Petroleum due to accumulation and decay of organic compounds from plants and animals that mix with the sediment layer in the gravel each mud under the ground. After millions of years, these sediments will sink down gradually.Be crowded with pressure and high heat. As well as in the amount of oxygen is limited. Crude oil and natural gas is dissolved transition inserted between the porous rockAnd oxygen are different. Depending on the type of plant and animal origin of petroleum. The influence of sediment deposition on force
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.Petroleum made in rock are moving away the broken and porosity of rock with little more than to depth, then accumulated inside the structure, the porous rockThe top or shale sedimentary texture detail block petroleum flows through out. The structure block, this is called the petroleum reservoirs
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