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本文根据室内和矿场研究资料，对大庆油田回注污水后油田开发的效果及其影响因素进行了分析。指出了回注污水后，对中、低渗透油层造成一定程度的堵塞，而对高渗透油层影响较小，从而加剧了注水井内的层间矛盾，对水驱油效率也可能带来不利的影响。指出，控制污水中机械杂质和乳化原油中的颗粒直径是搞好污水回注工作的重要措施。
In this paper, according to the indoor and mine research data, the effect and influencing factors of the oilfield development after the injection of sewage in Daqing Oilfield are analyzed. It is pointed out that after the injection of wastewater, the blockage of middle and low permeability reservoirs will be caused to a certain degree, while the impact on high permeability reservoirs will be less, which aggravates the interlayer conflict in the injection wells and may also adversely affect the water flooding efficiency . Pointed out that the control of mechanical impurities in the sewage and emulsified crude oil particle diameter is an important measure to do a good job of sewage injection work.