Study On The Mathematical Modeling And Control Method For Oilfield Water Flooding System

A properly simplified mathematical model of the unit of the waterinjection system is established in this paper, including pump station model,pipe line net model and water allocating station model. On this basis, gives amethod of establishing the vector method of the system for reduce designinjection error rate. It is very difficult to directly study the whole waterinjection system, because it is a huge multi-source and multi-sink system.Analyzed the characters of pressure distribution, the system can be dividedinto a series of subsystems, then a iterative algorithm of large-scale systemtheory is employed to calculate the system, the paper gives iterativealgorithm of subsystem and system. Technologies of running control arestudied, such as valve restriction control,the opening amount of pumpcontrol and frequency control, analyzed the principle of control technologiesand applied conditions. The technology of pump controlled by pump wasanalyzed, including the principle of control, effectiveness of energyconservation and control methods. Effective control of the system candecrease energy consumption greatly. A software is programmed based onthe model and calculation method, verified the model and method adopt thedata of water injection system. Calculated the program of running pumps andoperational parameters in according with design injection rate, the parameterscan operate the running of system.