Important Information On Oil Shale Endowed States In Nigeria

Nigeria is the highest producing country in Africa when it comes to crude oil and one of the highest producing countries in the world, and not only is She blessed richly with this deposit, she has also been blessed with oil-producing minerals in large quantity which includes tar sands and oil shale.

Nigeria has an oil shale deposit of high economic value and this is found in Imo (Okigwe) and Abia State, other Africa countries with oil shale reserves include South Africa, Egypt, and Madagascar.

Oil Shales mineral resources in Nigeria

 

Just like tar sand that has a significant amount of oil-rich bitumen, oil shale also has a quiet amount of oil that can be used to produce various grades of petroleum products.

Oil shale is a kerogen-rich sedimentary rock; Kerogen is a rock fraction that gets broken down when heated, releases hydrocarbons (substances made entirely of hydrogen and carbon), and is the major constituent in an oil or natural gas making the oil shale an oil-producing rock.

This sedimentary rock (oil shale) is composed of an inorganic matrix, bitumens, and kerogen and is formed by the accumulation of decay matters beneath the earth's surface and within bodies of water.

While oil shale is referred to as the oil trapped in the shale, Shale gas is also referred to as natural gas that is trapped within the shale formations.

For the extraction of oil from oil shale, the solid hydrocarbons which are present in the rock must be converted to a liquid form, so that they can be pumped.

This is achieved by using a heating process called retort, where the rock is subjected to a relatively high temperature to separate the liquid and make it easier for collection.

The oil shale reserve in Nigeria, Western Africa remains untapped because of the large deposit of the conventional oil wells (crude oil), and unlike crude oil that used the process of fractional distillation, oil from oil shale can be gotten by the process of hydraulic fracturing.

Uses of oil shale

•  The resultant oil can be used as a substitute for petroleum or natural gas.

•  The shale is used as an additive in cement and art clay products when processed.



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