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In January 2018, the external market and Scientific Research Institute of the company established the evaluation system of surfactants in tension, thermal stability, adsorption, viscosity retention, emulsification, antibacterial, washing oil, etc, and passed the sample evaluation of Dagang Research Institute. On January 10, 2018, the injection of Guan 109 block was realized (the oil increase base of Guan 109 rose from 26 to 43, increased 17 tons of oil per day). In the same year, the Yangyi and Kong Ernan blocks in Dagang were opened up successively, and products were injected smoothly. The external market has taken a firmer step.