Current status and prospect of zonal water injection technology in Huabei Oilfield

The level of zonal water injection technology directly affects the development efficiency of oilfields developed by water injection. In view of the status quo of zonal water injection technologies in Huabei Oilfield, the main problems were analyzed; by combining the reservoir characteristics of Huabei Oilfield, three zonal water injection technologies were selected: bridge-type eccentric zonal injection, bridge-type concentric zonal injection and integrated zonal injection free from dropping, fishing, testing and adjusting; high-efficiency test and profile control technology was introduced; the research on a series of accessory tools for zonal injection was performed. This paper gives a detailed introduction to the characteristics of these three zonal water injection technologies and application in Huabei Oilfield, and points out the development trend of zonal injection technology.