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arXiv 1712.08652physics.geo-ph
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利用具有灵敏度的流量模型研究co2存储点的经济有效的监测方案

Using flow models with sensitivities to study cost efficient monitoring programs of co2 storage sites

Halvor Møll Nilsen, Stein Krogstad, Odd Andersen, Rebecca Allen, Knut-Andreas Lie

摘要:

规划CO2储存地点的一个关键部分是制定监测战略。这一战略的目的是通过避免操作问题来满足立法要求并降低操作成本。如果CCS将成为一种广泛的技术,在没有二氧化碳排放的情况下提供能源,那么具有成本效益的监测计划将是降低存储成本的关键。一个模拟框架,以前用于估计在Sleipner层9 [1]的流动参数,在这里扩展和采用,以确定如何测量的数量可以减少,而不会显着减少所获得的信息。该方法的主要部分是基于久经考验的,稳定和强大的,模拟技术与伴随的敏感性和数据挖掘技术,使用奇异值分解(SVD)。特别是,我们结合模拟框架与时间相关的(地震)测量迁移羽。我们还研究了隆升数据和重力数据如何提供互补信息。我们将这种方法应用于Sleipner项目,该项目提供了迄今为止最广泛的二氧化碳储存数据。在这项研究中,我们利用垂直平衡(VE)流模型的计算效率,在开源软件MRST-co2 lab中实现。然而,我们的方法来获得有效的监测方案并不限于VE型流模型,并在最后,我们讨论了如何使用的方法可以在全三维模拟的背景下。

英文摘要:

A key part of planning CO2 storage sites is to devise a monitoring strategy. The aim of this strategy is to fulfill the requirements of legislations and lower cost of the operation by avoiding operational problems. If CCS is going to be a widespread technology to deliver energy without CO2 emissions, cost-efficient monitoring programs will be a key to reduce the storage costs. A simulation framework, previously used to estimate flow parameters at Sleipner Layer 9 [1], is here extended and employed to identify how the number of measurements can be reduced without significantly reducing the obtained information. The main part of the methodology is based on well-proven, stable and robust, simulation technology together with adjoint-based sensitivities and data mining techniques using singular value decomposition (SVD). In particular we combine the simulation framework with time-dependent (seismic) measurements of the migrating plume. We also study how uplift data and gravitational data give complementary information. We apply this methodology to the Sleipner project, which provides the most extensive data for CO2 storage to date. For this study we utilize a vertical-equilibrium (VE) flow model for computational efficiency as implemented in the open-source software MRST-co2lab. However, our methodology for deriving efficient monitoring schemes is not restricted to VE-type flow models, and at the end, we discuss how the methodology can be used in the context of full 3D simulations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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