Evaluation and Prediction of Well Pattern Adjustment Effect of Gaotaizi Reservoir in Sazhong Development Area
After more than 30 years water flooding development, Gaotaizi reservoir in Mid-east Block of Sazhong development area has entered the high water cut stage. Many problems are exposed in the process of development with the extension of development time. It is necessary to adjust the well pattern and evaluate the effect of well pattern adjustment. This paper studies the development effects from many aspects after well infilling of Gaotaizi reservoir. In addition, the numerical simulation method is used to predict the oil field production capacity in the future, so as to provide a useful reference for future oil field production. After well optimization and adjustment, the annual oil production and the degree of water flooding reserves production have increased in varying degrees. By numerical simulation, it is expected that the recovery level can be improved by 2.98%, and the recoverable reserves will be increased by 108.98 × 104t by 2025. The research findings of this paper have important guiding significance and application value for the development and production of similar high water cut oil fields.
KeywordsWell pattern adjustment High water cut stage Development effect Enhanced oil recovery Numerical simulation
This research is supported by National Science and Technology Major Project of the Ministry of Science and Technology of China (Grant No. 2016ZX05015-002).
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