The development of a new approach to the energy management system formation and the estimation of its efficiency on the basis of the Consumer Quality theory

© 2016 Portland International Conference on Management of Engineering and Technology, Inc.The energy management system, that is used in enterprises of different countries of the world, is directed to solve such tasks as to increase the energy efficiency of output and production processes, to economize energy resources in general economic activities of an enterprise. As it was stated in the process of studying of a wide range of international publications, the majority of these tasks relate to the level of operative tasks of an enterprise. However, the solution of strategic tasks in the energy management system is often limited by the development of perspective energy saving plans, which in their turn are partly or even not connected with the plans of strategic development of an enterprise. In the current research we offer the mechanism of formation of connection between the activity planning in energy management system and the strategic development of an enterprise. Such methods as Voice of Customer and House of Quality are offered to realize this mechanism. It should be noted that the given mechanism can be used most efficiently in the enterprises which seek the mutual increase of energy efficiency of the production and the energy efficiency of the final output. The mechanism that is suggested in the given research will promote the integration of aims and goals of the energy management system into the system of strategic management of an enterprise activity. The novelty of this approach lies, firstly, in the identification of a possibility to apply the instruments of the theory of productive quality (Voice of Customer and House of Quality) to solve a range of tasks that are not typical for these instruments, secondly, in the application of strategy-oriented approach to solve the tasks concerning the management of energy resources of an enterprise

Investigation of waterflooding with surfactants of ash'alchinskoye oil-field sandstones using X-ray ct

© SGEM 2017. All Rights Reserved. The study deals with the features of using surfactants during waterflooding of an oilsaturated porous medium in the pore-scale. As an example of the study, we use natural sandstone from Ash'alchinskoye oil-field. For calculations the digital image of this sample is received with high resolution X-ray computer tomography use. The mathematical modeling of multiphase flow in porous medium is made on the base of Lattice Boltzmann equations and Color-field model. Numerical experiments are held for different values of surface tension and contact angle of wetting. It was found that at very low values of the capillary pressure in comparison with the hydrodynamic drop, the viscous "fingers" are formed in the porous medium. At comparable values of capillary and hydrodynamic pressures, the surfactant solution fills the pore space uniformly and more efficiently. A volume of produced oil increases with decreasing of surface tension and wetting angle with the same volume of injected solution after its breakthrough from outlet section, but before breakthrough it was observed an opposite effect

Homogenization of titanomagnetites with magnetite–ulvospinel exsolution structures according to the thermomagnetic data: Modeling and experiment

© 2016, Pleiades Publishing, Ltd.A three-dimensional model describing the homogenization of titanomagnetites with magnetite–ulvospinel exsolution structures in the course of thermomagnetic analysis is presented. The implications of the size and shape of the exsolution structures and the initial titanomagnetite composition for the temperature dependence of saturation magnetization during repeated heating is analyzed. It is found that the dimension of the exsolution structures has the strongest effect, whereas the shape and composition only have an effect in the case of the small exsolution structures. A method is suggested for estimating the dimensions of the exsolution structures from the thermomagnetic curve. A close consistency of the results is revealed by comparing the distributions of the dimensions of the exsolution structures estimated by the electron microscopy and by the analysis of the thermomagnetic curve for the same sample

Modelling waterflooding of layered oil reservoirs at nonlinear movement law

The model of waterflooding of three-layer oil reservoir saturated with oil having non-Newtonian properties is presented. The paper deals with numerical model of oil displacement by water with the law of movement of oil from the limiting gradient shift. It is modeled a flow of non-Newtonian fluid in a porous medium in variables 'velocity - saturation'. There is a comparison with a case when a limiting gradient of oil shear is neglected. It is shown that the final oil recovery factor will be thus essentially predatory

Simulation of heat treating the oil collector using acid exposure on near-Wellbore zone

The study deals with the problem of thermal exposure on the oil reservoir using acidizing of near-wellbore zone. There is a comparison of the oil recovery factor in cases of conventional water flooding, water flooding with the injection of coolant, water flooding with acid exposure and mixed technology. The obtained results show that the joint exposure of heat and acid treatment is the most effective mode of the oil recovery

Modeling thermal treatment in combination with acid treatment of a multilayer oil reservoir

© 2015 Springer Science+Business Media New York. The problem of combined thermal and acid treatment in a multilayer crude-oil reservoir is examined for two-phase flows of fluid (water and crude oil) in a porous medium. A model in the form of a "bundle" of cylindrical capillaries of different radii is used to describe changes in the porosity and permeability of the porous medium as a result of chemical reaction between the acid and rock matrix, and the coalescence rate of the channels due to dissolution of pore walls is calculated based on the Smoluchowski equation. The recovery of crude oil in conventional flooding is compared with flooding with injection of a heat-transfer agent, and flooding using acid and the combination technology. It is shown that thermal treatment combined with acid treatment of a multilayer crude-oil formation provides the most effective oil production conditions

Evaluation of data representation

In this article the problem of statistically reliable sample size evaluation is considered. The two step procedure proposed by C. Stain allows to determine the sample size. The C. Stain's procedure was used for creating the program `The evaluation of data representation'. The program is a part of the program shell of `Servis-Base' data-base software, developed by the authors. The program was used for the evaluation of the sufficient quantity of measurings in experiments for the determination of the proteinase B.intermedius productivity

Pore-Scale Investigation of Two-Phase Flows in Three-Dimensional Digital Models of Natural Sandstones

© 2018, Pleiades Publishing, Inc. The results of numerical simulation of the processes of two-phase flow through a porous medium in three-dimensional digital models of the porous space of three natural sandstone samples are given. The calculations are carried out using the lattice Boltzmann equations and the digital field gradient model over a wide range of the capillary numbers and the viscosity ratios of injected and displaced fluids. The conditions of flow through a porous medium with capillary fingering, viscous fingering and with stable displacement front are revealed

Model for treatment of oil reservoirs with polymer-dispersed systems

© 2015 Springer Science+Business Media New York. We present a new mathematical model for oil displacement by water from formations using polymer-dispersed systems. It is based on the classical two-phase filtration model: the Buckley-Leverett model. The closing relations are obtained using pore and particle size distribution functions. The model takes into account such effects as narrowing and blocking of pore channels as polymer particles move through them, and also mass exchange processes

Investigation of the porosity and absolute permeability coefficients of carbonate reservoir using the X-ray computed microtomography

The authors describe the methodology and results of the evaluation of porosity coefficient and absolute permeability tensor for typical carbonate reservoir based on digital models of the pore structure obtained by X-ray computed microtomography, and the numerical simulation of fluid flow in the pore scale. We reveal considerable heterogeneity of the internal structure of carbonate reservoir. It is shown that the porosity of the sample is controlled by the porosity of the matrix, whereas the filtration characteristics - by cracks. On the basis of investigations showed that chosen size of the carbonate samples (cubes with size of 25 mm) for the X-ray computed microtomography may not be enough to assess their macroscopic properties