截至6月25日，大港油田应用采出水压裂液实施的先导井官78-52井平稳生产3个多月，日产油保真诚供应沙索Sasolwax Spray 3持在7.3吨，累计增油400余吨，展现了这一新型环保压裂液的良好效果。

　　大港油田原来压裂液一直采用淡水，为节约淡水资源、减少采出水外排处理量，大港油田石油工程研究院系统开展采出水水质评价及对压裂液性能影响研究，完成采出水配置压裂液体系配方研究及综合性能评价，解决采出水水质复杂、与常规压裂液配伍性差、性能不稳定等问题，满足了压裂需要。

　　结合海水资源丰富及生产采出液液量大的情况，大港油田近年来系统研发海水基压裂液、采出水压裂液及压裂返排液再利用三大技术，既保障了生产需求，又有效节约了淡水资源。

Dagang Oilfield new environmental fracturing fluid come out

As of June 25, the pilot well Jingguan 78-52 implemented by using produced fracturing fluid in the Dagang Oilfield steadily produced for more than three months and the daily output of crude oil remained at 7.3 tons with a cumulative increase of more than 400 tons, demonstrating this A new type of environmentally friendly fracturing fluid good effect.

Dagang oilfield fracturing fluid had been using fresh water, fresh water in order to save resources and reduce the amount of produced water treatment efflux, Dagang Oilfield Engineering Institute of Petroleum effluent collection system to carry out the evaluation and their impact on the performance of the fracturing fluid, Completion of the production of water configuration fracturing fluid system research and comprehensive performance evaluation formula to solve the complex water quality, compatibility with conventional fracturing fluid poor performance instability and other issues to meet the needs of fracturing. In combination with the rich seawater resources and large amount of liquid produced during production, Dagang Oilfield has systematically developed three major technologies, that is, seawater-based fracturing fluid, produced fracturing fluid and fracturing back-flow fluid reuse in recent years. Not only guarantee the production demand, but also effectively save the freshwater resources.