roughneck (drilling): "A low-ranking member of the drilling crew. The roughneck usually performs semiskilled and unskilled manual labor that requires continual hard work in difficult conditions for many hours. After roughnecks understand how the rig operates and demonstrates their work ethic, they may be promoted to other positions in the crew."
"This might actually refer to roughneck duties, or to one of the other crew positions, such as lead tong operator, motorman, derrickman, assistant driller or even driller."
http://www.glossary.oilfield.slb.com/Display.cfm?Term=roughn...
Do you have experience with this? Likes/dislikes of the job?