Study On The Characteristics Of Reservoir Heterogeneity And The Law Of Water Flooding Of Zhujiang Formation In X Block Of Xijiang Oilfield

On the basis of in-depth analysis of geological background and development situation of the study area.Based on the research on data such as lithology,physical properties of airtightal Coring Wells,convention logging interpretation and stratified data,etc.in study area.The interlayer heterogeneity such as the development degree of reservoir sand body,the development degree of the isolation layer and the interlayer physical differences and so on,has been researched.In this paper,the non-homogeneous heterogeneous characterization parameters include permeability variation coefficient,permeability rush coefficient and permeability range were introduced to analyze the heterogeneous characteristics and control factors of the Zhujiang Formatin.Research shows that interlayer heterogeneity is strong,intraformational heterogeneity is mainly controlled by sedimentary microfacies,the heterogeneity of layer mainly composed by braided river channel and underwater distributary channel is weak,while the heterogeneity of layer mainly composed mouth bar and sand sheet is stronger.Using conventional thin sections,casting thin sections,scanning electron microscopy(SEM),whole rock mineral,clay mineral analysis to research the reservoir microscopic heterogeneity such as types of reservoir pore structure,diagenetic heterogeneity,and Oil-water phase permeability characteristics.The study shows that the reservoir pore structure is affected by the difference of sedimentary facies controlling diagenesis.Establish water flooding logging interpretation method of qualitative and quantitative,and compare the conclusions with test oil well and coring Wells,indicated that this flooding logging interpretation method established by this study has a high coincidence.Take coring well as an example.,the relationship between the vertical water flooding characteristics and the intraformational and microscopic heterogeneity.is analyzed.Based on the interpretation data of single well water flooding in each well,the plane water flooding interpolation is carried out for the purpose layer,and the surface water flooding characteristics of each target layer are explored.Based on plane distribution of configuration and sedimentary microfacies,the surface water flooding in the main controlling factors of tectonic configuration,also affected by plane heterogeneity,at the same time,water flooding characteristics and the difference of the redge water flooding between bottom water are analyzed respectively.