Oil reserves intended is what it contains earth from sources of non-renewable resource and that may be in the form of crude oil, or natural gas, or gas attendant, or liquid recovered from the gas, and vary the importance of oil reserves account from one party to another, for example, oil companies benefit from it to know the life span of her, while producing state benefiting from it in determining its economic policy, which will be followed in the process of consumption or export, while the world Vestphad him in determining the partition that will be exported from the state produced to satisfy the needs of the consuming countries. Oil reserve account oil reserve account depends on account a range of things: estimating land area that contains the oil, and is expressed as the amount of square foot unit. Determine the depth and thickness of the area containing the oil, and is expressed in value the unity of the foot. The proportion of water contained in the oil liquid, equal to the volume of water in a particular spot to the overall size of the pores that contain a liquid oil. The expense of oil the size of the oil: crude oil found in oil wells size without regard to whether this oil can be extracted or not, and without regard to whether this oil can be used or not. Total oil reserves: part of the total volume of oil but can be extracted and their production and use, and is also called the recovery coefficient. Remaining reserves: the difference between the volume of oil and the total volume of oil, as it constitutes a residual amount of oil the size of the oil. Determine the degree of porosity of the rocks that contain oil: which is equal to the size of the pores, which are filled with oil.
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