What do workover workers usually do in oil fields?

Petroleum engineering professionals and well-trained workers.

1. petroleum engineering major: graduates of petroleum engineering, petrochemical and other related majors, with relevant professional knowledge and skills, can be competent for oilfield workover.

2. Trained workers: Oil fields or oil companies will provide relevant training to enable workers to master the skills and knowledge needed for workover, and these trained workers can also engage in oilfield workover.