Injection Development Dynamic Analysis Of Yan-9Reservior In Song Jia Wa

The Practice of oilfield development indicated that developing oilfield using water flooding can achieve higher ultimate recovery. The reason why water-free recovey and low ultimate recovery in more reservoirs at home and abraod is that formations anisotropy and the defieieney of natural water energy. In order to improve displacing effieieney, sustain formration energry and enhance the ultimate reeovery, artificial injection must be supplied. How to evaluate the effect of water-drive reservoir. In this paper, Yan9reservoir in Song Jia Wa was taken as an example because there are a few geological investigated in this field, with worse development form, water content are increasing more rapidly, oil production are declining fast, injection-production system are part imperfect.Therefore, it is essential that further understanding of reservoir geological characteristics. Also, it is necessary to make synthetical evaluation for the Development effect by using the traditional dynamic analysis method and numerical reservoir simulation. The main contents as follows:1) conducting a new study on geological features of reservoir according to structure, precipitation facies, sand body, reservoir characteristics.2) building three-dimensional geological modeling on the basis of geological.3) making comprehensive assessment of the Yan9reservoir in Song Jia Wa by using dynamic analysis and effectiveness evaluation method, such as Water displacement recovery evaluation, the analysis of deliverability variation beofre and after water injection, advance the correlation method of index variation beforer and after water injection and the correlation method of natural indexical variation.4) Fitting the Song Jia Wa reservor’geologic reserve to the production histoy, made a further analysis of reservoir’s developmnet measures and the direction of measure adjustment.In a word, the development Startegy and dajustment measure were proveed be reasonable on the development process of Song Jia Wa reservoir, it has an important contribution to enhance oil recovery.