Enhanced Oil Recovery and in Situ Upgrading of Heavy Oil by Supercritical Water Injection

2019 ◽  
Vol 34 (1) ◽  
pp. 360-367 ◽  
Author(s):  
Qiuyang Zhao ◽  
Liejin Guo ◽  
Yechun Wang ◽  
Hui Jin ◽  
Lei Chen ◽  
...  
Fuel ◽  
2021 ◽  
Vol 285 ◽  
pp. 119216
Author(s):  
Seyedsaeed Mehrabi-Kalajahi ◽  
Mikhail A. Varfolomeev ◽  
Chengdong Yuan ◽  
Almaz L. Zinnatullin ◽  
Nikolay O. Rodionov ◽  
...  

2009 ◽  
Vol 12 (04) ◽  
pp. 508-517 ◽  
Author(s):  
Alexandre Lapene ◽  
Louis Castanier ◽  
Gerald Debenest ◽  
Michel Yves Quintard ◽  
Arjan Matheus Kamp ◽  
...  

Summary In-Situ Combustion. In-situ combustion (ISC) is an enhanced oil-recovery method. Enhanced oil recovery is broadly described as a group of techniques used to extract crude oil from the subsurface by the injection of substances not originally present in the reservoir with or without the introduction of extraneous energy (Lake 1996). During ISC, a combustion front is propagated through the reservoir by injected air. The heat generated results in higher temperatures leading to a reduction in oil viscosity and an increase of oil mobility. There are two types of ISC processes, dry and wet combustion. In the dry-combustion process, a large part of the heat generated is left unused downstream of the combustion front in the burned-out region. During the wet-injection process, water is co-injected with the air to recover some of the heat remaining behind the combustion zone. ISC is a very complex process. From a physical point of view, it is a problem coupling transport in porous media, chemistry, and thermodynamics. It has been studied for several decades, and the technique has been applied in the field since the 1950s. The complexity was not well understood earlier by ISC operators. This resulted in a high rate of project failures in the 1960s, and contributed to the misconception that ISC is a problem-prone process with low probability of success. However, ISC is an attractive oil-recovery process and capable of recovering a high percentage of oil-in-place, if the process is designed correctly and implemented in the right type of reservoir (Sarathi 1999). This paper investigates the effect of water on the reaction kinetics of a heavy oil by way of ramped temperature oxidation under various conditions. Reactions. Earlier studies about reaction kinetic were conducted by Bousaid and Ramey (1968), Weijdema (1968), Dabbous and Fulton (1974), and Thomas et al. (1979). In these experiments, temperature of a sample of crude oil and solid matrix was increased over time or kept constant. The produced gas was analyzed to determine the concentrations of outlet gases, such as carbon dioxide, carbon monoxide, and oxygen. This kind of studies shows two types of oxidation reactions, the Low-Temperature Oxidation (LTO) and the High-Temperature Oxidation (HTO) (Burger and Sahuquet 1973; Fassihi et al. 1984a; Mamora et al. 1993). In 1984, Fassihi et al. (1984b) presented an analytical method to obtain kinetics parameters. His method requires several assumptions.


2020 ◽  
Vol 194 ◽  
pp. 107456
Author(s):  
Aysylu Askarova ◽  
Aman Turakhanov ◽  
Strahinja Markovic ◽  
Evgeny Popov ◽  
Kirill Maksakov ◽  
...  

2018 ◽  
Vol 32 (2) ◽  
pp. 1685-1692 ◽  
Author(s):  
Qiuyang Zhao ◽  
Liejin Guo ◽  
Zujie Huang ◽  
Lei Chen ◽  
Hui Jin ◽  
...  

Author(s):  
Relber Bernardo Lopes

<p>A recuperação aprimorada de reservatórios de óleo pesado só ocorre mediante um método de suplementação de energia, tal como a injeção de água ou a aplicação de um procedimento térmico. Para procedimento térmicos, tradicionalmente há injeção de vapor, injeção de água quente e combustão {\it in-situ}. No entanto, os procedimento térmicos denominados não convencionais, como o aquecimento eletromagnético, formam um novo grupo de técnicas de recuperação de óleo. Neste trabalho, utilizamos simulação numérica de reservatórios para estudar um procedimento térmico não convencional usando os chamados aquecedores de poços. Consideramos um fluxo monofásico não-isotérmico bidimensional de óleo ligeiramente compressível. Para determinar a pressão e a temperatura do reservatório, empregamos o método das diferenças finitas, além de um esquema numérico totalmente implícito e um fracionamento de etapas. Os resultados mostram que a técnica de aquecimento considerada pode ser usada para melhorar a recuperação de petróleo pesado, mantendo a pressão do reservatório alta por um longo período em comparação com as outras estratégias.</p><p><strong>Palavras-chave</strong>: Método das diferenças finitas, fluxo não-isotérmico, fracionamento de etapas, simulação de reservatório, aquecedores de poços.</p><p>===========================================================================</p><p>Enhanced recovery for heavy oil reservoirs only occurs using a method of energy supplementation, like water injection or a thermal method. For thermal methods, traditionally there are steam injection, hot water injection and the {\it in-situ} combustion. However, thermal methods named non-conventional, such as electromagnetic heating, form a new group of oil recovery methods. In this work, we use numerical reservoir simulation in order to study a non-conventional thermal method using the so-called well heaters. We consider a two-dimensional non-isothermal single-phase flow of slightly compressible oil. In order to determine the pressure and temperature of the reservoir, we employ the finite differences method, a totally implicit numerical scheme, and an operator splitting. The results show that the heating technique considered can be used to enhance heavy oil recovery by maintaining the reservoir pressure high for a long period when compared to the other strategies.</p><p><strong>Key words</strong>: Finite differences method, non-isothermal flow, operator splitting, reservoir simulation, well heaters.</p>


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