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Crude oil is found deep in the ground As a consequence it cannot bee seen by casual inspection. Geologists therefor have to locate it by detonating seismic charges and recording and analyzing the echos that reflect back from the subsurface formations that may be oil reservoirs.

Obviously they don't just explode these charges everywhere on the off chance of finding oil. Geologists have. over the years. built up vast libraries of the underground rock formations around the world. Only those areas with formations likely to have oil reservoirs are explored further.

Once a likely formation is found, exploratory wells are drilled into the rock. Further studiers are done to determine the amount of oil in the formation (if any) and the ease of extraction.

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14y ago

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