Some Geomechanical Aspects of Geological CO2 Sequestration
نویسنده
چکیده
Reservoir depletion and subsequent CO2 injection into the depleted geological reservoir induce stress changes that may mechanically damage top seal and wells, or trigger existing faults, creating the leakage pathways for CO2 escape from the reservoir. The role of geomechanics is to assess the mechanical impact of stress changes on seals, wells and faults. Since many hydrocarbon fields are geometrically complex and irregular, and the rock properties are spatially variable, such an assessment can be conveniently done on a numerical model of the field under study. Based on numerical analyses, recommendations can be given regarding the overall suitability of the depleted geological reservoir for CO2 disposal and safe CO2 injection.
منابع مشابه
Evaluation of Stress and Geomechanical Characteristics of a Potential Site for Co2 Geological Storage in Central Alberta, Canada
Storage of CO2 in deep geological formations has been identified as the most likely near-future option to significantly reduce industrial greenhouse gas emissions in Alberta. In order to assess the risks associated with potential leakage of the injected CO2 the factors influencing the potential loss of containment need to be evaluated. Currently, there is a lack of publicly available, high qual...
متن کاملComparison of geomechanical deformation induced by megatonne-scale CO2 storage at Sleipner, Weyburn, and In Salah.
Geological storage of CO2 that has been captured at large, point source emitters represents a key potential method for reduction of anthropogenic greenhouse gas emissions. However, this technology will only be viable if it can be guaranteed that injected CO2 will remain trapped in the subsurface for thousands of years or more. A significant issue for storage security is the geomechanical respon...
متن کاملOn the Fluid Retention Properties of Shales
The development of engineering activities involving shales such as the extraction of shale gas and shale oil, the nuclear waste geological storage and the sequestration of CO2, has led to an increasing interest toward the geomechanical behaviour of this geomaterial. In the context of such engineering applications, a deep understanding of the hydro-mechanical behaviour of shales is of primary si...
متن کاملCo2 Geological Sequestration: a Numerical Study of a Multi-compartment Reservoir in the Northern Adriatic Sea, Italy
It is widely recognized that fossil fuel power plants will continue to play an important role in the energy supply for a large number of countries in the decades to come. The implementation of suitable carbon capture and storage (CCS) technologies is an essential task to meet the objective of reducing green house gas emissions into the atmosphere and obtaining a sustainable power generation fro...
متن کاملModelling by homogenization of the long term rock dissolution and geomechanical effects
The geological storage of CO2 coming from large industrial facilities has been studied in detail for the last several years as a solution against the greenhouse effect and climate change in a number of countries. It is considered as a complementary solution together with the research for the non pollutant or/and renewable energy sources. One of the available options is the injection of the supe...
متن کامل