Spanning Canada and the United States, North America is home to a plethora of major industry players, including Exxon Mobil Corp, the world's second-largest publicly traded company after Royal Dutch Shell. The region's oil and natural gas industry is focused on developing oil sands, deepwater gulf prospects and increasingly profitable shale deposits stretching across the continent. One of the premier sweet spots for deepwater exploration, the Gulf of Mexico is the largest body of water indenting the U.S. continental coastline, and its subsea developments continue to spark both national and international interest.
A wireline is an electric cable that is used to lower equipment or devices into a well and can transmit data back to the surface. A number of wireline tools can be lowered into a well in order to gather information; these include gamma ray, nuclear, and magnetic tools, among others. Wireline is usually wrapped around a large spool which can be placed on the back of a truck, or can be a permanent fixture on a rig. A wireline operator is responsible for operation and maintenance of the wireline truck and tools.