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Injection of crude oil-in-water emulsion in tertiary mode has been recognized as a potential method to increase oil recovery. Better understanding of emulsion flow through porous media is needed to develop practical improved oil recovery processes based on emulsion flooding mechanisms. In this study, two sets of experiments were carried out to further investigate the flow of emulsion in consolidated...
We present a compression algorithm to accelerate the solution of source reconstruction problems that are formulated with integral equations and defined on arbitrary three-dimensional surfaces. This compression technique benefits from the adaptive cross approximation (ACA) algorithm in the first step. A further error-controllable recompression is applied after the ACA. The numerical results illustrate...
We present an algebraic compression technique to accelerate the computation of multiple monostatic radar cross sections of arbitrary 3-D geometries. The method uses adaptive cross approximation, followed by a recompression technique to reduce the CPU time and the memory consumption. Each scattering problem due to a single excitation is solved with the multilevel fast multipole algorithm. The numerical...
Fast and accurate solutions of low-frequency electromagnetics problems are obtained with an iterative solver based on hierarchical matrices. Iterative solvers require matrix-vector multiplications (MVMs). The results show significant reductions both in CPU time and memory consumption compared to the O(N2) complexity of ordinary matrix filling and MVM.
Chemical enhanced oil recovery projects occasionally introduce an alkali agent to meet design requirements. The alkali agent reacts with reservoir rock components upon injection in reservoirs. It has been reported that the interaction of the injected alkali with some minerals in the rock assemblage, particularly anhydrite, is responsible for the very large alkali consumption, formation of secondary...
Alkali–surfactant–polymer (ASP), surfactant–polymer (SP) and alkali–polymer (AP) flooding have been recognized as potentially effective Chemical Enhanced Oil Recovery (EOR) techniques. The alkali in ASP or AP flooding blends interacts with formation minerals, markedly with anhydrite in the case of eolian deposits. As a result, water chemistry after the injection of an engineered chemical blend is...
Enhanced-oil recovery by means of chemical methods such as alkali–surfactant–polymer (ASP), surfactant–polymer (SP) and also alkali-polymer (AP) flooding have been reported as an effective strategy to increase oil recovery. Despite promising results of ASP floods in numerous formations, ASP projects can be plagued with severe scale formation and injectivity losses during the flooding period. Our current...
Injection of alkaline solutions in reservoir leads to mineral dissolution and precipitation, possibly resulting in changes in permeability and porosity, and consequently altering solution pH. Accurate prediction of pH, alkali consumption and aqueous chemistry changes are required to design suitable chemical blends in alkaline-polymer (AP) or alkaline-surfactant-polymer (ASP) flooding. Excessive consumption...
In this paper, after reviewing the basic structure for implementing WSN in smart grid, we would give a case study for implementation of such a structure in a smart home. It will be shown that using new generation cellular network structure, gives a basic improvement the infrastructure needed for gathering the information and taking a real time monitoring and control of a simplified model of a smart...
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