Analysis Of Daqing Peripheral Oilfield Construction Of Carbon Dioxidehuff And Puff Effect And Influence Factors

Carbon dioxide huff and puff construction is the carbon dioxide is injected into the reservoir to improve oil recovery rate.Since carbon dioxide is a kind of solubility in oil and water are very high gas,when it is dissolved in oil,can make the oil volume expansion,viscosity decreased,but also can reduce the interfacial tension between oil and water.Compared with other flooding technology,carbon dioxide flooding has wide application range,low cost,oil production rate increased significant advantages.This technology can not only meet the demand for oil field development,but also can solve the problem of carbon dioxide sequestration,atmospheric environment protection.The periphery of Daqing oilfield is a low permeability,low mobility,low yield,difficult to effectively use water flooding.In order to effectively develop this kind of reservoir in Daqing oil field,the large amounts of carbon dioxide huff and puff construction in this kind of reservoir.In this paper,through the analysis of Daqing peripheral oilfields in recent years of carbon dioxide huff and puff construction effect,and considering various factors,to identify the main factors influencing the construction effect.To provide the oretical reference for enterprises to improve carbon dioxide huff and puff construction method.