Abstract
Substantial produced water in oilfield need to be treated. Treatment mechanism such as adsorption, flotation, filtration, desalination, etc. are described. Based on the mechanisms, process and technology, tools and facility for produced water treatment are compared. Technology selection method and requirements are discussed. Multiple processes combination is discussed and considered as promising.
Highlights
When an oil field matures, it produces more produced water than before
The volume of produced water generated in the cases can be substantial
There are a few factors to consider for proper treatment levels and technologies, such as disposal methods, goals, environmental impacts, and economics
Summary
Steam flooding heavy oil-bitumen can generate water 2 to 20 times as much as oil, approximately four in most cases. The volume of produced water generated in the cases can be substantial. Much of the produced water in oilfield may either be unspoiled or reused in the following recovery, most oilfield production generate huge amount of polluted waters need to be safely discharged. There are a few factors to consider for proper treatment levels and technologies, such as disposal methods, goals, environmental impacts, and economics. At some locations, produced water contains substantial total dissolved solids, which is unsuitable for reuse in oilfield unless treated, reduce dissolved solids concentrations and reach standard level. For characterization and treatment of produced water, technologies evaluation, literatures are reviewed to identify reasonable ones, considering technical and economic influence
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