Reservoir Modeling for Middle or Later Step of Exploitation in H Area of Ansai Oilfield

Key words: 
• middle or later step of oilfields exploitation /
• reservoir characterization /
• reservoir modeling /
• faciescontrolled modeling. /

Abstract: The reservoir of Ansai oilfield was low porosity and low permeability reservoir. The characteristic of the reservoir and microfacies of Chang6 reservoir in H area of Ansai oilfield was analyzed, and the characteristic of the six microfacies include underwater channel, riverside, interfluve, debouch bar, underwater lateral levee, and sheet sand in the area were analyzed in detail. The facies model and reservoir model of the study area were built up by using lots of indicators. The results of the modeling show that ,under the control of facies model, the reservoir model can show the facts underground better, and the model is fit for the work for developing the remaining oil.