H2020Индивидуална стипендия2022–2024

GASCLAY · Formation and Vanishing of Discrete Gas Flow Pathways in Clays

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2022-03-01 → 2024-02-29
Финансиране от ЕС: 187 572 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Газовите канали в глинистите почви се проучват чрез експерименти и модели, например как се движи газ през бариери за радиоактивни отпадъци. Разбирането на този процес помага за подобряване на инженерните проекти и съхранението на въглероден диоксид под земята.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Formation and Vanishing of Discrete Gas Flow Pathways in Clays

The formation of Discrete Gas Flow Pathways (DGFP) is the mechanism whereby a gas phase penetrates a liquid-saturated clay-rich material in the form of narrow channels created by the mechanical action of the gas pressure. This complex phenomenon is significantly influenced by both small and large-scale heterogeneities within the material, leading to a partly stochastic process. DGFP occur in various natural and engineered processes, such as release of methane from ocean or lake floor sediments, stimulation of sensitive hydro-carbon reservoirs, CO2 injection and storage in subsurface reservoirs, and gas migration through clay barrier in Geological Disposal Facilities for radioactive waste. Despite its considerable environmental and economic impacts, the fundamental understanding of the formation, evolution, and dissolution of DGFP networks remains limited. The project aims to bridge this knowledge gap through an integrated approach of experimental and numerical modelling studies. A novel experimental setup has been developed to generate and visualise two-dimensional DGFP networks during gas injection tests, enabling the observation of DGFP formation and dissolution in real-time. This setup not only allows for precise control over boundary conditions but is also optimised to enable extensive parametric studies and probability distribution analyses. These features are vital for understanding the stochastic nature of DGFP formation. In parallel, a new coupled hydro-pneumo-mechanical Finite Element (FE) model has been developed to support the interpretation of experimental outcomes. The new theoretical basis, experimental setups and numerical model provide the basis for the developing of new clay-based engineered materials, to increase the feasibility of engineering projects and to improve the global warming prognosis. Consequently, the project will significantly contribute to the European knowledge-based economy and support European Climate Action initiatives.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

The formation of Discrete Gas Flow Pathways (DGFP) is the mechanism whereby a gas phase penetrates a liquid-saturated clay-rich material in the form of narrow channels created by the mechanical action of the gas pressure. It is a very complex phenomenon, which is strongly affected by small and larger scale heterogeneities in the material, resulting in a partly random process. DGFP occur in a range of natural and engineered processes (e.g. release of methane from ocean or lake floor sediments, stimulation of sensitive hydro-carbon reservoirs, CO2 injection and storage in subsurface reservoirs, and gas migration through clay barrier in Geological Disposal Facilities for radioactive waste). Despite its multiple environmental and economic implications, the formation, development and vanishing of DGFP networks are poorly understood on a fundamental level.The objective of the proposal is to close this knowledge gap through a combined experimental and numerical modelling study. For this purpose, I will develop a new experimental setup to generate and visualise two-dimensional DGFP networks during gas injection tests. By using Particle Image Velocimetry, this setup will allow to track, for the first time, the formation and vanishing of DGFP as gas is injected. In addition, the setup will be simple enough to enable extensive parametric studies and probability distribution analysis, which are essential to unravel the random nature of the problem. Finally, the experimental results will be used to develop and validate a coupled hydro-pneumo-mechanical Finite Element model.The new theoretical framework, experimental setups and numerical model will provide the basis to develop new clay-based engineered materials, to increase the feasibility of engineering projects and to improve the global warming prognosis. In that way, this project will contribute to the European knowledge-based economy and to the European Climate Action.

Оригинален текст от CORDIS (на английски).

Участници

TECHNISCHE UNIVERSITEIT DELFT · DelftКоординаторНидерландия