Searched for: department%3A%22Geoscience%255C%252B%2526%255C%252BEngineering%22
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Ansari, M.N. (author)
Enhance Oil Recovery (EOR) techniques are theoretically very promising but in real life suffer the effects of many physical complications in the subsurface which are yet to be understood in detail. One such complication is the detrimental effect of oil in foam in foam EOR. Current-generation reservoir simulators represent these effects in an...
master thesis 2015
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Heins, R. (author)
Enhanced oil recovery by gas injection can show excellent displacement efficiency but may suffer from poor sweep efficiency. A promising method to overcome poor sweep efficiency in gas-injection enhanced oil recovery processes is foam injection. The effect of oil saturation on foam stability is complicated and not fully understood. Complexity in...
master thesis 2015
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Danelis, S. (author)
Gas flooding is a widely used improved and enhanced oil recovery method. However, due to the low density and the high mobility of gas compared to oil and water, gravity override and fingering of gas though high-permeability zoness can occur during gas flooding reducing oil recovery. The development of foam leads to lowering the gas mobility and...
master thesis 2015
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Nell, M. (author)
Foam injection is a promising method to improve sweep efficiency for gas flooding in enhanced oil recovery (EOR). The effect of oil on foam is a complex phenomenon and for this reason three phase foam simulations have shown to be difficult in the past. Initially the objective of this simulation study was getting a better understanding of...
master thesis 2015
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Leeftink, T.N. (author), Latooij, C.A. (author), Rossen, W.R. (author)
Injectivity is a key factor in the economics of foam enhanced oil recovery (EOR) processes. Poor injectivity of low-mobility foam slows the production of oil and allows more time for gravity segregation of injected gas. The conventional Peaceman equation (1978), when applied in a large grid block, makes two substantial errors in estimating foam...
journal article 2014
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Roebroeks, J. (author)
The goal of this thesis, to assess the potential of a new silica-based nanoparticle to increase foam viscosity in a porous medium, has been achieved. A method was developed to reduce filtration effects which allowed the conduction of repeatable foam-scan experiments in a laboratory. Through conduction of multiple core-flooding experiments it has...
master thesis 2014
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Namdar Zanganeh, M. (author), Kraaijevanger, J.F.B.M. (author), Buurman, H.W. (author), Jansen, J.D. (author), Rossen, W.R. (author)
We apply adjoint-based optimization to a Surfactant-Alternating-Gas foam process using a linear foam model introducing gradual changes in gas mobility and a nonlinear foam model giving abrupt changes in gas mobility as function of oil and water saturations and surfactant concentration. For the linear foam model, the objective function is a...
journal article 2014
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Hussain, A.A.A. (author)
This thesis investigates bulk foam stability in absence of oil, and in presence of oil (hexadecane). Foam in absence of oil was produced by sparging nitrogen at a fixed flow rate through the surfactant solution. Foam in presence of oil was produced by stirring a mixture of surfactant and oil with an immersion mixer. The behavior of foam in...
master thesis 2013
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Dharma, A.S. (author)
In gas-injection enhanced oil recovery (EOR), foam is a promising method to improve sweep. We studied foam for EOR through analytical modeling and simulations in two cases: the ability of foam to prevent gravity override over large distances and the effect of oil on foam processes. Shan and Rossen (2004) present a simple model for SAG ...
master thesis 2013
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Leeftink, T.N. (author)
Simulators play a crucial role in EOR reservoir modeling. One of the big problems with the simulation of gas injection in SAG foam processes, is that foam collapse near the injection well is poorly represented in the simulator well model. This paper focusses on the question whether a simulator using the Peaceman equation for a homogeneous...
bachelor thesis 2013
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Simjoo, M. (author)
Growing worldwide oil demand increased the need of new and efficient oil recovery methods. Gas injection in oil reservoirs is deemed one of the most widely used methods to increase oil recovery. However, the full potential of gas injection is often not realized due to poor vertical and areal sweep efficiency of the gas. Foaming could be a...
doctoral thesis 2012
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De Velde Harsenhorst, R.M. (author)
In this BSc-thesis a Surfactant-Alternating-Gas (SAG) foam displacement is represented by an idealized model. Shan and Rossen show in the article ‘Optimal Injection Strategies for Foam IOR’ (2004) that this model, though greatly simplified, is a useful representation of a foam displacement in the physical world, where pressure gradient is the...
bachelor thesis 2012
Searched for: department%3A%22Geoscience%255C%252B%2526%255C%252BEngineering%22
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