UKCCSRC Call 1 project poster: Fault Seal Controls on Aquifer CO2 Storage Capacity, CSLF Call project poster reception, London, 27.06.16

This poster on the UKCCSRC Call 1 project Fault Seal Controls on Aquifer CO2 Storage Capacity was presented at the CSLF Call project poster reception, London, 27.06.16. Grant number: UKCCSRC-C1-14. Structural traps for storage of supercritical CO2 will commonly rely on a component of fault seal. Faults are among the most important natural potential migration pathways for buoyant fluids stored in reservoir rocks. Failure of storage integrity may occur either by mechanical failure or by flow across faults due to geometric juxtaposition of the reservoir against similarly permeable rocks and/or lack of a low permeability fault gouge. This project aimed to reduce uncertainty relating to the sealing capacity of faults affecting prospective North Sea saline aquifers, by: • Studying the controls on fault seal capability in naturally-occurring fault-bound CO2 accumulations (Fizzy and Oak), • Assessing the geomechanical stability of faults affecting an important saline aquifer offshore UK (Captain Sandstone), • Investigating the characteristics of apparently hydraulically-conductive faults in the North Sea (Netherlands).

本海报关于英国碳捕获与封存研究协会（UKCCSRC）第一轮项目“含水层二氧化碳储存的断层密封控制”在伦敦CSLF项目海报招待会上展出，时间为2016年6月27日。项目资助编号：UKCCSRC-C1-14。对于超临界二氧化碳的储存，结构陷阱通常依赖于断层密封的某个组成部分。断层是储存在储层岩石中的浮力流体最重要的自然潜在迁移路径之一。储存完整性的失效可能由于机械故障，或由于储层与类似渗透性的岩石的几何位置关系导致的断层流动，以及低渗透性断层糜棱岩的缺乏。本项目的目标是减少影响潜在北海咸水含水层的断层密封能力的不确定性，具体措施包括：
• 研究自然发生的断层封闭二氧化碳聚集（Fizzy和Oak）的密封能力控制因素，
• 评估影响英国近海重要咸水含水层（Captain Sandstone）的断层的地质力学稳定性，
• 研究北海（荷兰）中明显具有水力导电性的断层的特征。