In the oil and gas industry, before moving a drilling rig to location. It is important to study the lease area and pin point the right location to drill wells.
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To achieve this, it may be necessary to read and interpret maps like the one in this post. The map (above) is a topographic map.
A topographic map can tell how deep the well can be before getting to the oil or gas reservoir. Again, through the Topographic map, it is possible to choose the easiest route to pass through when moving the rig to location especially on a land rig.