Quantitative Study Of Water Drive Recovery Singlewell Controlled Recoverable Reserve

In the process of oilfield development,controlled recoverable reserve is important basis of compiling oilfield development program,comprehensive adjustment and effect evaluation. Whether new area development or old area adjustment, driling new well have the characteristics of great investment and high risk, singlewell controlled recoverable reserve of the new well is the basis and important index of economically feasible of driling new well whether, which determine the importance of study of singlewell controlled recoverable reserve.Bases on fundamentals of reservoir engineering analyzing the main influencing factors of water drive rrecovery singlewell controlled recoverable reserve. By means of numerical simulation,keeping the same of other influencing factors, researching the effect of the main factor on controlled recoverable reserve.By mean of orthogonal experimental design, getting the multivariate analysis sample of singlewell controlled recoverable reserve, bsaed on this, by means of intuitive range analysis method and multivariate factor variance analysis method,researching the effect order of every factor and interaction on singlewell controlled recoverable reserve when they change simultaneously. With the standard regression coefficient method, obtaining the effect weight of static factors under effect of multivariate factor. By grey relational grade analysis method, analyzing the relation order of initial oil production,initial water cut development timing with singlewell controlled recoverable reserve.Building the sample of singlewell controlled recoverable reserve multivariate analysis with orthogonal experimental design, then based on the sample, with the intuitive range analysis method and multifactor variance analysis method, under the condition of multifactor simultaneous change, researching the influence order of every factor and the interaction on singlewell controlled recoverable reserve. With the standard regression coefficient method, getting the effect weight of static factors under effect of multifactor. With the grey relational grade analysis method, analyzing the relation order among initial oil production initial water cut and development time and singlewell controlled recoverable reserve. By means of mathematical statistics method of frequency analysis and descriptive statistics analysis, mathematical statistics analyze simply the 77 practical sample data. From the viewpoint of reservoir analysis and mathematical statistics, proposing the selecting condition of sample data.By means of the function relationship between the singlewell controlled recoverable reserve and influence factors from univariate analysis, building general form of multivariate nonlinear regression model of singlewell controlled recoverable reserve. Then,based on the different sample data,building the different singlewell controlled recoverable reserve.