Investigation into the microscopic mechanism underlying formation damage induced by the reinjection of oil-bearing wastewater
The reinjection of treated oilfield water into formations stands as one of the commonly employed methods in oilfield water injection development. However, certain treated waters contain a substantial number of suspended oil droplets, which can lead to the blockage of flow paths and pore channels. At...
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Frontiers Media S.A.
2025-05-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2025.1611943/full |
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| author | Chao Tang Chao Tang Chao Tang Ke Du Ke Du Ke Du Gongshuai Guan Gongshuai Guan Gongshuai Guan Xiangfu Gai Xiangfu Gai Xiangfu Gai Guo Li Guo Li Guo Li Qingsong Li Qingsong Li Qingsong Li Lichao Wang Lichao Wang Lichao Wang Hongguang Guo Hongguang Guo Hongguang Guo Wenping Sun Wenping Sun Wenping Sun Chao Gao Chao Gao Chao Gao Weiwei Xu Weiwei Xu Weiwei Xu Zhuoyuan Lu Junwei Su Dengke Liu |
| author_facet | Chao Tang Chao Tang Chao Tang Ke Du Ke Du Ke Du Gongshuai Guan Gongshuai Guan Gongshuai Guan Xiangfu Gai Xiangfu Gai Xiangfu Gai Guo Li Guo Li Guo Li Qingsong Li Qingsong Li Qingsong Li Lichao Wang Lichao Wang Lichao Wang Hongguang Guo Hongguang Guo Hongguang Guo Wenping Sun Wenping Sun Wenping Sun Chao Gao Chao Gao Chao Gao Weiwei Xu Weiwei Xu Weiwei Xu Zhuoyuan Lu Junwei Su Dengke Liu |
| author_sort | Chao Tang |
| collection | DOAJ |
| description | The reinjection of treated oilfield water into formations stands as one of the commonly employed methods in oilfield water injection development. However, certain treated waters contain a substantial number of suspended oil droplets, which can lead to the blockage of flow paths and pore channels. At present, there is a deficiency in experimental verification results regarding the reinjection of oily wastewater, and a lack of a reasonable explanation for the micro-mechanism underlying oil droplet migration. Consequently, in order to elucidate the distribution characteristics of oil droplets and the microscopic mechanism of oil droplet migration during the process of oilfield treatment water reinjection, a simulated oil and microfluidic chip were fabricated to conduct relevant experiments. The experimental results reveal that the particle size of oil droplets is the most crucial control indicator affecting reservoir blockage, with a porosity damage rate of 21.9% and a permeability damage rate of 20.9%. The results further indicate that large oil droplets directly block the pores, while small oil droplets blocking the pores exhibit two regional characteristics: saturated blockage and unsaturated blockage. Additionally, the numerical simulation results are in agreement with the experimental findings. This study offers a framework for the implementation of wastewater reinjection in oilfield operations. |
| format | Article |
| id | doaj-art-da5edd7b7c3441f9870d19a9d37637c0 |
| institution | DOAJ |
| issn | 2296-6463 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj-art-da5edd7b7c3441f9870d19a9d37637c02025-08-20T03:05:56ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632025-05-011310.3389/feart.2025.16119431611943Investigation into the microscopic mechanism underlying formation damage induced by the reinjection of oil-bearing wastewaterChao Tang0Chao Tang1Chao Tang2Ke Du3Ke Du4Ke Du5Gongshuai Guan6Gongshuai Guan7Gongshuai Guan8Xiangfu Gai9Xiangfu Gai10Xiangfu Gai11Guo Li12Guo Li13Guo Li14Qingsong Li15Qingsong Li16Qingsong Li17Lichao Wang18Lichao Wang19Lichao Wang20Hongguang Guo21Hongguang Guo22Hongguang Guo23Wenping Sun24Wenping Sun25Wenping Sun26Chao Gao27Chao Gao28Chao Gao29Weiwei Xu30Weiwei Xu31Weiwei Xu32Zhuoyuan Lu33Junwei Su34Dengke Liu35Daqing Oilfield Production Technology Institute, Daqing, ChinaHeilongjiang Provincial Key Laboratory for Increasing Oil and Gas Reservoir Yield, Daqing, ChinaState Key Laboratory of Continental Shale Oil, Daqing, ChinaDaqing Oilfield Production Technology Institute, Daqing, ChinaHeilongjiang Provincial Key Laboratory for Increasing Oil and Gas Reservoir Yield, Daqing, ChinaState Key Laboratory of Continental Shale Oil, Daqing, ChinaDaqing Oilfield Production Technology Institute, Daqing, ChinaHeilongjiang Provincial Key Laboratory for Increasing Oil and Gas Reservoir Yield, Daqing, ChinaState Key Laboratory of Continental Shale Oil, Daqing, ChinaDaqing Oilfield Production Technology Institute, Daqing, ChinaHeilongjiang Provincial Key Laboratory for Increasing Oil and Gas Reservoir Yield, Daqing, ChinaState Key Laboratory of Continental Shale Oil, Daqing, ChinaDaqing Oilfield Production Technology Institute, Daqing, ChinaHeilongjiang Provincial Key Laboratory for Increasing Oil and Gas Reservoir Yield, Daqing, ChinaState Key Laboratory of Continental Shale Oil, Daqing, ChinaDaqing Oilfield Production Technology Institute, Daqing, ChinaHeilongjiang Provincial Key Laboratory for Increasing Oil and Gas Reservoir Yield, Daqing, ChinaState Key Laboratory of Continental Shale Oil, Daqing, ChinaDaqing Oilfield Production Technology Institute, Daqing, ChinaHeilongjiang Provincial Key Laboratory for Increasing Oil and Gas Reservoir Yield, Daqing, ChinaState Key Laboratory of Continental Shale Oil, Daqing, ChinaDaqing Oilfield Production Technology Institute, Daqing, ChinaHeilongjiang Provincial Key Laboratory for Increasing Oil and Gas Reservoir Yield, Daqing, ChinaState Key Laboratory of Continental Shale Oil, Daqing, ChinaDaqing Oilfield Production Technology Institute, Daqing, ChinaHeilongjiang Provincial Key Laboratory for Increasing Oil and Gas Reservoir Yield, Daqing, ChinaState Key Laboratory of Continental Shale Oil, Daqing, ChinaDaqing Oilfield Production Technology Institute, Daqing, ChinaHeilongjiang Provincial Key Laboratory for Increasing Oil and Gas Reservoir Yield, Daqing, ChinaState Key Laboratory of Continental Shale Oil, Daqing, ChinaDaqing Oilfield Production Technology Institute, Daqing, ChinaHeilongjiang Provincial Key Laboratory for Increasing Oil and Gas Reservoir Yield, Daqing, ChinaState Key Laboratory of Continental Shale Oil, Daqing, ChinaInternational School, Beijing University of Posts and Telecommunications, Beijing, ChinaSchool of Human Settlement and Civil Engineering, Xi’an Jiaotong University, Xi’an, ChinaSchool of Human Settlement and Civil Engineering, Xi’an Jiaotong University, Xi’an, ChinaThe reinjection of treated oilfield water into formations stands as one of the commonly employed methods in oilfield water injection development. However, certain treated waters contain a substantial number of suspended oil droplets, which can lead to the blockage of flow paths and pore channels. At present, there is a deficiency in experimental verification results regarding the reinjection of oily wastewater, and a lack of a reasonable explanation for the micro-mechanism underlying oil droplet migration. Consequently, in order to elucidate the distribution characteristics of oil droplets and the microscopic mechanism of oil droplet migration during the process of oilfield treatment water reinjection, a simulated oil and microfluidic chip were fabricated to conduct relevant experiments. The experimental results reveal that the particle size of oil droplets is the most crucial control indicator affecting reservoir blockage, with a porosity damage rate of 21.9% and a permeability damage rate of 20.9%. The results further indicate that large oil droplets directly block the pores, while small oil droplets blocking the pores exhibit two regional characteristics: saturated blockage and unsaturated blockage. Additionally, the numerical simulation results are in agreement with the experimental findings. This study offers a framework for the implementation of wastewater reinjection in oilfield operations.https://www.frontiersin.org/articles/10.3389/feart.2025.1611943/fullreinjected wastewaterformation damagemicrofluidic chipmicroscopic blockagefluid flow behavior |
| spellingShingle | Chao Tang Chao Tang Chao Tang Ke Du Ke Du Ke Du Gongshuai Guan Gongshuai Guan Gongshuai Guan Xiangfu Gai Xiangfu Gai Xiangfu Gai Guo Li Guo Li Guo Li Qingsong Li Qingsong Li Qingsong Li Lichao Wang Lichao Wang Lichao Wang Hongguang Guo Hongguang Guo Hongguang Guo Wenping Sun Wenping Sun Wenping Sun Chao Gao Chao Gao Chao Gao Weiwei Xu Weiwei Xu Weiwei Xu Zhuoyuan Lu Junwei Su Dengke Liu Investigation into the microscopic mechanism underlying formation damage induced by the reinjection of oil-bearing wastewater Frontiers in Earth Science reinjected wastewater formation damage microfluidic chip microscopic blockage fluid flow behavior |
| title | Investigation into the microscopic mechanism underlying formation damage induced by the reinjection of oil-bearing wastewater |
| title_full | Investigation into the microscopic mechanism underlying formation damage induced by the reinjection of oil-bearing wastewater |
| title_fullStr | Investigation into the microscopic mechanism underlying formation damage induced by the reinjection of oil-bearing wastewater |
| title_full_unstemmed | Investigation into the microscopic mechanism underlying formation damage induced by the reinjection of oil-bearing wastewater |
| title_short | Investigation into the microscopic mechanism underlying formation damage induced by the reinjection of oil-bearing wastewater |
| title_sort | investigation into the microscopic mechanism underlying formation damage induced by the reinjection of oil bearing wastewater |
| topic | reinjected wastewater formation damage microfluidic chip microscopic blockage fluid flow behavior |
| url | https://www.frontiersin.org/articles/10.3389/feart.2025.1611943/full |
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