توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Investigation of CO2 Solubility in M.i.S Oilfield Dead Oil Viscosity By using PVT Cell and Pulse Viscometer
نویسنده(ها): ،
اطلاعات انتشار: هفتمین همایش ملی دانشجویی مهندسی شیمی، سال
تعداد صفحات: ۱۰
Viscosity is a vital parameter in petroleum engineering calculations. Its measurement is sometimes time consuming and not reliable especially in gas injection process. In this project by using PVT cell, pulse viscometer and ECLIPSE TM software viscosity of crude oil will be determined during co 2 swelling test. Therefore at the end of project viscosity change by co2 content of crude oil will be provided for using in other projects.<\div>

۲Thermodynamically Investigation of MiS Oilfield in South of Iran
نویسنده(ها): ،
اطلاعات انتشار: هفتمین همایش ملی دانشجویی مهندسی شیمی، سال
تعداد صفحات: ۹
The goal of this study is presents the research data on the influence of the adiabatic and the Joule Thomson effects and the heat of fluid degassing on the temperature field in the porous medium of South Iran Oilfields. To calculate the formation of the temperature field with due account taken of the above effects one has to know thermodynamic coefficient for actual formation fluids. With this aim in view, an experimental installation was developed based on the PVT Cell and analysis of data is done through using Eclipse TM to determine the coefficients of the JouleThomson and the adiabatic effects, as well as to obtain the specific heat of oil degassing. The thermodynamic coefficients thus obtained are used for investigating a nonstationary temperature field in the porous medium for various conditions of pressure gradient and the content of gas dissolved in the fluid.<\div>

۳NEW PREDICTION MODEL FOR NATURAL GAS VISCOSITY AT HIGH PRESSURES AND TEMPERATURES
نویسنده(ها): ، ،
اطلاعات انتشار: دوازدهمین کنگره ملی مهندسی شیمی ایران، سال
تعداد صفحات: ۱۲
Viscosities estimation of naturally occurring petroleum gases provides the information needed to accurately work out with petroleum engineering problems . Existing models for viscosity prediction are limited by data , especially at the extremely high pressures encountered in high temperature . This study shows that current methods which predict viscosities of natural gases by using the correlations are about 15% overestimated than the corresponding measuring at high pressures and temperatures , so need for accurate gas viscosity prediction will be arose . Also available commercial gas viscosity measuring devices do not give reliable and repeatable results . The National Institute of Science and Technology (NIST) is a useful source of properties of pure gases at high pressures and high temperatures ; these can be used in statistical analysis procedures to extend the current correlations . Experimental validation for naturally occurring petroleum mixtures is required too .<\div>

۴Carbon Dioxide Modeling in Underbalance Drilling as a Supercritical Drilling Fluid
اطلاعات انتشار: اولین کنگره ملی صنعت حفاری ایران، سال
تعداد صفحات: ۱۵
Mechanistic modeling of an underbalanced drilling operation using carbon dioxide has been developed in this study. The use of carbon dioxide in an underbalanced drilling operation eliminates some of the operational difficulties that arise with gaseous drilling fluids, such as generating enough torque to run a downhole motor. The unique properties of carbon dioxide, both inside the drill pipe and in the annulus are shown in terms of optimizing the drilling operation by achieving a low bottomhole pressure window. Typically carbon dioxide becomes supercritical inside the drill pipe at this high density; it will generate enough torque to run a downhole motor. As the fluid exits the drill bit it will vaporize and become a gas, hence achieving the required low density that may be required for underbalanced drilling. The latest carbon dioxide equation of state to calculate the required thermodynamic fluid properties is used. In addition, a heat transfer model taking into account varying properties of both pressure and temperature has been developed. A marching algorithm procedure is developed to calculate the circulating fluid pressure and temperature, taking into account the varying parameters. Both single phase carbon dioxide and a mixture of carbon dioxide and water have been studied to show the effect of produced water on corrosion rates. The model also is capable of handling different drill pipe and annular geometries<\div>

۵Investigation of Using CO2 as Supercritical Drilling Fluid in Jet–assisted Mechanical Drilling
اطلاعات انتشار: دومین کنگره مهندسی نفت ایران، سال
تعداد صفحات: ۱۴
In Coiled Tubing Drilling (CTD) rate of penetration could be increased by providing high pressure fluid jets, however, effective jet erosion drilling requires pressures of at least 14500 psia. Carbon dioxide exists as a supercritical fluid with a density near the water and evident low viscosity at under the pressure and temperature conditions in oil and gas well CTD. These properties can enhance jet erosion and reduce dynamic confinement loads during drilling in a pressurized borehole. Jet–assisted erosion experiments carried out with CO2 and water inside a pressurized vessel, show that CO2 provides much faster cutting of shale and granite and the threshold pressure for jet erosion with CO2 is significantly lower and drilling rate is also much faster when CO2 is used. It can provide fast penetration at low bit–weight and torque and also low cost small–diameter coiled tubing in short–radius lateral drainage wells. A model of CO2 circulation through a CTD system shows that a choke manifold will provide complete control over formation pressures and cuttings transport should be superior to that of water.<\div>

۶Production Performance Optimization
نویسنده(ها): ، ،
اطلاعات انتشار: دومین کنگره مهندسی نفت ایران، سال
تعداد صفحات: ۱۰
This study describes a fractured carbonate reservoir case study of Asmari Formation in Southern Iranian Fields. The aim of the study is to develop a fluid and a reservoir model that can explain the production mechanism and reproduce unique field characteristics. The proposed model is then used to explore the potential for enhanced oil recovery. The reservoir fluid is volatile oil with bubble point close to initial reservoir pressure. Due to the volatile nature of the reservoir fluid, extensive fluid properties processing was done and a most representative fluid model was generated. A single well reservoir model was developed and compositional simulation was carried out using the generated fluid model. History matching methods were used to adjust reservoir parameters to obtain a match with the field data. The model was able to reproduce most of the observed field characteristics. A volatile oil material balance was applied to calculate the recoveries. The model was then used in exploring various enhanced recovery methods using CO2, flue gas and methane injection. Only CO2 injection appears feasible<\div>
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