Experimental Study On The Application Of Compound Fracturing Fluid To Improve The Permeability Recovery In G Block Of Daqing Oilfield

In recent years,with the development of fracturing fluid technology and perfect,guanidine gum,synthetic polymer and surfactant fracturing fluid technology mature,the basic and applied in the case of specific reservoir needs.Fracturing fluid diversity technology adaptability to dense oil reservoir,and to realize the use of recycled and fracturing fluid is satisfy the fracturing fluid technology requirements and control the cost of the decisive factor,low damage,such as low cost,high efficiency,environmental protection technical indexes is the development direction of fracturing fluid.Spontaneous infiltration mechanism of oil displacement is an important production of fracture reservoir absorption,the experiment systematically studied between oil and water seepage mechanism of absorption,dense reservoir liquid core ability through the system research,we will further improve the density of reservoir seepage theory and related understanding,for dense oil reservoir by fracturing fluid and reasonable development way,the method of enhancing oil recovery improvement opinions are put forward.At the same time,it is proposed to blindly pursue ultra-low interfacial tension,which is one-sided and reduces the interfacial tension.Through the performance evaluation of surface active agent,compound fracturing fluid system,screening of dense oil reservoir recovery efficiency can be improved compound fracturing fluid system,and its reservoir adaptability were analyzed,and finally improve the purpose of the dense oil reservoir recovery efficiency are obtained.