http://repositorio.ufc.br/handle/riufc/23503 2026-08-14T02:43:28Z http://repositorio.ufc.br/handle/riufc/87270 Título: Simulação da estocagem de Co2 em reservatórios de petróleo usando rochas digitais Autor(es): Soeiro, Marina Chavante Abstract: Global warming demands urgent mitigation strategies, with Carbon Capture and Storage (CCS) being a prominent one. This work aimed to investigate the behavior of carbon dioxide (CO2) in depleted oil reservoirs, utilizing computational simulation in the GeoDict software on two digital sandstone rocks. Initially, the methodology was validated with literature data, demonstrating the method's reliability in predicting petrophysical properties such as porosity and absolute permeability. The comparative analysis involved the simulation of drainage and imbibition processes, in addition to relative permeability. The characterization results revealed that sample 1 has greater porosity (22.5%) and higher absolute permeability (1.59 D) compared to sample 2 (14.4% and 0.177 D, respectively). In terms of storage security, sample 2 exhibited a significantly higher capillary entry pressure, indicating greater resistance to gas migration. The analysis of the capillary pressure curves during the drainage and imbibition processes confirmed the occurrence of hysteresis. sample 1, which has a maximum saturation 48.5% greater than sample 2, presents a higher residual trapping potential, making it more effective in long-term CO2 immobilization, while sample 2 offers greater structural containment and resistance to flow. It is concluded that simulation on digital rocks is a promising tool for optimization and security in CCS projects. Tipo: TCC 2025-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/83163 Título: Estudo comparativo das principais causas dos acidentes ligados ao petróleo no Brasil nas últimas duas décadas. Autor(es): Oliveira, Andrêsa da Silva Abstract: This study aimed to analyze the main causes of accidents in the oil sector in Brazil over the last two decades, focusing on the environmental, social and economic impacts resulting from these events. The research investigated everything from technical and operational failures to institutional and regulatory deficiencies, seeking to understand how these variables relate to the recurrence of accidents in the sector. The methodology adopted was qualitative in nature, based on documentary analysis of technical reports, academic publications and official data from regulatory agencies, which allowed the identification of patterns, weaknesses and opportunities for improvement in safety practices in oil operations. Based on this interpretative approach, it was possible to examine the organizational and political contexts that influence risk management and disaster prevention. The results showed that accidents are the result of a complex combination of human, technical and structural factors, aggravated by the weakness in the application of safety standards and the insufficiency of inspection mechanisms. It is concluded that the adoption of a systemic and integrated approach, anchored in preventive policies, safety culture, continuous training of workers and rigorous monitoring, is essential to mitigate the risks in the sector and ensure that energy development occurs in a sustainable manner, protecting lives, the environment and the national economy. Tipo: TCC 2025-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/83162 Título: Revisão bibliográfica da viabilidade da exploração do gás de xisto no Brasil Autor(es): Lima, Nonata Chaves Bastos Abstract: This study aims to analyze the economic feasibility of shale gas exploration in Brazil, considering geological, technological, economic, environmental, and regulatory aspects. The research was conducted through a literature review and comparative analysis of national and international data. The study identified that Brazil has sedimentary basins with high potential for unconventional gas production, such as the Paraná, Parnaíba, Recôncavo, Solimões, and Amazonas basins. However, exploration faces significant challenges, including high production costs, lack of adequate infrastructure, and gaps in the regulatory framework. Additionally, the environmental impacts associated with hydraulic fracturing require special attention and mitigation measures. The analysis concludes that, despite existing barriers, shale gas can represent a strategic transitional energy source, provided there is investment in technology, specific regulation, and sustainable planning. The study proposes recommendations for the responsible development of this activity in Brazil. Tipo: TCC 2025-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/78992 Título: Integração de modelo geomecânico 1D e modelo com acoplamento fluxo-geomecânico para estudo da estocagem de CO2 em um reservatório de gás depletado da Bacia do Parnaíba Autor(es): Silva, Francisco Lucas Damascena Abstract: The search for measures to reduce the effects of climate change has marked contemporary times. One of the most impactful gases is CO2, one of the main causes of the greenhouse effect. This gas comes from the combustion of automobiles, thermoelectric plants, and industries of various categories. It is directly related to the burning of fossil fuels. With this in mind, we seek ways to reduce the amount of CO2 in the atmosphere based on scientific studies. One of these methods is the sequestration and storage of this gas in an oil or gas reservoir. In this study, a 1D geomechanical model will be constructed based on well logs adapted from a gas field and mathematical correlations obtained from the literature on the subject, in addition to the creation of a flow model coupled with a 3D geomechanical model. With the 1D geomechanical model, it will be possible to describe the poroelastic behavior of the reservoir and the cap rock, that is, the behavior of the principal stresses acting on the formation and the pore pressure will be described, with the objective of calculating the maximum pressure that the reservoir can withstand so that the largest possible amount of CO2 can be stored. The flow model coupled with geomechanics will describe the behavior of the gas during storage, the cap rock that seals the gas in the reservoir, and the faults present in the reservoir. In this way, it will be possible to study issues involving the amount of injected CO2, the reservoir's behavior involving elastic properties over time, and the cap rock's response during storage. Tipo: TCC 2024-01-01T00:00:00Z