International Journal of Greenhouse Gas Control最新文献_第10页

On the design of ultra-sparse seismic surveys for monitoring subsurface CO2 storage sites using full waveform inversion 基于全波形反演的超稀疏地震勘探方法设计

IF 4.6 3区工程技术 Q2 ENERGY & FUELS

International Journal of Greenhouse Gas Control

Pub Date : 2025-07-16 DOI: 10.1016/j.ijggc.2025.104433

Xuebin Zhao, Andrew Curtis

Monitoring the dynamics of CO

_{2}

in subsurface reservoirs allows the conformance of carbon capture and storage (CCS) projects to be assessed. Full waveform inversion (FWI) of data from dense, time-lapse seismic surveys can provide high resolution images of dynamic changes. However, FWI solutions remain highly non-unique, so uncertainties must be accounted for to ensure that conformance verification is robust. Time-lapse seismic FWI is therefore expensive because, first, dense surveys are costly to acquire, and second, quantifying realistic uncertainties requires extreme computational power and memory. We first introduce a significantly less costly method to quantify Bayesian uncertainties in the maximum a posteriori (MAP – most likely) solutions of time-lapse seismic velocity changes. The method embodies strong prior information from the baseline survey to inform inversions of monitoring surveys. In contrast to comparable methods, these uncertainty estimates are shown to be of a reasonable magnitude to inform subsequent decision-making. This method also allows the quality of prospective survey designs to be assessed in terms of expected confidence in time-lapse imaging results, at reasonable computational cost. We therefore perform a time-lapse seismic survey design study to assess the quality of more economically attractive surveys. We demonstrate for the first time that even if extremely sparse acquisition geometries are deployed, potentially even involving only a single seismic source and recordings on a single fibre-optic cable, reasonable images of subsurface time-lapse velocity changes are produced, and uncertainties remain sufficiently low to enable robust decision-making.

监测地下储层中二氧化碳的动态可以评估碳捕集与封存（CCS）项目的一致性。密集时移地震勘探数据的全波形反演（FWI）可以提供高分辨率的动态变化图像。然而，FWI解决方案仍然是非唯一的，因此必须考虑不确定性，以确保一致性验证的可靠性。因此，延时地震FWI价格昂贵，因为首先，密集调查的获取成本很高，其次，量化现实的不确定性需要极高的计算能力和内存。我们首先介绍了一种成本明显较低的方法来量化时移地震速度变化的最大后验（MAP - most likely）解中的贝叶斯不确定性。该方法体现了来自基线调查的强先验信息，为监测调查的反演提供了信息。与可比方法相比，这些不确定性估计具有合理的幅度，可为后续决策提供信息。该方法还允许在合理的计算成本下，根据延时成像结果的预期置信度来评估前瞻性调查设计的质量。因此，我们进行了一项延时地震调查设计研究，以评估更具经济吸引力的调查的质量。我们首次证明，即使部署了极其稀疏的采集几何形状，甚至可能只涉及单个地震源和单个光纤电缆的记录，也可以产生合理的地下时距速度变化图像，并且不确定性仍然足够低，可以实现稳健的决策。

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引用次数: 0

3D reservoir quality estimation of the Lower Volpriehausen Unit in the Eastern German North Sea: A statistic and stochastic modelling approach 德国东部北海低Volpriehausen单元的三维储层质量估计：一种统计和随机建模方法

IF 4.6 3区工程技术 Q2 ENERGY & FUELS

International Journal of Greenhouse Gas Control

Pub Date : 2025-07-14 DOI: 10.1016/j.ijggc.2025.104435

Felix Kästner , Arne Fuhrmann, Hauke Thöle, Astrid Schlieder-Kowitz, Gesa Kuhlmann

Carbon dioxide (CO₂) storage in deeply buried sandstones can contribute to the mitigation of greenhouse gas emissions, particularly from hard-to-abate industrial sectors. Triassic sandstones of the Middle Buntsandstein Subgroup on the West Schleswig Block offer favourable conditions to act as potential storage reservoir. While previous studies focused on regional assessments of trap structures and static capacity estimations, this is the first assessment of the extent and quality of the reservoir itself. We have created a 3D model of the West Schleswig Block to assess the reservoir quality and spatial distribution of the basal sandstones of the Volpriehausen Formation, the primary reservoir of the Middle Buntsandstein Subgroup in this region, at top depths between 2121 m (P10) and 2854 m (P90). To this end, we have developed parameter models for shale content, effective porosity, and permeability to obtain regional trend maps. Our results show that the Lower Volpriehausen Unit exhibit good lateral continuity, with a median thickness of 43 m (ranging from 25 m to 85 m) and a mean porosity of 21 % (12 % - 28 %, P10-P90). Locally, low porosities are primarily caused by high shale content and diagenetic cementation. These findings indicate variable reservoir quality for formerly mapped reservoir structures on the West Schleswig Block, which has to be considered in future carbon storage exploration efforts. Our study can facilitate future developments in the screening and evaluation of potential storage sites in the German North Sea and presents a valuable resource for local CO₂ storage capacity models.

将二氧化碳储存在深埋砂岩中可以有助于减缓温室气体排放，特别是来自难以减排的工业部门的温室气体排放。西石勒苏益格区块中Buntsandstein亚群三叠系砂岩具备作为潜在储层的有利条件。以前的研究集中于圈闭结构的区域评价和静态容量的估计，而这是第一次对储层本身的范围和质量进行评价。我们创建了西石勒苏wig区块的三维模型，以评估该地区中Buntsandstein亚群的主要储层Volpriehausen组的储层质量和空间分布，其顶部深度在2121 m （P10）至2854 m （P90）之间。为此，我们建立了页岩含量、有效孔隙度和渗透率的参数模型，以获得区域趋势图。研究结果表明，下Volpriehausen单元具有良好的横向连续性，中位厚度为43 m（范围为25 ~ 85 m），平均孔隙度为21% （12% ~ 28%,p10 ~ p90）。局部低孔隙度主要由页岩含量高和成岩胶结作用所致。这些发现表明，西石勒苏益格区块以前绘制的储层结构具有不同的储层质量，这在未来的碳储量勘探工作中必须加以考虑。我们的研究可以促进德国北海潜在储存地点的筛选和评估的未来发展，并为当地二氧化碳储存容量模型提供宝贵的资源。

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引用次数: 0

Beta-Amino Carboxylate (BAC) non-aqueous physical solvents for enhanced CO2 separations in pre-combustion carbon capture, industrial CO2 capture, and biogas upgrading processes β -氨基羧酸酯（BAC）非水物理溶剂，用于增强燃烧前碳捕获，工业二氧化碳捕获和沼气升级过程中的二氧化碳分离

IF 4.6 3区工程技术 Q2 ENERGY & FUELS

International Journal of Greenhouse Gas Control

Pub Date : 2025-07-14 DOI: 10.1016/j.ijggc.2025.104432

Jeffrey T. Culp , Robert L. Thompson , Kathryn H. Smith , David Hopkinson , Nicholas Siefert

Novel beta-amino carboxylate (BAC) solvents have been synthesized and tested to efficiently capture carbon dioxide (CO₂) from process gas streams with CO₂ partial pressure intermediate between pre-combustion and post-combustion capture. The BAC solvents have molecular structures characterized by alkyl-substituted amides or esters containing a secondary amine functional group on the second carbon from the carbonyl carbon (referred to as the beta “β” carbon). The ester or amide functional group combined with optimal steric crowding around the amine nitrogen by proximate alkyl groups are tailored to modify the strength of CO₂ binding in the solvent. The solvents possess high CO₂ solubilities and high gas selectivity including good CO₂/H₂O selectivity and can be utilized for CO₂ absorption over a range of partial pressures. Due to low volatility, many of the solvents can be operated at or above ambient temperature which eliminates solvent chilling and allows regeneration using low grade waste heat. These novel solvents offer an opportunity for efficient carbon capture for a range of applications including biogas upgrading, hydrogen production, and pre-combustion carbon capture.

新型β -氨基羧酸酯（BAC）溶剂被合成并进行了测试，以有效地捕获二氧化碳（CO2）从工艺气体流中，二氧化碳分压介于燃烧前和燃烧后捕获之间。BAC溶剂的分子结构以烷基取代的酰胺或在羰基碳（称为β“β”碳）的第二个碳上含有仲胺官能团的酯为特征。酯或酰胺官能团与邻烷基胺氮周围的最佳空间拥挤相结合，以改变溶剂中CO2的结合强度。该溶剂具有高的CO2溶解度和高的气体选择性，包括良好的CO2/H2O选择性，可以在一定的分压范围内吸收CO2。由于挥发性低，许多溶剂可以在环境温度下或高于环境温度下运行，从而消除了溶剂冷却，并允许使用低品位废热进行再生。这些新型溶剂为一系列应用提供了高效碳捕获的机会，包括沼气升级、制氢和燃烧前碳捕获。

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引用次数: 0

Impacts of output-based ETS and subsidies on CCS retrofitting in China’s coal-fired power plants 基于产量的碳排放交易体系和补贴对中国燃煤电厂CCS改造的影响

IF 4.6 3区工程技术 Q2 ENERGY & FUELS

International Journal of Greenhouse Gas Control

Pub Date : 2025-07-13 DOI: 10.1016/j.ijggc.2025.104431

Changsheng Yi, Linlin Xu, Yaling Tian

Carbon capture and storage (CCS) has been considered as a pivotal technology to reduce carbon emissions in carbon-intensive industries, such as coal-fired power plants (CFPPs). Nevertheless, high investment cost and unclear policy support make the CCS deployment far from the climate mitigation goals in China. This study employs the levelized cost of electricity (LCOE) approach to evaluate the life cycle cost of electricity generation for CFPPs with CCS retrofitting, which considers not only the financial incentives (i.e., the initial investment subsidy and carbon tax subsidy), but the non-financial incentives (such as the carbon emission quota). Specifically, we design four benchmark tightening scenarios to explore the impacts of output-based emission trading system (ETS) and government subsidies on CCS retrofitting. The results are as follows: (1) The CCS retrofitting without quota trading is less attractive for CFPPs to deliver the carbon emissions reduction, in that the initial investment subsidy is not enough to stimulate the CCS retrofitting. (2) If the quota benchmark remains 754 g/kWh unchanged, the CFPPs can turn a profit from CCS retrofitting when the critical carbon tax subsidy reaches 388 CNY/t. As the quota benchmarks are tightened, the carbon tax subsidy must rise to maintain the carbon balance under the ETS. (3) When the quota benchmarks are tightened more stringently, the CFPPs can make a profit only if the quota price gets more higher.

碳捕集与封存技术（CCS）被认为是碳密集型产业（如燃煤电厂）减少碳排放的关键技术。然而，高昂的投资成本和不明确的政策支持使得CCS的部署与中国的气候减缓目标相去甚远。本研究采用电力平准化成本（LCOE）方法对cfpp进行CCS改造的全生命周期发电成本进行评估，该方法不仅考虑了财政激励（如初始投资补贴和碳税补贴），还考虑了非财政激励（如碳排放配额）。具体而言，我们设计了四种基准收紧情景，以探讨基于产出的排放交易体系（ETS）和政府补贴对CCS改造的影响。结果表明：(1)没有配额交易的CCS改造对cfp的碳减排吸引力较小，初始投资补贴不足以刺激CCS改造。(2)如果配额基准保持754 g/kWh不变，当关键碳税补贴达到388元/t时，cfp可以从CCS改造中获利。随着配额基准收紧，碳税补贴必须提高，以维持碳排放交易体系下的碳平衡。(3)当配额基准收紧更严格时，cfpp只有在配额价格更高的情况下才能盈利。

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引用次数: 0

Caprock integrity: A critical factor for carbon capture and storage in the Vienna Basin 盖层完整性：维也纳盆地碳捕获和封存的关键因素

IF 4.6 3区工程技术 Q2 ENERGY & FUELS

International Journal of Greenhouse Gas Control

Pub Date : 2025-07-12 DOI: 10.1016/j.ijggc.2025.104434

Lukas Skerbisch , David Misch , Michael Drews , Klaus Arnberger , Volker Schuller , Andras Zamolyi , Thomas Hantschel , Daniel Palmowski , Adrian Kleine

It is commonly accepted that geologic CO₂ sequestration will be needed to meet carbon emission goals and reduce the impact of anthropogenic climate change. While the feasibility of carbon capture and storage (CCS) in saline aquifers and depleted oil and gas fields is proven, the social acceptance for CO₂ injection into geological formations remains low. Most sites under development are located offshore, while onshore storage is generally perceived more critically. The long-term integrity of barrier layers in the storage complex is considered a major risk factor to be acknowledged in approval procedures. This study therefore aims at providing a comprehensive view on the CO₂ seal capacity of mudstones in the Vienna Basin, a potential target area for future onshore CCS in depleted oil and gas fields or saline aquifers. In a first step, the static capillary seal capacity was modelled based on wireline log-derived porosity vs. depth trends. Secondly, all processes potentially causing a CO₂ breakthrough into the seal were identified and their respective contributions to CO₂ leakage from a hypothetical storage complex were quantified. Lastly, a 1D reactive transport model was established to evaluate mineralogy and porosity changes in a seal layer of known composition and formation water chemistry over post-operational time spans of 1000–100,000 years. For both static and dynamic sealing scenarios it is shown that seal capacity in the Vienna Basin is high, and storage risks associated with top seal integrity are likely negligible.

人们普遍认为，为了实现碳排放目标和减少人为气候变化的影响，需要地质封存二氧化碳。虽然碳捕集与封存（CCS）在咸水含水层和枯竭油气田的可行性已得到证实，但社会对向地质地层注入二氧化碳的接受程度仍然很低。大多数正在开发的站点位于海上，而陆上存储通常被认为更为关键。储存库屏障层的长期完整性被认为是审批程序中需要承认的主要风险因素。因此，本研究旨在全面了解维也纳盆地泥岩的二氧化碳封存能力，维也纳盆地是未来在枯竭油气田或含盐含水层进行陆上CCS的潜在目标区域。首先，根据电缆测井得出的孔隙度与深度趋势，对静态毛细管密封能力进行建模。其次，确定了所有可能导致二氧化碳突破密封的过程，并量化了它们各自对二氧化碳泄漏的贡献。最后，建立了一维反应输运模型，以评估已知成分和地层水化学的封闭层在1000 - 10万年后的矿物学和孔隙度变化。对于静态和动态密封方案，维也纳盆地的密封容量都很高，与顶部密封完整性相关的存储风险可能可以忽略不计。

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引用次数: 0

A Coupled Well-Reservoir Model to Quantify CO2 Release Rates and Temperatures during Well Blowouts in Geologic Carbon Storage 地质储碳井井喷过程中CO2释放速率和温度的耦合井储模型

IF 4.6 3区工程技术 Q2 ENERGY & FUELS

International Journal of Greenhouse Gas Control

Pub Date : 2025-07-01 DOI: 10.1016/j.ijggc.2025.104373

Pramod Bhuvankar, Abdullah Cihan

Modern wells are designed for safe and efficient transport of fluids. CO₂ injection wells are managed through engineering best practice such that acute releases of fluids are exceedingly rare. However, stakeholders have interest to understand the scale and dynamics of such low probability events to better inform investment and insurance decision making. Here we present a physics-based well-reservoir model to simulate transient acute release of CO₂ from injection wells through an unconfined bore-hole. The developed well model captures supercritical–liquid–gas–solid phase transitions of CO₂ during rapid depressurization. We applied this model to study the CO₂ flow rates and well-head cooling from an onshore injection well in a deep saline aquifer. For a hypothetical well undergoing two-week long release after 1 year of injection at a rate of

0.25

MT/year, we observed up to

48000

tons of total CO₂ released. A near-triple-point temperature of −58°C was observed at the wellhead. Our simulations show the CO₂ flow rate to be sensitive to the reservoir permeability. With the developed model as a reference, we investigate various simplifications to speed up computations. The heat transfer between the well-bore and surrounding rocks is shown to have insignificant impact on the flow rate over two weeks, and is therefore be neglected in the simplified model. We use simulations to demonstrate the validity of a quasi-steady flow assumption inside the well. The proposed simplifications are shown to significantly speed up computations of acute CO₂ release.

现代油井的设计是为了安全、高效地输送流体。二氧化碳注入井通过最佳工程实践进行管理，因此流体的急性释放极为罕见。然而，利益相关者有兴趣了解这种低概率事件的规模和动态，以便更好地为投资和保险决策提供信息。在这里，我们提出了一个基于物理的井-储层模型来模拟注入井通过无侧限井眼的瞬态急性二氧化碳释放。开发的井模型捕获了快速降压过程中CO2的超临界-液-气-固相变。我们将该模型应用于研究深盐水含水层陆上注入井的二氧化碳流速和井口冷却。对于一口假设井，在以每年0.25 MT的速度注入1年后，进行了为期两周的释放，我们观察到总共释放了48000吨二氧化碳。在井口观察到- 58°C的近三点温度。模拟结果表明，CO2流速对储层渗透率非常敏感。以已建立的模型为参考，我们研究了各种简化方法以加快计算速度。井筒与围岩之间的换热对两周内的流量影响不大，因此在简化模型中可以忽略。通过模拟验证了井内准稳态流动假设的有效性。所提出的简化表明，大大加快了计算急性CO2释放。

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引用次数: 0

Toward consistent evaluation of CO2-EOR: A meta-analysis of life cycle assessments 迈向CO2-EOR的一致性评估：生命周期评估的荟萃分析

IF 4.6 3区工程技术 Q2 ENERGY & FUELS

International Journal of Greenhouse Gas Control

Pub Date : 2025-06-23 DOI: 10.1016/j.ijggc.2025.104430

Muhammad Y. Jabbar , Sean T. McCoy , Mohammad S. Masnadi , Joule A. Bergerson

Over the last two decades, extensive research on the life cycle carbon footprints of CO₂-enhanced oil recovery (EOR) has yielded a wide range of results, yet inconsistent methodologies have hindered the reliability of these evaluations for policy development. To address these methodological inconsistencies, this study conducted a systematic meta-analysis of global life cycle assessment (LCA) studies examining GHG emission factors from CO₂-EOR systems utilizing both natural and industrial sources. The research developed and implemented a standardized evaluation workflow incorporating comprehensive screening, eligibility assessment, inclusion/exclusion criteria, data validation, clustering, and harmonization of critical background parameters, particularly electricity grid emission factors. The analysis employed both economic allocation and substitution approaches to evaluate life cycle emission factors across the complete supply chain. The harmonized gate-to-gate (GtG) emission factors resulted in a range from 14 to 167 kg CO₂e/bbl, with a median of 56 kg CO₂e/bbl. Statistical analysis revealed that electricity consumption exhibited a stronger correlation with emission factors than net CO₂ utilization, emphasizing the importance of electricity sourcing in LCA evaluations. When expanding to cradle-to-grave boundaries, the choice of allocation methodology emerged as a dominant driver of LCA, with median GHG emission factors varying from +538 kg CO₂e/bbl using economic allocation to -250 kg CO₂e/bbl using substitution approaches. Additionally, the CO₂ source characteristics, the type of displaced crude oil, and the EOR process design were found to significantly influence results. This systematic assessment underscores the imperative for standardized monitoring and comprehensive reporting of venting and fugitive emissions to reduce LCA uncertainties. The findings demonstrate how methodological choices, boundary definitions, and underlying assumptions critically impact CO₂-EOR emission factor evaluations, providing guidance for enhancing the robustness of future LCAs and informing reliable policy and research recommendations.

在过去的二十年中，对二氧化碳提高采收率（EOR）生命周期碳足迹的广泛研究已经产生了广泛的结果，但不一致的方法阻碍了这些评估对政策制定的可靠性。为了解决这些方法上的不一致性，本研究对全球生命周期评估（LCA）研究进行了系统的荟萃分析，研究了利用自然和工业来源的CO2-EOR系统的温室气体排放因子。该研究开发并实施了一个标准化的评估工作流程，包括综合筛选、资格评估、纳入/排除标准、数据验证、聚类和关键背景参数（特别是电网排放因素）的协调。该分析采用经济分配和替代两种方法来评估整个供应链的生命周期排放因子。统一的门到门（GtG）排放系数范围为14 ~ 167 kg CO2e/桶，中位数为56 kg CO2e/桶。统计分析显示，电力消耗与排放因子的相关性强于净CO2利用，这强调了电力来源在LCA评价中的重要性。当扩展到从摇篮到坟墓的边界时，分配方法的选择成为LCA的主要驱动因素，温室气体排放因子中位数从使用经济分配的+538 kg CO2e/桶到使用替代方法的-250 kg CO2e/桶不等。此外，CO2源特征、驱替原油类型和EOR工艺设计对结果有显著影响。这一系统评估强调了标准化监测和全面报告排放和逸散排放的必要性，以减少LCA的不确定性。研究结果表明，方法选择、边界定义和基本假设如何对二氧化碳- eor排放因子评估产生重大影响，为增强未来lca的稳健性提供指导，并为可靠的政策和研究建议提供信息。

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引用次数: 0

Caprock complexity and storage assurance: Advanced findings on CO₂ containment in the Bunter Sandstone Formation 盖层复杂性和存储保障：Bunter砂岩组CO 2遏制的最新发现

IF 4.6 3区工程技术 Q2 ENERGY & FUELS

International Journal of Greenhouse Gas Control

Pub Date : 2025-06-20 DOI: 10.1016/j.ijggc.2025.104428

Ali Alsayah , Sean P. Rigby

The lower Triassic Bunter Sandstone Formation in the Southern North Sea is a promising site for CO₂ storage. This reservoir has a complex structure, particularly in the overlying Haisborough Group caprock, along with fractured shale interlayers, chimney like-structures and fault features. This study highlighted the importance of incorporating all of this complexity into a model of a ‘Bunter-like’ storage site.

Given the limited geological data on Bunter, four scenarios (Cases 1–4) were created to assess the impact of CO₂ storage on the integrity of a complex caprock structure. This study revealed that fracture reactivation within variegated shale interlayers differed when comparing scenarios with a multi-layered caprock or a single caprock. With a multi-layered caprock, the CO₂ plume was able to leak via the chimney region, whereas, with a single caprock, it did not. Furthermore, mineral dissolution/precipitation behaviour, particularly halite within the sub-layers of the shale interlayers, varied between the multi-layered and single caprock scenarios. Additionally, greater fault reactivation was observed in multi-layered caprocks compared to single caprock scenarios. With a multi-layered caprock, fault reactivation resulted in increased fault vertical and horizontal permeability than those observed in the single caprock scenario. The presence of a fault traversing several different layers of a multi-layer caprock led to different mineralogical behaviour than with a single caprock.

This study emphasized the critical importance of intricate feedback interactions in systems with complex seal and reservoir geologies, as these interactions are essential for governing the overall behaviour of plume migration.

北海南部的下三叠统Bunter砂岩组是一个很有前途的二氧化碳储存地点。该储层结构复杂，特别是上覆Haisborough组盖层，具有裂缝性页岩夹层、烟囱状构造和断层特征。这项研究强调了将所有这些复杂性整合到一个“类似邦特”的存储站点模型中的重要性。考虑到Bunter有限的地质数据，我们创建了四种情景（案例1-4）来评估二氧化碳封存对复杂盖层结构完整性的影响。该研究表明，与多层盖层和单层盖层相比，杂化页岩夹层内的裂缝再激活情况有所不同。在多层盖层中，CO2羽流能够通过烟囱区域泄漏，而在单层盖层中则不能。此外，矿物溶解/沉淀行为，特别是页岩夹层亚层内的岩盐，在多层盖层和单一盖层情景中有所不同。此外，与单层盖层相比，在多层盖层中观察到更大的断层再激活。在多层盖层情况下，断层再激活导致断层垂直和水平渗透率比单层盖层情况下高。断层穿过多层盖层的几个不同层的存在导致了与单一盖层不同的矿物学行为。该研究强调了在具有复杂密封和储层地质的系统中复杂反馈相互作用的重要性，因为这些相互作用对于控制羽流迁移的整体行为至关重要。

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引用次数: 0

Mechanistic assessments of wellbore integrity for geologic carbon sequestration in deep saline aquifers via bulk-CO2 injection 深部咸水层大规模注入二氧化碳地质固碳井筒完整性机理评价

IF 4.6 3区工程技术 Q2 ENERGY & FUELS

International Journal of Greenhouse Gas Control

Pub Date : 2025-06-20 DOI: 10.1016/j.ijggc.2025.104425

Andreas Michael

This paper examines wellbore integrity during bulk injection of carbon dioxide (CO₂) in deep saline aquifers, by modeling the associated stress-distribution evolutions within the three-layer casing-cement sheath-rock formation (C/CS/RF) system. A novel scheme, incorporating a total of eleven (“

10 + 1

″) failure mechanisms is used to assess each layer of the C/CS/RF system, discretely.

The magnitude of the normal-effective stresses along the C/CS and CS/RF interfaces provide a set of calibration parameters to model the stress distributions within the intermediate-CS layer via estimating “free strains” created during the cement-curing process, while the integrity of the C/CS/RF system is assessed over a 30-year period of bulk-CO₂ injection in a closed (bounded system) and an open (unbounded system) aquifer. Disking failures, along with radial and shear-cracking tendencies, predicted within the intermediate-CS layer in closed-aquifer configurations, provide potential pathways for CO₂ leakages back into the atmosphere. The three aforementioned failure tendencies remain in open-aquifer configurations also, albeit to a smaller degree.

The generated stress distributions indicate no-inner debonding tendency along the C/CS interface, with the outer-debonding limit approached at the CS/RF interface, yet not exceeded. Furthermore, no tensile failures (via longitudinal or transverse-fracture initiation) are predicted from the CS/RF interface, nor any casing failures (related to compressive/tensile and collapse/burst stress loads). Neither of these scenarios (closed or open-aquifer configurations) is expected to trigger seismic activity along pre-existing faults (PEFs) in the CO₂-injection well’s vicinity. Finally, CO₂/brine displacement is overviewed using analytical and numerical means, as an alternative approach for potentially increasing storage efficiencies without wellbore-integrity compromises.

本文通过模拟三层套管-水泥鞘层-岩石地层（C/CS/RF）系统的相关应力分布演变，研究了深层盐水含水层大量注入二氧化碳（CO2）过程中的井筒完整性。采用了一种新颖的方案，结合了总共11种（“10+1″”）失效机制，用于离散地评估C/CS/RF系统的每一层。沿着C/CS和CS/RF界面的法向有效应力的大小提供了一组校准参数，通过估计水泥固化过程中产生的“自由应变”来模拟中间CS层的应力分布，同时C/CS/RF系统的完整性是在封闭（有界系统）和开放（无界系统）含水层中进行30年的大量co2注入评估的。据预测，在封闭含水层配置的中cs层中，盘状破坏以及径向和剪切开裂趋势为二氧化碳泄漏回大气提供了潜在途径。上述三种破坏趋势在开放含水层构型中也存在，尽管程度较小。生成的应力分布表明，沿C/CS界面无内剥离趋势，在CS/RF界面处接近外剥离极限，但未超过。此外，CS/RF界面没有预测到拉伸失效（通过纵向或横向裂缝起裂），也没有预测到套管失效（与压缩/拉伸和崩溃/爆裂应力载荷有关）。这两种情况（封闭或开放含水层配置）都不会引发二氧化碳注入井附近已有断层（pef）的地震活动。最后，通过分析和数值方法对CO2/盐水驱替进行了概述，作为在不影响井筒完整性的情况下提高储气效率的替代方法。

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引用次数: 0

Title: System integration in CCUS initiatives: Current considerations in North European countries 题目：CCUS计划中的系统集成：北欧国家目前的考虑

IF 4.6 3区工程技术 Q2 ENERGY & FUELS

International Journal of Greenhouse Gas Control

Pub Date : 2025-06-19 DOI: 10.1016/j.ijggc.2025.104429

Rikke Drustrup , Ivar Lyhne , Jesper Raakjær

The deployment of carbon capture, utilization, and storage (CCUS) technologies requires extensive interactions with existing socio-technical systems across the value chain, involving various input and output flows of resources. As the number of CCUS projects grows, it is essential to examine how these interactions are managed during the development and operation phases, with a focus on systemic effects. This study reviews scientific literature and investigates CCUS initiatives in four European countries to analyze how key actors perceive and address system integration. Through coding of data from interviews with 17 representatives across the CCUS value chain, the findings reveal substantial variation in how systemic integration is considered among different actor profiles, leading to a proposed typology of four approaches to systemic effect consideration. The study outlines implications for CCUS implementation and suggests areas for future research to deepen the understanding of CCUS systemic effects. These findings are particularly relevant for stakeholders involved in integrating CCUS projects within specific contexts and systems.

碳捕获、利用和封存（CCUS）技术的部署需要与价值链上现有的社会技术系统进行广泛的互动，涉及各种资源的投入和产出流。随着CCUS项目数量的增长，检查在开发和操作阶段如何管理这些交互是必要的，重点是系统效应。本研究回顾了科学文献，并调查了四个欧洲国家的CCUS计划，以分析关键行动者如何感知和处理系统集成。通过对CCUS价值链中17位代表的访谈数据进行编码，研究结果揭示了在不同参与者档案中如何考虑系统整合的实质性差异，从而提出了四种系统效应考虑方法的类型学。该研究概述了CCUS实施的意义，并提出了未来研究的领域，以加深对CCUS系统效应的理解。这些发现对于在特定环境和系统中整合CCUS项目的利益相关者特别相关。

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引用次数: 0