Study On Air Flooding Of Buried Hill Reservoir In Block M Of L Oilfield

With the advancement of exploration and development technologies,buried hill reservoirs have gradually entered people’s eyes.The buried hill fracture reservoir is a typical doublemedium reservoir,resulting in depleted mining and traditional water injection development.As a result,the production capacity is reduced and the water content is high,so that the “garage oil” and the reserves in the matrix cannot be effectively mined.Must change the development method.Under the current situation of low oil prices,gas injection development has regained widespread attention.Compared with other development methods,gas injection development has the characteristics of low cost and abundant resources.Therefore,the problems caused by traditional development can be solved by gas injection development in buried hill reservoirs.This article is divided into two parts.The first part is the physical model experiment.Through the long core model,the non-hydrocarbon gas displacement mechanism is firstly achieved by conducting non-hydrocarbon gas phase characteristics experiments,lowtemperature oxidation experiments,and crude oil physical property change experiments;The analysis of the physical parameters of the core and the analysis of the starting pressure make it more clear to the core of the fracture,and on the basis of this understanding,the oil displacement experiments in the fractured reservoir were carried out and the mechanism of oil displacement was determined.The second part is the mathematical model.First,according to the geological parameters and fluid parameters of the L oilfield,a typical model is established to analyze the various factors affecting air flooding;then,based on the data provided by the site,the geological model of the L oilfield is established and historically fitted.And gas injection well group optimization.