Oil–water separation property of polymer-contained wastewater from polymer-flooding oilfields in Bohai Bay, China

Chen, Hua-xing; Tang, Hongming; Duan, Ming; Liu, Yigang; Liu, Min; Zhao, Feng

doi:10.1080/09593330.2014.990522

Cited by 24 publications

(4 citation statements)

References 21 publications

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“…Flooding to enhance oil recovery from oil fields in China has been used with success with polymer loading of the water, usually with hydrolysed polyacrylamide, which is an anionic PE [27]. Separation of the oil from the water was facilitated by the addition of a cationic inorganic coagulant, In the treatment of oil refinery wastewaters, the weakly basic cationic PEs polyethyleneimine (PEI) and PDMAEMA have been applied before flotation [15].…”

Section: Oil and Grease Removalmentioning

confidence: 99%

The Use of Polymers in the Flotation Treatment of Wastewater

Bolto

Xie

2019

Processes

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The use of flotation for the treatment of wastewaters in general, but especially for the removal of oil, grease, general organic matter, and suspended solids, is well established as a low energy process. Polyelectrolytes (PEs) can enhance performance without adding to the solids load that occurs with inorganic additives such as alum. The bridging of pollutants and the attachment of the resulting aggregates to the air-water interface can be effectively carried out with most wastewaters. Hydrophobic modification of the PEs can be useful for difficult species. It should be applied to the flotation of polyfluoroalkyl substances, for example, as they are not amenable to economical conventional treatment. Similarly, the removal of microplastic particles from sewage effluents by flotation could be enhanced.

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Section: Oil and Grease Removalmentioning

confidence: 99%

The Use of Polymers in the Flotation Treatment of Wastewater

Bolto

Xie

2019

Processes

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“…Therefore, the oil-water separation of produced fluid from polymer flooding is more difficult than that from water flooding. Hence, devices with much longer residence time and several times larger size are required for produced water treatment [17,18].…”

Section: Treatment Technology Of Chemical Flooding Produced Fluid In mentioning

confidence: 99%

Development and Application of Chemical EOR Technologies in China Offshore Oil Fields

Zhang¹,

Zhang²,

Kang³

et al. 2019

Enhanced Oil Recovery Processes - New Technologies

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At present, polymer flooding as the most effective chemical EOR technique is widely used in onshore oil fields in the world. Also, it has been successfully applied in China offshore oil fields as a major EOR technology. CNOOC has preliminarily established a chemical flooding (polymer, polymer-surfactant, weak gel, etc.) technology system including high-efficiency chemical flooding agents, platform injection facilities, and produced liquid treatment technology. Since 2003, pilot tests and field applications were carried out in S, L, and JW oil fields, and predicted oil increment and good economic benefits have been achieved, which proved that offshore chemical EOR technology is feasible and economical. It has explored a new road for increasing the recovery of offshore oil fields and provided a solid technical guarantee for their economic and efficient development.

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“…Thus, the treatment difficulty of PWPF is not prominent and the effluent can basically meet reinjection and discharge index. In offshore oilfields, however, limited spacing of platform does not allow big volume installation for PWPF treatment, so development of fast treatment process is necessary (Chen et al, 2015). After long-term development of oil production, many offshore oilfields enter late high water-cut stage, resulting in continuous increment in PWPF output.…”

Section: Introductionmentioning

confidence: 99%