Abstract: According to analyzing the multi-time series data of the oil field performance,we set up the differential simulation of oil field performance.Using this simulation to predict,we obtained a new way to predict one state variant's development trend from the overall oil field state variants.Also,we calculated the oil production of H-L water-injection oilfield in our conutry.The result obtained is satisfactory.

Key words: water injection well, field performance analysis, time series analysis, differential simulation