Data Processing Technology in Water Injection at RML Oilfield

Research of data processing technology in water injection is carried out in order to solve the issues that the injection data of RML oilfield is not complete and can not carry out the analysis and optimization of single well injection. PROSPER software is used to establish the water injection model based on percolation and hydraulics theory. By analyzing the pressure variation and head loss of single well, the water injection rate and pressure are calculated. Pipe&net optimization software is used to establish a network model of water injection station and well, and the parameter changes of multi-branch manifold are simulated and calculated. The single well model and water injection station are organically combined to form a complete set of pressure and water injection distribution system. The author establishes an IPR-VLP model of 26 Wells to calculate injection pressure and water absorption index by calculating the pipeline roughness and reservoir pressure. The injection rate is calculated by the curve fitting analysis, and the pipe&net optimization model is used to distribute the injection rate and pressure. Analyses of single well injection and scheme adjustment are carried out by processing the data of 5 water injection stations with this technique. The pertinence and effectiveness of water injection scheme and measures are obviously improved. This technique can be applied to the injection data processing of oilfields with imperfect metering methods in both China and overseas, providing an effective means of data analysis and optimization for oilfield water injection development.