Fine Description Of Main Oil Reservoirs In Yanchang Formation Of The Guancaojian In Jingbian Oilfield

Research area is located in Yang mijian of Guan caojian.Due to the complex geological conditions in the area,the knowledge of geology is not clear,so the later exploitation is affected.Therefore,based on the previous research,this paper has acquired the background and formation characteristics of the research area.The two main sections of the study section,The chang 4+5 and chang 6 were divided under the control of the regional marker,the base of the sedimentary cycle,the reference layer thickness.The sedimentary characteristics of the study area were analyzed comprehensively through the single well phase,the sedimentary microfacies profile and the plane graph Based on the rock characteristics of the reservoir,the properties of the reservoir,such as the properties of the reservoir,the non-homogeneity,the sensitivity and so on,are studied through physical analysis and diagenesis.This paper also classifies and evaluates the reservoir.The research indicates that the main development of the research area is the underwater distributary diversion channel sand,and in the leading part of the delta,and there is a certain inheritance in the development of multiple channels in the plane.The reservoir layer is mainly composed of fine sandstone and siltstone,the pore type of reservoir sandstone is mainly granular hole,and the second is the corrosion hole,and the fissure is basically undeveloped.chang4+5 reservoir belongs to the more long-small pore and the throat types for sheet and bent sheet,pore structure for?and?classes;Chang 6 reservoir in-big pore,throat types for neck type,pore structure for?classes and class ?.The inhomogeneity of the study area was stronger Based on the analysis of the reservoir,the reservoir was classified and evaluated by the main parameters,divided into A,B,and C,and mainly by B class reservoir.Research of this paper further deepened the study of the reservoir characteristics and sedimentary facies,the oil field production steady increase,improve the efficiency of oilfield exploitation will have important guiding significance.