توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱ENHANCED OIL RECOVERY USING ASP FLOODING
نویسنده(ها): ، ،
اطلاعات انتشار: اولین همایش ملی فناوری های نوین در شیمی و مهندسی شیمی، سال
تعداد صفحات: ۶
As a relatively new technology of tertiary oil recovery, alkaline\surfactant\polymer (ASP) flooding has been studied extensively in the last two decades. ASP flooding enhances oil recovery through two maJor mechanisms: increasing the viscosity of displacing solution to improve the sweep efficiency by using polymer and reducing oil– water interfacial tension (IFT) to a very low value (10–3 mN\m) to improve the pore level displacement efficiency through the synergetic effect of surfactant and alkaline.Field tests and laboratory studies have shown that ASP flooding is more efficient than any single component flooding, such as alkaline, surfactant, or polymer flooding.At present, it is a promising tertiary recovery method and is getting increasingly more attention.<\div>

۲INVESTIGATION OF ASPHALTENE DEPOSITION IN AN OILFIELD
اطلاعات انتشار: اولین همایش ملی فناوری های نوین در شیمی و مهندسی شیمی، سال
تعداد صفحات: ۶
The difficulty of producing asphalt and paraffin materials is a problem that some oilfields in the world are facing it. Many efforts and studies have been conducted in order to resolve it, but it should be noted that, the methods of removing it differ with each other from one reservoir to another reservoir and even from one well to another well in a reservoir.However, various measures should be studied by fulfilling required tests and with considering economic parameters, optimal method should be selected in order to resolve deposits and precipitations of these aterials.Today, the advanced managements of producing materials from reservoirs always consider side costs such as thermal energy needed for producing materials from these type of reservoirs. Since some of Iran's oilfields are facing this problem with different weaknesses and intensity,this study has been conducted with the aim of studying specifications of these materials, methods of resolving production problems and adopting strategies for wells of one of Iran's southern oilfields which faces this problem.<\div>

۳STATIC VERSUS DYNAMIC ASP IMBIBITION TESTS
نویسنده(ها): ،
اطلاعات انتشار: اولین همایش ملی فناوری های نوین در شیمی و مهندسی شیمی، سال
تعداد صفحات: ۶
As a relatively new technology of tertiary oil recovery, alkaline\surfactant\polymer(ASP) flooding has been studied extensively in the last two decades. ASP flooding enhances oil recovery through two maJor mechanisms: increasing the viscosity of displacing solution to improve the sweep efficiency by using polymer and reducing oil– water interfacial tension (IFT) to a very low value (�'·–r mN\m) to improve the pore level displacement efficiency through the synergetic effect of surfactant and alkaline.Field tests and laboratory studies have shown that ASP flooding is more efficient than any single component flooding, such as alkaline, surfactant or polymer flooding.At present, it is a promising tertiary recovery method and is getting increasingly more attention.<\div>

۴SIMULATION OF LARGE–SCALE HETEROGENEOUS FRACTURED BLOCKS
نویسنده(ها): ، ،
اطلاعات انتشار: سومین کنفرانس علمی مهندسی مخازن هیدروکربوری و صنایع بالادستی، سال
تعداد صفحات: ۱۲
In this paper, we perform dynamic imbibition simulations on a large scale heterogeneous fractured block. The purpose is to seek optimum conditions under which maximum oil can be recovered in large–scale extremely–heterogeneous reservoirs. In this paper, we only consider horizontal wells. However, we simulate both continuous and slug injection scenarios. Various chemical solutions are injected. These include: water, polymer, surfactant, alkali, and different combinations of them. For convenience of simulation, although this is not physically correct, alkali represents the wettability modifying agent, while the surfactant is the agent that lowers the IFT to ultra–low values. Therefore, a simulation labeled AS indicates that the injected chemical solution lowers the IFT to ultra low values as well as alters the wettability from mixed–wet to water–wet. On the other hand, a simulation labeled ASP does the above task as well as making the chemical solution viscous (polymer). The recovery curves are compared and appropriate profiles are demonstrated in order to understand the results.<\div>

۵SIMULATION OF LARGE–SCALE HOMOGENOUS FRACTURED BLOCKS
نویسنده(ها): ، ،
اطلاعات انتشار: سومین کنفرانس علمی مهندسی مخازن هیدروکربوری و صنایع بالادستی، سال
تعداد صفحات: ۱۲
In this paper we perform dynamic imbibition simulations on a large scale homogenous fractured block. The purpose is to seek optimum conditions under which the oil recovery is maximal in a larger scale model. In order to do this, we consider 7 different cases with varying relative importance of capillarity and viscous forces. The injections are all continuous. Various chemical solutions are injected. These include: water, polymer, surfactant, alkali, and different combinations of them. For convenience of simulation, even though this is not physically correct, alkali represents the wettability modifying agent, while the surfactant is the agent that lowers the IFT to ultra low values. Therefore, a simulation labeled AS indicates that the injected chemical solution lowers the IFT to ultra low values as well as alters the wettability from mixed–wet to water–wet. On the other hand, a simulation labeled ASP does the above task as well as making the chemical solution viscous (polymer). The recovery curves are compared for each case number and appropriate profiles are demonstrated in order to understand the results.<\div>

۶Impact of queuing theory and alternative process routings on machine busy time in a dynamic cellular manufacturing system
نویسنده(ها): ، ،
اطلاعات انتشار: Journal of Industrial and Systems Engineering، نهم،شماره۲(پياپي ۲۸)، Spring ۲۰۱۶، سال
تعداد صفحات: ۱۳
A new mathematical model based on the alternative process routings in presence of a queuing system in a dynamic cellular manufacturing system has been proposed in this paper.This model integrates two problems of cell formation and inter–cell layout and also an efficiency factor which is defined for minimizing the cell load variation through the maximizing the busy time for all machine types. In order to evaluate the performance of proposed model, some numerical examples are generated randomly and solved using GAMS optimization software suitable for MIP and MINLP models. The Baron solver which is capable of solving both linear and nonlinear model is implemented. Experimental results verify the applicability of proposed model in every industrial plant which implements a CMS. Moreover, based on the sensitivity analysis, the queue system has significant impact on overall system efficiency. In other words by increasing the part arrival rate the machine busy time is increased strictly.
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