Modelling the multi-scale spatial variations in the geomechanical properties within the discontinuities of the Sherwood Sandstone Group and their infl

对舍伍德砂岩群的不连续性内地质力学特性的多尺度空间变化及其影响进行建模

• 批准号: 2754950
• 金额: --
• 依托单位: Heriot-Watt University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2754950
• 关键词: Modelling; multi; scale; spatial; variations

The aim of the research is to develop a 3D fluid flow model predicting the effect of discontinuities on hydrogen storage and recovery within different facies of the Sherwood Sandstone Group (SSG).Three research questions will be addressed:What are the key pore scale characteristics within the discontinuities of the SSG that affect the reservoir scale H2 storage properties?What are the influential fluid flow properties of the SSG that are needed to parameterise, develop, test and validate a 3D probabilistic geological model for H2 storage and recovery?How can the sensitivities of the variables and uncertainties of the model be quantified and characterised so that they can be communicated to policymakers and industry?The SSG is important to the UK as a hydrocarbon reservoir and as a significant source of groundwater. It also has potential to help with some of the imminent climate challenges by potentially acting as storage reservoir for CO2 or reservoir for the temporary storage of hydrogen, thereby supporting the energy transition and Net Zero 2050 goals by the UK government. However, discontinuities, such as deformation bands, have the potential to restrict the advantages of the SSG, potentially limiting lateral flow. Further understanding of the effect of discontinuities on storage and recovery capabilities of different facies at field scale is needed to better model reservoir capacity and its response to cyclic perturbations so that we can manage our resources effectively, avoiding potential hazards and costly and disruptive interventions, such as those created by anomalous pressure increases at Snohvit. A better comprehension of SSG properties will further our understanding of other sandstone formations and improve our ability to use geological resources globally.Potential impacts of this research are:Improved UK subsurface strategy. It will provide a scientific foundation for the UK Government regarding the extent of our resources and their geographical locations, impacting upon hydrogen transportation costs and the proximity of large industrial processes to storage sites, enabling them to create clear policy about the hydrogen network and focus resources toward building an integrated infrastructure with other technologies such as carbon capture and storage.Removal of some barriers to a hydrogen economy, one of the UK Government's three pathways towards achieving its emissions goals with recent substantial investment. Storage and effective retrieval is an essential part of this relatively immature technology.Newly identified geological domains for hydrogen storage. Currently hydrogen is stored in solution-mined caverns in halite; understanding the potential for pore space storage could allow additional geological units to be identified as potential hosts, increasing the geographical extent of potential sites in areas of projected hydrogen demand remote from suitable accumulations of bedded halite.Reduction in hydrogen storage costs. Identification of storage sites and their fluid properties will cut research and exploration costs of industry, allowing resources to be targeted at areas with maximum chance of success, and providing companies and clusters with a more realistic understanding of the costs involved.The overall effect will be to accelerate the UK industrial, domestic and transport sectors towards the Net Zero targets by reducing information and cost barriers to their implementation. This research will also be relevant to energy storage for other technologies with potential in the SSG, including aquifer thermal and compressed air storage.

该研究的目的是开发一个3D流体流动模型，预测不连续面对舍伍德砂岩群（SSG）不同相内氢储存和回收的影响。将解决三个研究问题：SSG不连续面内影响储层规模H2储存性能的关键孔隙规模特征是什么？参数化、开发、测试和验证H2储存和回收的3D概率地质模型所需的SSG有哪些有影响力的流体流动特性？如何量化和描述模型变量和不确定性的敏感性，以便将其传达给政策制定者和行业？SSG作为碳氢化合物储层和地下水的重要来源对英国很重要。它还具有帮助应对一些迫在眉睫的气候挑战的潜力，可以作为二氧化碳的储存库或临时储存氢的储存库，从而支持英国政府的能源转型和净零2050目标。然而，不连续性，如变形带，有可能限制SSG的优势，潜在地限制横向流动。需要进一步了解不连续性对油田规模不同相的储存和采收能力的影响，以更好地模拟储层容量及其对周期扰动的响应，以便我们能够有效地管理我们的资源，避免潜在的危险和昂贵的破坏性干预，例如Snohvit异常压力增加所造成的干预。更好地理解SSG特性将进一步加深我们对其他砂岩地层的理解，并提高我们在全球范围内利用地质资源的能力。它将为英国政府提供关于我们的资源范围及其地理位置的科学基础，影响氢运输成本和大型工业过程与储存地点的接近程度，使他们能够制定关于氢网络的明确政策，并将资源集中用于建设与其他技术（如碳捕获和储存）相结合的综合基础设施。经济，英国政府的三个途径之一，实现其排放目标，最近大量投资。储存和有效的回收是这项相对不成熟的技术的重要组成部分。目前，氢储存在岩盐中的溶液开采洞穴中;了解孔隙空间储存的潜力可以使更多的地质单元被确定为潜在的宿主，增加潜在地点的地理范围，这些地点位于远离层状岩盐适当积累的预计氢需求地区。确定储存地点及其流体性质将削减工业研究和勘探成本，使资源能够瞄准成功机会最大的地区，并为公司和集群提供对所涉成本的更现实的理解。总体效果将是加速英国工业，通过减少实施净零排放目标的信息和成本障碍，帮助国内和运输部门实现净零排放目标。这项研究也将与SSG中具有潜力的其他技术的能量储存有关，包括含水层热和压缩空气储存。