The petroleum industry is much lighter on manpower-per-unit-profit than most other industries, and the job sites involved tend to allow workers to stay away fro

The petroleum industry is much lighter on manpower-per-unit-profit than most other industries, and the job sites involved tend to allow workers to stay away from society for extended periods of time. Oil tankers that are converted to FPSOs and FSOs are among the most expensive storage available for crude.