In the later stage of development of Dagang Oilfield, many problems, such as inadaptable process, severe corrosion of equipment, high energy consumption and high maintenance cost, have been presented in the oilfield surface system. Through the research and field application of the optimization and simplification technology of surface system, the technology series of optimization and simplification with Dagang features has been formed. This article focuses on oil well software metering technology, intelligent control technology of water injection wells, oil well single-pipe transportation technology, gathering and transportation and water injection process optimization technologies.
Through the research and application of the optimization and simplification technology of surface system, the metering technology and the single well oil collection technology were simplified, the metering station was cancelled, the mixed water system was shut down, the oil and water pipe network and the process flow were shortened. The production and operation cost, system operation and maintenance expenses and construction investment have been descended evidently. It also has a significant effect on energy saving and consumption reduction and explores a new road for improving the development efficiency and sustainable development of old oil fields.