| Autor: |
R. N. Burkhanov, N. K. Dvoyashkin |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Oil and Gas Studies. :60-66 |
| ISSN: |
0445-0108 |
| DOI: |
10.31660/0445-0108-2016-3-60-66 |
| Popis: |
Using the NMR method with a pulsed magnetic field gradient the features of crude oil self-diffusion were investigated on samples of oil from the Tula horizon, the oil field Yamashinskoye. It was found that the samples were characterized by a complicated (non-exponential) form of diffusion attenuation of the NMR spin echo amplitude which required the introduction of the concept of effective (average over the entire sample volume) coefficient of selfdiffusion Deff. The temperature dependences of Deff within the temperature range 303-363 K are satisfactorily described by the equation of Arrhenius type equation which enabled to determine the values of self-diffusion activation energy ED in the studied systems. The correlation between the parameters of the studied systems self-diffusion, Deff, ED and their dynamic viscosity was found. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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