Study On Rules Of Parameter Variation Of Saertu Putaohua And Gaotaizi Reservoirs Of Xingbei Development Area

In this study, the parameter of Saertu Putaohua and Gaotaizi reservoirs of Xingbei development area in Daqing Oilfield is the main research object, Cored Wells core combined with a small amount of measured data and a large number of drilling logging data etc, Using grafer, surfer, cordraw address software of reservoir porosity, permeability, water saturation, from whole to part time interval for analysis and discussion of the system, Considering all kinds of parameter, using the selected comprehensive, objective and comprehensive reservoir evaluation and classification, Finally, permeability, porosity as the main evaluation standard, has carried on the reservoir evaluation on the four categories of reservoir, the reservoir wettability and relative permeability curve analysis.In this article, on the basis of understanding more further the history and drilling data in the study area distribution, first or credibility evaluation data of the well logging interpretation, using only sealed coring well test analysis data to evaluate the credibility of the logging interpretation data, the error of porosity, permeability and water saturation are within the range, prove that you can use log interpretation data analysis. Then the analysis of seven blocks in the system, including different blocks at the same time changes of reservoir physical properties and different blocks, namely a content analysis of the historical change. The next step is to sealed coring well, sidewall coring well, exploratory well points and explore the sand body reservoir physical property, and for reservoir classification, wettability and relative permeability curve were studied. The last conclusion is porosity overall rising trend, permeability variation is larger, regularity is not obvious, water saturation characteristics is not obvious, but there is a slight rise trend.Reservoir porosity and permeability increases with the increase of the injected water volume ratio, make the injected water flow in the reservoir, especially along the direction of the mainstream line increase amplitude is bigger, lead to the fingering of the water. Compared with the situation of reservoir parameters unchanged, its recovery efficiency and ultimate recovery decreases, and the development effect becomes poor. Different reservoir wettability will produce different oil displacement mechanism, and different oil displacement mechanism of water flooding efficiency and residual oil distribution have important influence.