With the rapid development of the digital constructions in Huabei oilfield, the area that the automatic monitoring systems must cover becomes larger and larger over times. In addition, the systems built in different local region face many problems, such as the un-unified data format, decentral storage, difficult to share, and low data utilization. Based on MongoDB, a cloud storage platform is built, aiming at synchronizing all the real-time production data from the different automatic monitoring systems to the unified storage format. Then, the secondary development of unified production data on this platform can easily realize the oil/water well on-line analysis, 3D-simulation, real-time monitoring, report, etc. The built cloud platform will satisfy the demand of the integration and optimization for production engineering.