Good question. The answer is: no and maybe!
There is no oil or gas production in Somalia. Somalia has no proven reserves.
Underground depostis may exist. For underground deposits to become commercial projects, there must be commitments to spend money from investors. The pull out of Africa Oil in January 2009 does bode well for more exploratory efforts, at least in the short term.
See related links.
The Government, and people of Somalia of course.
Gas deposits are often found on top of oil deposits because natural gas is less dense than oil, so it tends to migrate upwards through the rock layers. As oil forms and collects deeper underground, the gas migrates upwards along with it. Over time, the gas tends to accumulate on top of the oil within the rock formations.
Deposits of oil and natural gas.
Asia and Africa
Saudi Arabia has deposits of oil and natural gas in its large desert region. It is one of the largest oil-producing countries in the world and has significant reserves of both oil and natural gas.
Somalia does have huge potential for oil, figures like the one you have quote have been estimated to be inside Somalia. While oil wells have been found in land somalia, the real potential lies in gas and oil discovered waiting to be found At the end of the day only God really knows what Somalia has or has not. Let's hope that the Somali's strike it huge
Anticline formations can trap oil and gas creating deposits.
North Sea
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Yes, Ukraine does have domestic deposits of oil and gas besides it has large deposits of coal methane and probably the world largest deposits of shale gas. You can get numbers from this paper ENERGY SECURITY CHALLENGES IN UKRAINE A SNAPSHOT-2010 International Centre for Policy Studies
Geologists use various methods such as seismic surveys, gravity and magnetic surveys, and drilling to discover oil and gas deposits. These techniques help geologists to interpret the subsurface geology and locate potential reservoirs where oil and gas may be trapped. Additionally, advances in technology like 3D seismic imaging have improved the accuracy of identifying and extracting oil and gas deposits.
Oil is typically found below natural gas deposits. This is because oil is denser than natural gas and tends to settle at lower depths in the Earth's crust. As a result, oil deposits are often located beneath natural gas reservoirs.