Microanalysis of natural and engineered CO2 mineralisation at CarbFix2 site, Iceland
冰岛 CarbFix2 站点天然和工程二氧化碳矿化的微量分析
基本信息
- 批准号:2425483
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:英国
- 项目类别:Studentship
- 财政年份:2020
- 资助国家:英国
- 起止时间:2020 至 无数据
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
CO2 capture and storage (CCS) is the only industrial scale technology that can directly reduce the CO2 emissions produced by the combustion of fossil fuels or industrial process emissions. Given global reliance on fossil fuels for energy and industrial manufacturing needs, CCS is an essential technology for the global drive to reach net zero CO2 emissions to the atmosphere4. The success of geologic CO2 storage critically depends on the long-term security of the storage site. Buoyant gas phase CO2 stored in sedimentary reservoirs requires long duration monitoring of storage. Alternatively, secure storage can be guaranteed through the permanent conversion of injected CO2 into new carbonate minerals within the storage site.Several tests of the sequestration that occurs when CO2 is injected into reactive basalts have recently been undertaken, notably the CarbFix1 project, located at the Hellisheidi geothermal field in Iceland[1]. Measurements of dissolved inorganic carbon and tracers injected with the CO2 indicate that mineralisation of >95 % of the injected CO2 (175 tonnes) was achieved within two years1. However, feasibility of the method at an industrial scale is still uncertain, as the key question of how long viable injectivity can be maintained is unknown. To address this question, the CarbFix2 experiment was launched in 2014, and currently 10,000 tonnes of CO2 and 5,000 tonnes of H2S are being injected per year into the geothermal field[2]Key research questions:-Identify where natural CO2 mineralisation has occurred in the field prior to injection based on observations made during drilling and tracer tests by Reykjavik Energy.-Resolve the conditions under which natural CO2 precipitation took place during growth of individual crystals using world-class microbeam analysis and geochemical modelling.-Establish baseline geochemical fingerprints prior to engineered injection of CO2 and H2S-Identify isotopic signatures of CarbFix1 carbonates from downhole samples.-Undertake field visit to surface exposures of natural analogues. Well-studied Jurassic ophiolite complexes in Liguria (Italy) host ophicalcites of carbonate mineralised ocean floor, which provide spatial information and constraints on the preservation of mineralisation pathways and geochemical fingerprints over time.-Reproduce the mineralization process on downhole cutting samples experimentally and image it with synchrotron-based X-ray microtomograph. From these experiments, dissolution and re-precipitation of minerals will be mapped and quantified.-4D microtomography experiments, varying temperature and salinity, will assess if CO2 mineralisation can be enhanced through purposeful injection strategies into hotter or colder parts of the reservoir with changed brine salinity.Methodology and timetable:This project will utilise the world-class ion microprobe (SIMS) instruments within the School of GeoSciences (Cameca 1270 and new Cameca IMS 7f-geo). You will make micro-analytical traverses across individual crystals from borehole cuttings and from mineralised basalt core samples. The micrometre growth zones within each crystal, like the rings on a tree, record the isotope and trace element signatures of porewater during the crystal growth. The growth duration, temperature, CO2 and water origins of natural carbonates will be reconstructed.These analyses will be complemented by mineralisation experiments in a novel x-ray transparent reaction cell that allows monitoring fluid-rock interaction with time-resolved synchrotron x-ray microtomography. These will use downhole cuttings samples to directly map and quantify dissolution and re-precipitation of minerals at reservoir conditions[3]. The knowledge generated will be used to ascertain how CO2 mineralisation can be enhanced through varied injection strategies and inform how to accurately incorporate such controls into predictive models of CO2 mineralisation in this reservoir.
二氧化碳捕获和封存(CCS)是唯一可以直接减少化石燃料燃烧或工业过程排放所产生的二氧化碳排放的工业规模技术。考虑到全球对化石燃料的能源和工业制造需求的依赖,CCS是全球实现大气二氧化碳净零排放的关键技术4。二氧化碳地质封存的成功关键取决于封存地点的长期安全。储存在沉积储层中的浮力气相CO2需要长时间的储存监测。另外,通过将注入的CO2永久转化为新的碳酸盐矿物,可以保证安全的储存。最近进行了几项将CO2注入反应性玄武岩时发生的封存测试,特别是位于冰岛Hellisheidi地热田的CarbFix 1项目[1]。对随二氧化碳注入的溶解无机碳和示踪剂的测量表明,注入的二氧化碳(175吨)的矿化度> 95%是在两年内实现的。然而,该方法在工业规模上的可行性仍然是不确定的,因为可以保持多长时间的可行注入性的关键问题是未知的。为了解决这个问题,CarbFix 2实验于2014年启动,目前每年向地热田注入10,000吨CO2和5,000吨H2S [2]关键研究问题:-根据雷克雅未克能源公司在钻井和示踪剂测试期间进行的观察,确定天然CO2矿化发生在注入之前的区域。使用世界一流的微束分析和地球化学建模,解决单个晶体生长过程中发生自然CO2沉淀的条件。在设计注入CO2和H2S之前建立基线地球化学指纹-从井下样品中识别CarbFix 1碳酸盐的同位素特征。对天然类似物的表面暴露进行实地考察。在利古里亚(意大利)经过充分研究的侏罗纪蛇绿岩杂岩中,含有碳酸盐矿化海底的蛇绿岩,这些蛇绿岩为矿化途径和地球化学指纹的保存提供了空间信息和限制。在井下岩屑样品上实验再现矿化过程,并用同步辐射X射线显微摄影机成像。通过这些实验,矿物的溶解和再沉淀将被绘制和量化。4D显微层析成像实验,改变温度和盐度,将评估是否可以通过有目的的注入策略,以提高CO2矿化到更热或更冷的部分与改变盐水盐度的水库。方法和时间表:该项目将利用世界一流的离子微探针(西姆斯)仪器在地球科学学院(Cameca 1270和新Cameca IMS 7 f-geo)。您将对钻孔岩屑和矿化玄武岩岩心样品中的单个晶体进行微观分析。每个晶体内的微米级生长区,就像树上的年轮,记录了晶体生长过程中孔隙水的同位素和微量元素特征。将重建天然碳酸盐的生长时间、温度、CO2和水的来源。这些分析将通过在新型X射线透明反应池中进行的矿化实验来补充,该反应池允许使用时间分辨同步加速器X射线显微断层扫描来监测流体-岩石相互作用。这些将使用井下岩屑样品直接绘制和量化在储层条件下矿物的溶解和再沉淀[3]。所产生的知识将用于确定如何通过不同的注入策略增强CO2矿化,并告知如何将这些控制准确地纳入该储层中CO2矿化的预测模型。
项目成果
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其他文献
吉治仁志 他: "トランスジェニックマウスによるTIMP-1の線維化促進機序"最新医学. 55. 1781-1787 (2000)
Hitoshi Yoshiji 等:“转基因小鼠中 TIMP-1 的促纤维化机制”现代医学 55. 1781-1787 (2000)。
- DOI:
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LiDAR Implementations for Autonomous Vehicle Applications
- DOI:
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2021 - 期刊:
- 影响因子:0
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吉治仁志 他: "イラスト医学&サイエンスシリーズ血管の分子医学"羊土社(渋谷正史編). 125 (2000)
Hitoshi Yoshiji 等人:“血管医学与科学系列分子医学图解”Yodosha(涉谷正志编辑)125(2000)。
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Effect of manidipine hydrochloride,a calcium antagonist,on isoproterenol-induced left ventricular hypertrophy: "Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,K.,Teragaki,M.,Iwao,H.and Yoshikawa,J." Jpn Circ J. 62(1). 47-52 (1998)
钙拮抗剂盐酸马尼地平对异丙肾上腺素引起的左心室肥厚的影响:“Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,
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