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Impact of Maximum Allowable Cost on CO_2 Storage Capacity in Saline Formations

机译：最大允许成本对盐层CO_2储存能力的影响

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摘要

Injecting CO_2 into deep saline formations represents an important component of many greenhouse-gas-reduction strategies for the future. A number of authors have posed concern over the thousands of injection wells likely to be needed. However, a more important criterion than the number of wells is whether the total cost of storing the CO_2 is market-bearable. Previous studies have sought to determine the number of injection wells required to achieve a specified storage target Here an alternative methodology is presented whereby we specify a maximum allowable cost (MAC) per ton of CO_2 stored, a priori, and determine the corresponding potential operational storage capacity. The methodology takes advantage of an analytical solution for pressure buildup during CO_2 injection into a cylindrical saline formation, accounting for two-phase now, brine evaporation, and salt precipitation around the Injection well. The methodology is applied to 375 saline formations from the U.K. Continental Shelf. Parameter uncertainty is propagated using Monte Carlo simulation with 10 000 realizations for each formation. The results show that MAC affects both the magnitude and spatial distribution of potential operational storage capacity on a national scale Different storage prospects can appear more or less attractive depending on the MAC scenario considered. It is also shown that, under high well-injection rate scenarios with relatively low cost, there is adequate operational storage capacity for the equivalent of 40 years of U.K. CO_2 emissions.
机译：将CO_2注入深层盐层代表了未来许多减少温室气体排放策略的重要组成部分。许多作者对可能需要的数千个注入井提出了担忧。但是，比油井数更重要的标准是储存CO_2的总成本是否可承受市场。以前的研究试图确定达到指定存储目标所需的注入井数量。在此，提出了一种替代方法，我们可以事先确定每吨CO_2的最大允许成本（MAC），并确定相应的潜在运营存储容量。该方法利用了用于将CO_2注入圆柱形盐层中的压力积累的分析解决方案，目前已解决了两相，盐水蒸发和注入井周围盐析的问题。该方法适用于英国大陆架的375个盐水层。使用蒙特卡洛模拟传播参数不确定性，每个地层有10000个实现。结果表明，MAC影响全国范围内潜在运营存储容量的大小和空间分布，具体取决于所考虑的MAC场景，不同的存储前景可能会或多或少地具有吸引力。还表明，在高注入率和较低成本的情况下，有足够的运营存储容量，相当于40年的英国CO_2排放量。

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  • 来源
    《Environmental Science & Technology》 |2015年第22期|13510-13518|共9页
  • 作者

    Simon A. Mathias; Jon G. Gluyas; Ward H. Goldthorpe; Eric J. Mackay;

  • 作者单位

    Department of Earth Sciences, Durham University, Durham DH1 3LE, U.K.;

    Department of Earth Sciences, Durham University, Durham DH1 3LE, U.K.;

    Carbon Capture and Storage Programme, The Crown Estate, London W1S 2HX, U.K.;

    Institute of Petroleum Engineering, Heriot Watt University, Edinburgh EH14 4AS, U.K.;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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