Fariborz Rashidi
Department of Chemical Engineering, Amirkabir University of Technology, Tehran,, I.R. IRAN
[ 1 ] - Pseudo Steady State Gas Flow in Tight Reservoir under Dual Mechanism Flow
Gas reservoirs with low permeability (k<0.1 mD) are among the unconventional reservoirs and are commonly termed as "Tight Gas Reservoirs". In conventional gas reservoirs that have high permeability, the flow of gas is basically controlled by the reservoir permeability and it is calculated using the Darcy equation. In these reservoirs, gas flow due to gas diffusion is ignored compared to Dar...
[ 2 ] - Effect of Elasticity Parameter on Viscoelastic Fluid in Pipe Flow Using Extended Pom-Pom Model
In this study prediction of the steady-state flow of branched polymer melts in pipe geometry with finite volume method is presented. Our analysis in this study revealed that;for normal-stress tqq , the XPP model can predict this tensor unlike the other viscoelastic models such as PTT or Gieskus which can not predict tqq...
[ 3 ] - Modeling of Unsteady-State Cake Formation on a Fracture in Produced Water Re-Injection Process (PWRI)
In petroleum production, Produced Water Re-Injection (PWRI) has earned much interest among disposal methods of the produced water. However, presence of the contaminants in the produced waters usually results in formation damage in well bores and their surrounding fracture systems. In the present study, modeling of external cake formation on a fracture in unsteady-state conditions i...
[ 4 ] - Sensitivity Analysis of Cumulative Oil Production and Production Rate on Block Heights and Capillary Continuity for an Iranian Carbonated Fractured Reservoir
Block heights and capillary continuity between matrix blocks play paramount role in the sensitivity analysis and therefore the history matching of cumulative oil production and production rate of carbonated fractured reservoirs. In this study, the influence of these parameters upon cumulative production and recovery factor of an Iranian fractured reservoir were studied by the usage of a sim...
[ 5 ] - Forced Convection Heat Transfer of Giesekus Viscoelastic Fluid in Concentric Annulus with both Cylinders Rotation
A theoretical solution is presented for the forced convection heat transfer of a viscoelastic fluid obeying the Giesekus constitutive equation in a concentric annulus under steady state, laminar, and purely tangential flow. A relative rotational motion exists between the inner and the outer cylinders, which induces the flow. A constant temperature was set in both cylinders, in this study. The f...
[ 6 ] - Prediction of Bubble Point Pressure & Asphaltene Onset Pressure During CO2 Injection Using ANN & ANFIS Models
Although CO2 injection is one of the most common methods in enhanced oil recovery, it could alter fluid properties of oil and cause some problems such as asphaltene precipitation. The maximum amount of asphaltene precipitation occurs near the fluid pressure and concentration saturation. According to the description of asphaltene deposition onset, the bubble point pressure has a very special imp...
[ 7 ] - طراحی بهینه لختهگیر دو فاز میدان پارس جنوبی
در بسیاری از مخازن گازی، از جمله مخزن عظیم پارس جنوبی، که در دسته مخازن گاز- گاز مایع قرار میگیرند، بسیاری از تجهیزات سطحی تولید گاز، گاز را بههمراه میعانات هیدروکربنها و آب دریافت میکنند. میعانات سبب ایجاد لختهها در خطوط لوله میشوند. لختهها که تودهای از مایع هستند در خطوط لوله جریان چند فازی بسیار مشکلساز میشوند. برای جداسازی میعانات از لختهگیرها استفاده میشود. لختهگیر ابزاری ضرور...
[ 8 ] - بررسـی عملـکرد اسکـرابر دینـامیـکی جدید در حـذف دیاکسیدگوگرد
گاز SO2 بهعنوان یکی از آلایندههای زیست محیطی در ترکیب گاز خروجی صنایع مختلف مانند صنایع چوب و کاغذ، ذوب فلزات، پتروشیمی و پالایشگاهها وجود دارد و امروزه کشورها قوانین سخت گیرانهای را برای حد مجاز این ماده در گاز خروجی صنایع، وضع کردهاند. مطالعه حاضر با هدف بررسی عملکرد اسکرابر دینامیکی جدید در حذف آلاینده گازی SO2، بهوسیله یک جاذب با قابلیت بازیابی حلال (محلول بافر فسفات سدیم) میباشد. در...
[ 9 ] - Single Step and Non-Catalytic Process for Formaldehyde Production from Methane using Microchannel Reactor: Theoretical Analysis
Conventionally, methane is reformed into syngas, and subsequently converted into C1-oxygenates (methanol and formaldehyde). A novel option is the catalyst-free single-step conversion of methane to C1-oxygenates. This study presents a comprehensive model of methane partial oxidation to formaldehyde as an intermediate chemical species in methane oxidation process using microreactor. The dependenc...
[ 10 ] - مدلسازی فرایند تبدیل مستقیم و بدون کاتالیست متان به فرمالدهید با استفاده از ریزراکتورها
فناوری مرسوم برای تبدیل متان به فرمالدهید شامل سه مرحله هزینهبر، شلوغ و پیچیده تبدیل متان به گاز سنتز، تبدیل گاز سنتز به متانول و درنهایت اکسایش متانول به فرمالدهید است. این فناوری دستخوش نیاز شدید به کاتالیست و مرحله حد واسط پرهزینه و انرژی بر تولید گاز سنتز است و پیادهسازی واحدهای عملیاتی آن نیز تنها در مقیاسهای بزرگ گاز طبیعی توجیه اقتصادی دارد. درحالی که تعداد زیادی منابع گاز طبیعی با ظر...
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