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| 1 | A novel correlation approach for prediction of natural gas compressibility factor显示文摘Gas compressibility factor (z-Factor) is one of the most important parameters in upstream and downstream calculations of petroleum industries.The importance of z-Factor cannot be overemphasized in oil and gas engineering calculations.The experimental measurements,Equations of State (EoS) and empirical correlations are the most common sources of z-Factor calculations.There are more than twenty correlations available with two variables for calculating the z-Factor from fitting in an EoS or just through fitting techniques.However,these correlations are too complex,which require initial value and more complicated and longer computations or have magnitude error.The purpose of this study is to develop a new accurate correlation to rapidly estimate z-Factor.Result of this correlation is compared with large scale of database and experimental data also.Proposed correlation has 1.660 of Absolute Percent Relative Error (EABS) versus Standing and Katz chart and has also 3.221 of EABS versus experimental data.The output of this correlation can be directly assumed or be used as an initial value of other implicit correlations.This correlation is valid for gas coefficient of isothermal compressibility (cg) calculations also. | Ehsan Heidaryan Amir Salarabadi Jamshid Moghadasi | 2010 | Journal of Natural Gas Chemistry2010，19，2： | 13 |
| 2 | Survey on synchrophasor data quality and cybersecurity challenges, and evaluation of their interdependencies显示文摘Synchrophasor devices guarantee situation awareness for real-time monitoring and operational visibility of smart grid. With their widespread implementation,significant challenges have emerged, especially in communication, data quality and cybersecurity. The existing literature treats these challenges as separate problems,when in reality, they have a complex interplay. This paper conducts a comprehensive review of quality and cybersecurity challenges for synchrophasors, and identifies the interdependencies between them. It also summarizes different methods used to evaluate the dependency and surveys how quality checking methods can be used to detect potential cyberattacks. | Aditya SUNDARARAJAN Tanwir KHAN Amir MOGHADASI Arif I.SARWAT | 2019 | Journal of Modern Power Systems and Clean Energy2019，7，3： | 12 |
| 3 | A new high performance gas hydrate inhibitor显示文摘In petroleum exploration and production operations,gas hydrates pose serious flow assurance,economic and safety concerns.Thermodynamic inhibitors are widely used to reduce the risks associated with gas hydrate formation.In the present study,systematic laboratory work was undertaken to determine synergistic effects between methanol and a Poly Vinyl Methyl Ether as Low Dosage Hydrate Inhibitors(LDHIs).A valuable effect was discovered at a certain ratio of methanol to the low dosage hydrate inhibitor. | Ehsan Heidaryan Amir Salarabadi Jamshid Moghadasi Alireza Dourbash | 2010 | Journal of Natural Gas Chemistry2010，19，3： | 7 |
| 4 | A new and reliable model for predicting methane viscosity at high pressures and high temperatures显示文摘In recent years, there has been an increase of interest in the flow of gases at relatively high pressures and high temperatures. Hydrodynamic calculation of the energy losses in the flow of gases in conduits, as well as through the porous media constituting natural petroleum reservoirs, requires knowledge of the viscosity of the fluid at the pressure and temperature involved. Although there are numerous publications concerning the viscosity of methane at atmospheric pressure, there appears to be little information available relating to the effect of pressure and temperature upon the viscosity. A survey of the literature reveals that the disagreements between published data on the viscosity of methane are common and that most investigations have been conducted over restricted temperature and pressure ranges. Experimental viscosity data for methane are presented for temperatures from 320 to 400 K and pressures from 3000 to 140000 kPa by using falling body viscometer. A summary is given to evaluate the available data for methane, and a comparison is presented for that data common to the experimental range reported in this paper. A new and reliable correlation for methane gas viscosity is presented. Predicted values are given for temperatures up to 400 K and pressures up to 140000 kPa with Average Absolute Percent Relative Error (EABS) of 0.794. | Ehsan Heidaryan Jamshid Moghadasi Amir Salarabadi | 2010 | Journal of Natural Gas Chemistry2010，19，5： | 6 |
| 5 | Formation Damage Through Asphaltene Precipitation Resulting From CO2Gas Injection in Iranian Carbonate Reservoirs显示文摘 | Kalantari-Dahaghi Amir Masoud Gholami Vida Moghadasi Jamshid and Abdi R | 2008 | SPE Production&Operations2008，23，2： | 1 |
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