simulation platforms in the oil industry, which can help students learn and train knowledge and operations about the oil industry. If you want to know more, please feel free to contact us.