Evolutionary Optimisation for CO2 Storage Design Using Upscaled Models: Application on a Proximal Area of the Forties Fan System in the UK Central North Sea
Evolutionary Optimisation for CO2 Storage Design Using Upscaled Models: Application on a Proximal Area of the Forties Fan System in the UK Central North Sea
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使用放大模型的二氧化碳储存设计的进化优化:在英国北海中部四十年代风扇系统近区的应用
DOI:
10.1016/j.egypro.2014.11.567
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Babaei M
中科院分区:
文献类型:
--
作者:
Babaei M
Optimisation of injection rates is an important design consideration for meeting operational objectives and ensuring long term geological storage of CO2in saline aquifers. The optimal design should also take into account the uncertainties associated with the subsurface (e.g., petrophysical attribution and structural relationships). Detailed geological models along with different realisations for handling uncertainties increase the computational overheads, making the optimisation problem intractable. To circumvent this problem, upscaled models can be used to speed up the identification of optimal solutions. Nevertheless, a grid resolution, which does not compromise the accuracy of the optimisation in an upscaled model, must be carefully determined. The methodology described in this paper aims to address this requirement. In this study, a 3D geological model, comprising the main oil reservoirs of the Forties and Nelson hydrocarbon fields and the adjacent saline aquifer, was built to examine the use of coarse grid resolutions to design an optimal CO2storage solution for this area within the UK Central North Sea. Simulation results for single objective optimisation show that an upscaled grid resolution can be identified which is a trade-off between accuracy and computational time. The outlined methodology is generic in nature and can be ported to other similar optimisation problems for CO2storage.
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