Almost all oil and natural gas are found deep underground in tiny holes in rocks. Millions of years ago a sea covered much of what is now dry land. In prehistoric times, tiny plants and animals lived in the sea. When these creatures died, they sank to the bottom of the sea, and got buried in layers of mud and sand. As the ages passed, this organic material sank deeper and deeper. The earth's crust changed its shape, and put intense pressure and heat on what was once only plants and tiny animals. Heat from the earth's interior and the weight of the overlying rocks gradually changed the energy-containing substances in the accumulated plants into hydrocarbon liquids and gases. As millions of years passed, these deposits turned into chemicals that are now called ‘hydrocarbons...
Book results for how oil & gas explored
Geology of Fossil Fuels --- Oil and Gas - by Zhaocai Sun - 368 pages
Undiscovered Oil and Gas Resources - by National Research Council (U.S.), ... - 192 pages
Natural Gas Monthly
www.business.com/directory/energy_and_... oil_and_gas/exploration_and_production/ - 108k
www.tcs.com/eis/ServiceLines/vcoshow. aspx?sname=GeospatialTechnologies&index=... - 36k -
en.wikipedia.org/wiki/Oil_exploration - 29k and many more...
· 1 decade ago