Effect of CO2 Huff and Puff Rounds on Crude Oil Properties
In view of the deterioration of oil well liquid supply capacity and oil increase effect after multiple rounds of carbon dioxide (CO2) huff and puff, according to the actual conditions of the Ng12 reservoir in the XA oilfield, an indoor physical simulation experimental model was established. The expe...
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| Format: | Article |
| Language: | English |
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Wiley
2023-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2023/1008075 |
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| _version_ | 1832547363971923968 |
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| author | Qionglin Shi Sha Gong Xiaoping Qin |
| author_facet | Qionglin Shi Sha Gong Xiaoping Qin |
| author_sort | Qionglin Shi |
| collection | DOAJ |
| description | In view of the deterioration of oil well liquid supply capacity and oil increase effect after multiple rounds of carbon dioxide (CO2) huff and puff, according to the actual conditions of the Ng12 reservoir in the XA oilfield, an indoor physical simulation experimental model was established. The experimental parameters were determined, five rounds of CO2 huff and puff experiments were carried out, and the crude oil produced in the water flooding stage and different rounds of CO2 huff and puff were collected. The effects of CO2 huff and puff rounds on crude oil viscosity, density, composition, paraffin content, and gum asphaltene content were studied. The results show that with the increase in CO2 huff and puff rounds, the viscosity and density of produced crude oil decrease. The content of light component (C2∼C6) and intermediate component (C7∼C10) increased, while the content of heavy component (C11+) decreased. CO2 has the strongest extraction effect on light components and the weakest extraction effect on heavy components. At the same time, the content of paraffin and gum asphaltene in the produced crude oil is reduced. For oil wells with multiple rounds of CO2 huff and puff, colloidal asphaltene precipitation inhibitor and scavenger should be considered to reduce the impact of colloidal asphaltene on formation permeability and liquid supply capacity. |
| format | Article |
| id | doaj-art-6fa86023c4874e05beb2ea0d4d7603d0 |
| institution | Kabale University |
| issn | 2090-9071 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-6fa86023c4874e05beb2ea0d4d7603d02025-02-03T06:45:10ZengWileyJournal of Chemistry2090-90712023-01-01202310.1155/2023/1008075Effect of CO2 Huff and Puff Rounds on Crude Oil PropertiesQionglin Shi0Sha Gong1Xiaoping Qin2Onshore Oilfield Operation AreaOnshore Oilfield Operation AreaSchool of Chemical EngineeringIn view of the deterioration of oil well liquid supply capacity and oil increase effect after multiple rounds of carbon dioxide (CO2) huff and puff, according to the actual conditions of the Ng12 reservoir in the XA oilfield, an indoor physical simulation experimental model was established. The experimental parameters were determined, five rounds of CO2 huff and puff experiments were carried out, and the crude oil produced in the water flooding stage and different rounds of CO2 huff and puff were collected. The effects of CO2 huff and puff rounds on crude oil viscosity, density, composition, paraffin content, and gum asphaltene content were studied. The results show that with the increase in CO2 huff and puff rounds, the viscosity and density of produced crude oil decrease. The content of light component (C2∼C6) and intermediate component (C7∼C10) increased, while the content of heavy component (C11+) decreased. CO2 has the strongest extraction effect on light components and the weakest extraction effect on heavy components. At the same time, the content of paraffin and gum asphaltene in the produced crude oil is reduced. For oil wells with multiple rounds of CO2 huff and puff, colloidal asphaltene precipitation inhibitor and scavenger should be considered to reduce the impact of colloidal asphaltene on formation permeability and liquid supply capacity.http://dx.doi.org/10.1155/2023/1008075 |
| spellingShingle | Qionglin Shi Sha Gong Xiaoping Qin Effect of CO2 Huff and Puff Rounds on Crude Oil Properties Journal of Chemistry |
| title | Effect of CO2 Huff and Puff Rounds on Crude Oil Properties |
| title_full | Effect of CO2 Huff and Puff Rounds on Crude Oil Properties |
| title_fullStr | Effect of CO2 Huff and Puff Rounds on Crude Oil Properties |
| title_full_unstemmed | Effect of CO2 Huff and Puff Rounds on Crude Oil Properties |
| title_short | Effect of CO2 Huff and Puff Rounds on Crude Oil Properties |
| title_sort | effect of co2 huff and puff rounds on crude oil properties |
| url | http://dx.doi.org/10.1155/2023/1008075 |
| work_keys_str_mv | AT qionglinshi effectofco2huffandpuffroundsoncrudeoilproperties AT shagong effectofco2huffandpuffroundsoncrudeoilproperties AT xiaopingqin effectofco2huffandpuffroundsoncrudeoilproperties |