Abstract: CO2 sequestration in the reservoir is an important way to ease the CO2 emission; many scholars at home and abroad are research on CO2 storage capacity. The Calculation of the CO2 storage capacity has a certain practical significance for the development of China's CO2 emission reduction targets.We have analysed the correction formula of CO2 storage in the formation and study the dissolution coefficient which were mentioned in the formula. Because the capacity of CO2 storage in the form of dissolved CO2 occupied most of total capacity. So it can not be ignored, and the calculation of this part of the capacity of CO2 storage depending on two parameters are dissolution coefficients Cws and Cos. The solubility calculation models which were developed by Zhenhao Duan and Haitao Xue were improved and the value of dissolution coefficient Cws and Cos were obtained. Then, the application of dissolution coefficients to a revised method of calculating the CO2 storage capacity under the different conditions of oil reservoirs. The determination of CO2 dissolution coefficients Cws and Cos can be used to calculate the CO2 storage capacity in the oil reservoirs more accurately. Finally, we calculated the theoretical and effective CO2 storage capcacity in a domestic Oilfield and used the results obtained to compare with the evaluation results obtained by the analogy. The result shows that the calculation method is correct and reliable.
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Received: 07 December 2009
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Corresponding Authors:
Chen Yan Fang
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