Research On The Nmll-1 Small-layer Flow Unit In The Main Area Of ??Bozhong 34-1 Oilfield

In this paper,the NmII-1 small strata in the main section of Minghua Zhen group,Bozhong 34-1 Oilfield is taken as an example.Combined with geology,core,logging and production data,the sequence stratigraphy,sedimentary facies,reservoir geology,oil development Geology and so on as the theoretical guidance,the study area reservoir based on the fine reservoir configuration of the flow unit research.With the deepening of oilfield development,the study of the internal flow unit of the small layer can reasonably divide the reservoir,predict the distribution and nature of the reservoir,determine the distribution law of oil and gas,and make the reservoir heterogeneity and residual oil distribution more accurately Provide a feasible way to the oil field production development and deployment of a certain theoretical and practical significance.In this study,the NmII-1 small strata in the main section of Minghua group,Bozhong 34-1 Oilfield is taken as an example.In the study area,the isochron stratigraphic framework is established in the reservoir area.According to the different stratigraphic facies.And structural unit characteristics of the reservoir and then divided into sand bodies or genetic units,a fine reservoir structure established.Finally,the distribution model of reservoir flow unit is established by quantifying the flow unit in the sand body and analyzing the geological parameters of the reservoir which affect the fluid flow.Through the study,we divided the NmII-1 small layer into four monolayers.The results show that there is a single underwater distributary channel by using the boundary recognition mark between the compound water channel and the underwater distributary channel in the NmII-1 small layer.A single underwater distributary channel migrates frequently,and the overall size increases first and then decreases.There are superimposed and isolated,two types of sand bodies in the vertical underwater distributary channel.The connectivity of sand bodies is semi-connected and not connected.The relationship between the parameters and the yield was studied by combining the geological parameters and the dynamic parameters in the study area.Porosity,permeability and shale content were used to study the flow units.Then SPSS software cluster analysis was used to classify the flow cells.The unit is divided into four types:class I flow unit,type II flow unit,type III flow unit and type IV flow unit.Based on the structural analysis,the research on the flow unit is carried out,and the dynamic characteristics of the production data are analyzed,and the comparison between the flow unit type and the production characteristics is obtained.