Write an article based on this summary:

Decide if you are capable of working long shifts. Prepare for the physical labor aspects of the job. Research the weather conditions at your possible oil rig job. Decide if you can manage the aspects of physical danger.

Article:
Most oil rig crews, both onshore and offshore, work grueling 12-hour shifts. Rotations vary, but most companies keep crews on site for two weeks and then give workers two weeks off. Entry-level oil rig jobs are physically taxing. Most involve moving supplies and heavy equipment, like drill pipes. This kind of work requires a level of strength and endurance that other jobs might not. Oil rigs are often located in places with extreme weather conditions. Offshore and onshore rigs offer distinct challenges.   Onshore rigs. Most oilfields in the United States are in the unforgiving climate of the Southwest, where summertime temperatures regularly exceed 100 degrees F (37.7 C). Drilling in the petroleum-rich fields of Canada reaches full capacity during the bitterly cold winter months, when the frozen ground is better able to withstand heavy equipment and exploration procedures.  Offshore rigs. Workers on offshore oil rigs are at the mercy of the elements, too. North Sea platforms are battered year-round by strong winds and unyielding waves. Rigs dotting the U.S. coastline in the Gulf of Mexico are on alert during the hurricane season (June 1 to November 30). The contents of an oil well are under extreme pressure, but that's only part of the danger rig workers face daily. Cranes are constantly moving massive sections of pipe across the platform. Highly combustible gases are used in everyday operations that include welding and pipe-cutting. All of these aspects of oil rigs constitute a fairly constant level of danger that requires workers to be on guard and prepared to handle emergency situations.