Change of physical and chemical properties of asphaltene-resin-paraffin deposits deposits in tubing
| Autor: | V. Sh Mukhametshin, A.V. Andreev, Le Viet Zung, M M Veliev, A Kh Gabzalilova, E M Veliev |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | IOP Conference Series: Earth and Environmental Science. 866:012022 |
| ISSN: | 1755-1315 1755-1307 |
| Popis: | The paper analyzes the geological and physical characteristics of the White Tiger field, deep and estuary samples of oil and asphaltene-resin-paraffin (ARP) deposits, which revealed the main factors leading to the intensive accumulation of asphaltenes on tubing surface during oil production. First of all, these are high formation temperatures (80-120°C) in combination with high paraffin separation temperature (57°C) and a relatively large oil depth (up to 4,500 m). Experimental studies were carried out and chemical reagents consisting of a mixture of polyvinyl acetate and organic solvents were selected (naphthalene, toluene, aromatic derivatives), which affect paraffin separation, which, in turn, leads to a decrease in viscosity and dynamic shear stress at the same temperature, as well as a decrease in oil congelation temperature thereby promoting the inhibition of asphaltene-resin-paraffin deposits by interacting with an activator for gel formation, adsorption on the surface of rocks, i.e. preventing the formation of asphaltene during oil production. |
| Databáze: | OpenAIRE |
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