Full
Outline
Aiming at the problems of low pre‑separation efficiency and unsatisfactory oil-water separation performance for high water‑cut produced fluid，a grid‑type coalescing component was designed based on theoretical analysis of oil‑droplet motion and coalescence behavior to increase the rising velocity of oil droplets and enhance the overall separation performance.Comparative experiments were carried out to systematically evaluate the separation performance of four configurations：separator without coalescing inserts，parallel perforated corrugated‑plate，parallel serpentine‑plate，and the proposed grid‑type coalescing component，under various operating temperatures and residence times.The experimental results demonstrate that at an inlet temperature of 35 ℃ and a residence time of 20 min，the oil content at the aqueous‑phase outlet decreases by 79%~88.4% after installing coalescing inserts.Specifically，the grid‑type coalescing component reduces the aqueous‑phase outlet oil content to 174 mg/L，which considerably outperforms conventional components and satisfies the requirements for subsequent water treatment.As the temperature rises from 25 ℃ to 35 ℃，the separation performance of all separators is improved，and the grid‑type coalescing component achieves the largest reduction （76.8%） in outlet oil content.Balancing separation performance and energy consumption，30 ℃ is identified as the optimal operating temperature.Prolonging the residence time can further boost separation efficiency；the improvement is most pronounced for the grid‑type coalescing component.During 60 min continuous operation，the aqueous‑phase outlet oil content stabilizes at approximately 257 mg/L，the water content at the oil‑phase outlet remains at 29%，and the overall separation efficiency reaches up to 99.8%，exhibiting favorable stability for continuous operation.This novel coalescing component can substantially improve the separation efficiency and operational stability for high water‑cut produced fluid，offering a new technical route and theoretical support for the efficient treatment of oilfield produced fluid.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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