Abstract: For long-term stable production of a complex fractured reservoir, several measures have to be adopted, such as multi-round large scale fracturing, acidifying, plugging and profile controlling, etc., which allow the reservoir attribute parameters to be changed repeatedly during its development process. The outstanding performances appear in its dual porosity media and the distinct development stages and so on. Taking Huoshaoshan complex fractured reservoir as an example, a complex fractured reservoir numerical simulation is conducted using the method for staged numerical simulation of dual porosity media, by which more accurate prediction of the remaining oil distribution of this reservoir is made during the middle-late period of development, and remarkable effects have been gained in practical application.

Key words: Junggar basin, Huoshaoshan oilfield, fractured reservoir, dual porosity media, staged numerical simulation, remaining oil distribution