Applications of Equations of State in the Oil and Gas Industry

Ashour, Ibrahim; Al-Rawahi, Nabeel; Fatemi, Amin; Vakili‐Nezhaad, Gholamreza

doi:10.5772/23668

Cited by 20 publications

(13 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Equations of state are instrumental in the calculation of Pressure-Volume-Temperature (PVT) behavior of petroleum gas/liquid systems at equilibrium. Reservoir fluids contain a variety of substances of diverse chemical nature that include hydrocarbons and nonhydrocarbons (Ashour, 2011). Hydrocarbons range from methane to substances that may contain 100 carbon atoms.…”

Section: Equation Of Statementioning

confidence: 99%

“…Hydrocarbons range from methane to substances that may contain 100 carbon atoms. In spite of the complexity of hydrocarbon fluids found in underground reservoirs, equations of state have shown surprising performance in the phase-behavior calculations of these complex fluids (Ashour, 2011).…”

Section: Equation Of Statementioning

confidence: 99%

“…Since till to date, no single equation of state accurately predicts the properties of all substances under all conditions, a number of equations of state have been developed for gases and liquids, over the course of thermodynamics history. Among the various categories of EOS, the Cubic Equations of State have been used in this work, as they have been widely used and tested for predicting the behavior of hydrocarbon systems (Ashour, 2011) (Kovscek, 1996).…”

Section: Equation Of Statementioning

confidence: 99%

See 2 more Smart Citations

Impact of Capillary Pressure and Critical Property Shift due to Confinement on Hydrocarbon Production in Shale Reservoirs

Haider

Aziz

2017

SPE Reservoir Simulation Conference

View full text Add to dashboard Cite

This thesis marks the end of a great chapter of my life and the beginning of several stellar possibilities. My two years at Stanford have changed my life and the knowledge I have gained will certainly brighten my future paths like never before. My thanks to Energy Resources Engineering, Reservoir Simulation Industrial Affiliates (SUPRI-B) program and ENI for funding my MS and Stanford Summer Tutorial program which gave me one of the best experiences of lecturing Stanford students in my final quarter of MS. I would like to thank Dr. Khalid Aziz who accepted me as his student and guided me throughout this research. To have worked with him was such a great privilege. When I had come to Stanford, I may not have been the best student in our batch, but towards the beginning of my second year, I was well determined to produce one of the best MS theses submitted in our year. I would like to thank Denis Voskov, who is extremely knowledgeable and his suggested directions were very important to my research. My heartfelt thanks to Dr. Huanquan for his great tips and advices, which made me redo my results over and over again. I am very grateful to Sergey Klevtsov, who was the one you actually got be started with AD-GPRS. My initial progress with AD-GPRS would not have been so rapid had it not been for him. Finally I would like to thank Sergey Chaynikov for the many hours he spent listening to my issues and advising me about the possible strategies to ponder over. He has always been available on just an email of mine. I would also love to mention some of the awesome people I met at Stanford-my office mates and other friends which include

show abstract

Section: Equation Of Statementioning

confidence: 99%

Section: Equation Of Statementioning

confidence: 99%

Section: Equation Of Statementioning

confidence: 99%

See 1 more Smart Citation

Impact of Capillary Pressure and Critical Property Shift due to Confinement on Hydrocarbon Production in Shale Reservoirs

Haider

Aziz

2017

SPE Reservoir Simulation Conference

View full text Add to dashboard Cite

show abstract

“…The Peng-Robinson (PR) equation of state is employed to calculate the vapor-liquid equilibria and the chemical compounds thermodynamic properties. The PR equation is commonly applied to hydrocarbon mixture systems and are specifically used for hydrocarbon fluids found in underground reservoirs [24].…”

mentioning

confidence: 99%

Process Modeling and Evaluation of Plasma-Assisted Ethylene Production from Methane

2019

View full text Add to dashboard Cite

The electrification of the petrochemical industry, imposed by the urgent need for decarbonization and driven by the incessant growth of renewable electricity share, necessitates electricity-driven technologies for efficient conversion of fossil fuels to chemicals. Non-thermal plasma reactor systems that successfully perform in lab scale are investigated for this purpose. However, the feasibility of such electrified processes at industrial scale is still questionable. In this context, two process alternatives for ethylene production via plasma-assisted non-oxidative methane coupling have conceptually been designed based on previous work of our group namely, a direct plasma-assisted methane-to-ethylene process (one-step process) and a hybrid plasma-catalytic methane-to-ethylene process (two-step process). Both processes are simulated in the Aspen Plus V10 process simulator and also consider the technical limitations of a real industrial environment. The economically favorable operating window (range of operating conditions at which the target product purity is met at minimum utility cost) is defined via sensitivity analysis. Preliminary results reveal that the hybrid plasma-catalytic process requires 21% less electricity than the direct one, while the electric power consumed for the plasma-assisted reaction is the major cost driver in both processes, accounting for ~75% of the total electric power demand. Finally, plasma-assisted processes are not economically viable at present. However, future decrease in electricity prices due to renewable electricity production increase can radically affect process economics. Given that a break-even electricity price of 35 USD/MWh (without considering the capital cost) is calculated for the two-step plasma process and that current electricity prices for some energy intensive industries in certain countries can be as low as 50 USD/MWh, the plasma-assisted processes may become economically viable in the future.

show abstract

“…The Peng-Robinson equation of state is a cubic equation and it is considered one of the Van der Waals equation of state forms. This equation was improved byPeng and Robinson in 1976 in order to enhance density prediction of reservoir fluid systems(Ashour, AL-Rawahi, Fatemi, & Nezhaad, 2011). Peng-Robinson EOS provides the ability to identify the phase of a substance by calculating vapor pressure based on the temperature and molar parameters.…”

mentioning

confidence: 99%

Impact of Pore Size on Gas Condensate Critical Properties Confined in Marcellus Shale

Allawe¹

View full text Add to dashboard Cite

Impact of Pore Size on Gas Condensate Critical Properties Confined in Marcellus Shale Erfan Mustafa Allawe Gas condensate reservoirs have become an important topic of research for reservoir engineers due to the drop in gas prices in the past few years. Because of this drop, the majority of gas producers have become more interested in condensate and wet gas resources. However, gas condensate reservoirs have a unique phase behavior system and they are considered the most complicated reservoirs to develop due to the continuous composition changes. Therefore, the effects of nanopores on the critical properties of the confined gas condensate in the Marcellus Shale will be investigated in this research in order to achieve the optimum gas and condensate production and to improve reservoir management plans for this kind of reservoir. I would like to thank my committee members for their help who were more than generous with their time. A special and deep thanks to Dr. Kashy Aminian, my advisor and my committee chairman for his hours of reviewing, reading, and most of all, patience throughout the entire process. My gratitude and appreciation also goes to Dr. Samuel Ameri and Dr. Fatemeh Belyadi, who kindly accepted to be part of my advising committee. Finally, I would like to thank all my professors and my colleagues from the Petroleum and Natural Gas Engineering department, especially my officemates, for their help and support during my work. Lastly, I owe a big thank you to West Virginia University for everything. vi

show abstract

Applications of Equations of State in the Oil and Gas Industry

Cited by 20 publications

References 22 publications

Impact of Capillary Pressure and Critical Property Shift due to Confinement on Hydrocarbon Production in Shale Reservoirs

Impact of Capillary Pressure and Critical Property Shift due to Confinement on Hydrocarbon Production in Shale Reservoirs

Process Modeling and Evaluation of Plasma-Assisted Ethylene Production from Methane

Impact of Pore Size on Gas Condensate Critical Properties Confined in Marcellus Shale

Contact Info

Product

Resources

About