Viscosity of Natural Gas PDF Download
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Author: William Bennett Berwald
Publisher:
ISBN:
Category : Natural gas
Languages : en
Pages : 38
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Book Description
Author: William Bennett Berwald
Publisher:
ISBN:
Category : Natural gas
Languages : en
Pages : 38
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Book Description
Author: Mario Hugo Gonzalez
Publisher:
ISBN:
Category : Natural gas
Languages : en
Pages : 118
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Book Description
Author: Kegang Ling
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Gas viscosity is one of the gas properties that is vital to petroleum engineering. Its role in the oil and gas production and transportation is indicated by its contribution in the resistance to the flow of a fluid both in porous media and pipes. Although viscosity of some pure components such as methane, ethane, propane, butane, nitrogen, carbon dioxide and binary mixtures of these components at low-intermediate pressure and temperature had been studied intensively and been understood thoroughly, very few investigations were performed on viscosity of naturally occurring gases, especially gas condensates at low-intermediate pressure and temperature, even fewer lab data were published. No gas viscosity data at high pressures and high temperatures (HPHT) is available. Therefore this gap in the oil industry still needs to be filled. Gas viscosity at HPHT becomes crucial to modern oil industry as exploration and production move to deep formation or deep water where HPHT is not uncommon. Therefore, any hydrocarbon encountered there is more gas than oil due to the chemical reaction causing oil to transfer to gas as temperature increases. We need gas viscosity to optimize production rate for production system, estimate reserves, model gas injection, design drilling fluid, and monitor gas movement in well control. Current gas viscosity correlations are derived using measured data at low-moderate pressures and temperatures, and then extrapolated to HPHT. No measured gas viscosities at HPHT are available so far. The validities of these correlations for gas viscosity at HPHT are doubted due to lack of experimental data. In this study, four types of viscometers are evaluated and their advantages and disadvantages are listed. The falling body viscometer is used to measure gas viscosity at a pressure range of 3000 to 25000 psi and a temperature range of 100 to 415 °F. Nitrogen viscosity is measured to take into account of the fact that the concentration of nonhydrocarbons increase drastically in HPHT reservoir. More nitrogen is found as we move to HPHT reservoirs. High concentration nitrogen in natural gas affects not only the heat value of natural gas, but also gas viscosity which is critical to petroleum engineering. Nitrogen is also one of common inject gases in gas injection projects, thus an accurate estimation of its viscosity is vital to analyze reservoir performance. Then methane viscosity is measured to honor that hydrocarbon in HPHT which is almost pure methane. From our experiments, we found that while the Lee-Gonzalez-Eakin correlation estimates gas viscosity at a low-moderate pressure and temperature accurately, it cannot give good match of gas viscosity at HPHT. Apparently, current correlations need to be modified to predict gas viscosity at HPHT. New correlations constructed for HPHT conditions based on our experiment data give more confidence on gas viscosity.
Author: Robert Francis Earhart
Publisher:
ISBN:
Category : Natural gas
Languages : en
Pages : 24
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Author: James Rush Stewart
Publisher:
ISBN:
Category : Gas engineering
Languages : en
Pages : 216
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Author: Paryoongsak Phanphruk
Publisher:
ISBN:
Category :
Languages : en
Pages : 150
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Book Description
Author: W. B. Berwald
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
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Author: Etats-Unis. Mines (Bureau)
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
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Author: Anup Viswanathan
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Estimation of viscosities of naturally occurring petroleum gases provides the information needed to accurately work out reservoir-engineering problems. Existing models for viscosity prediction are limited by data, especially at high pressures and high temperatures. Studies show that the predicted viscosities of natural gases using the current correlation equations are about 15 % higher than the corresponding measured viscosities at high pressures and high temperatures. This project proposes to develop a viscosity prediction model for natural gases at high pressures and high temperatures. The project shows that commercial gas viscosity measurement devices currently available suffer from a variety of problems and do not give reliable or repeatable results. However, at the extremely high pressures encountered in high pressure and high temperature reservoirs, the natural gases consist mainly of methane as the hydrocarbon constituent and some non-hydrocarbon impurities. Available viscosity values of methane were used in the development of a correlation for predicting the viscosities of naturally occurring petroleum gases at high pressures and high temperatures. In the absence of measurements, this correlation can be used with some confidence.
Author: Boyan Guo
Publisher: Elsevier
ISBN: 0127999957
Category : Technology & Engineering
Languages : en
Pages : 493
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Book Description
The demand for energy consumption is increasing rapidly. To avoid the impending energy crunch, more producers are switching from oil to natural gas. While natural gas engineering is well documented through many sources, the computer applications that provide a crucial role in engineering design and analysis are not well published, and emerging technologies, such as shale gas drilling, are generating more advanced applications for engineers to utilize on the job. To keep producers updated, Boyun Guo and Ali Ghalambor have enhanced their best-selling manual, Natural Gas Engineering Handbook, to continue to provide upcoming and practicing engineers the full scope of natural gas engineering with a computer-assisted approach. - A focus on real-world essentials rather than theory - Illustrative examples throughout the text - Working spreadsheet programs for all the engineering calculations on a free and easy to use companion site - Exercise problems at the end of every chapter, including newly added questions utilizing the spreadsheet programs - Expanded sections covering today's technologies, such as multi-fractured horizontal wells and shale gas wells
