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油田开采生产出的污水,经过处理再作为注水回注油层,不但是综合利用水的资源问题,而且是防止污染、保护环境的重要措施。油田不同,其油层岩性及产出水的性质不同,对用作注水回注的水质的要求也不同;油田大小不同,产出污水的水量也不同,而且往往相差很大。因此,污水处理设施不可能完全一样。寻求合理、经济的污水处理设施,确定符合本油田的回注水质要求,是有重要意义的。
Sewage produced by oilfield exploitation, treated and then injected into the reservoir as a water injection, is not only an issue of comprehensive utilization of water resources, but also an important measure to prevent pollution and protect the environment. Different oil fields have different reservoir lithology and produced water characteristics, and have different requirements on the quality of water used for water injection. Oil fields produce different amounts of water and often vary greatly in size. Therefore, the sewage treatment facilities can not be exactly the same. It is of great importance to seek a reasonable and economical wastewater treatment facilities and to determine the water quality requirements for injection backfill in this field.