Researches of asphaltenes deposition processes in case of formation oil interaction with carbon dioxide
UDC: 622.276.6
DOI: 10.33285/0207-2351-2023-12(660)-26-31
Authors:
BELOZEROV IVAN P.
1,
PUSTOVA ELENA YU.1,
KHAKIMOV ALISHER G.1,
KURYATKOV DENIS I.1,
TAKIULIN DAMIR R.1,
KHRIPKOVA EKATERINA A.1,
LARIONOV GLEB D.1
1 Northern (Arctic) Federal University named after M.V. Lomonosov, Arkhangelsk, Russia
Keywords: carbon dioxide impact on reservoir, core material studies, enhanced oil recovery methods, reservoir oil, asphaltenes
Annotation:
This article is devoted to researching some problems that arise during oil displacement from oil-saturated reservoir rocks by carbon dioxide. The technology is of great importance for oil recovery increase at oil fields, provision of oil production ecological safety and reduction of negative impact on the environment.
The authors of the article analyzed the physical processes occurring during the carbon dioxide interaction with oil, water and rock as well as the factors affecting the efficiency of displacement processes.
Particular attention is paid to phase transitions of oil asphaltene components during thair interaction with carbon dioxide, which can lead to the void space colmatation of oil reservoir rocks.
Experimental methods such as isothermal pressure reduction experiment, spectroscopic and filtration methods are used to determine the conditions and dynamics of asphaltene precipitation and phase transitions.
The authors of the article propose an alternative method of asphaltene deposition estimation based on direct laboratory tests using visual, spectroscopic and filtration analysis methods as well as filtration tests of reservoir oil/carbon dioxide mixtures on core material samples of reservoir rocks.
The article also analyzes the results of similar experimental studies published in the works of domestic and foreign authors.
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