A Study Of Law Of Water Flooding Development In The Main Block Of Longhupao Oil Fields

Based on the full collection of basic Longhupao address information, application software petrel geological modeling, analysis of the regional situation, and further study of the variation of different permeability levels of production decline rate, water cut, block composite water cut, water cut rising rate and pressure. Finally through the study of Longhupao subject development of data blocks to predict reasonable oil recovery rate, reasonable injection production ratio and reasonable injection production ratio index limits, grasping the development law of LonghupaoDevelopment Zone of high water cut period, on the basis of this, whether in the high water cut stage application technology research developed in the late high water cutlimit. Application of technology of reservoir engineering theory, the material balance theory, economics theory, the nine factory Longhupao oilfield technology boundaries to study, the actual production to guide the work of the next step of oil.VB language programming is applied to data processing. Every well is constructed with production split in single layer, and the change regulation of decreasing rate for production is obtained. We make use of the calculated liquid production of single well and single layer to get the change regulation of total water cut. Attenuation equation is used to calculate a ration speed for oil production. By means of Logistic cyclic model, the relationship of injection production ratio is founded. Ration injection-production ratio on the condition of different permeability levels is calculated. The calculation formula of injection-production ratio is obtained through plugging elastic oil rate and water invasion coefficient into the formula of injection-production ratio. We can get the injection-production ratio after plugging reservoir pressure and production speed into the formula.