An Improved History-match for Layer Spreading within the Sleipner Plume Including Thermal Propagation Effects
An Improved History-match for Layer Spreading within the Sleipner Plume Including Thermal Propagation Effects
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DOI：
10.1016/j.egypro.2017.03.1406
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发表时间：
2017-07
期刊：
影响因子：
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通讯作者：
G. Williams;Andrew Chadwick
中科院分区：
文献类型：
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作者：
G. Williams;Andrew Chadwick
Sleipner CO2储存作业自1996年以来一直在注入CO2，并使用时移地震技术对羽流的增长进行了密集监测。最顶层CO2层的详细历史匹配已被证明具有挑战性。本文总结了一系列的流动模拟研究影响CO2流动性的两个关键参数的结果：渗透率的异质性和羽流内的流体温度。通过在储层流动模型中包括高渗透率通道，实现了与所观察到的CO2分布的最佳匹配，如在地震数据上所观察到的。热模型表明，二氧化碳进入顶部砂层比周围储层温度高7 °C。由此产生的二氧化碳的密度和粘度的降低并没有显着提高地震和模拟之间的配合。
The Sleipner CO2storage operation has been injecting CO2since 1996, and the growth of the plume has been intensively monitored using time-lapse seismic techniques. Detailed history-matching of the topmost CO2layer has proven challenging. This paper summarizes results from a series of flow simulations examining two key parameters affecting CO2mobility: permeability heterogeneity and fluid temperatures within the plume. The best match to the observed distribution of CO2was achieved by including high permeability channels in the reservoir flow model, as observed on seismic data. Thermal models suggests that CO2enters the top sand layer 7 °C warmer than the ambient reservoir. The resulting reduction in the density and viscosity of CO2does not significantly improve the fit between seismic and simulation.