The Research Of Sand Preventing After Fracturing To Polymer-flooding Producer

With the continuous development of polymer flooding, the sanding of polymer-flooding producer after fracturing, mainly about 20% of quartz sand spit back, became increasingly prominent. The sanding which not only reduced flow conductivity of chap, but also shortened the validity period of fracturing, seriously affected the course of oilfield development in the potential role of the adjustment and it was not conducive to the development of the overall effect of block. The sanding brought a range of engineering problems and increased operating costs in the follow-up.The sanding of polymer-flooding producer after fracturing has became a urgent practical problem to solve which troubled stimulation treatment of oilfield. To further optimize technology measures associated with the prevention of sand production after fracturing, the article, based on the systematic analysis of factors which affected the sanding of polymer-flooding producer after fracturing, essayed characteristics of formation sand production and compatibility of existing sand control technology, studied the relationship between the rate of different tailings and viscosity and flow rate of liquid by relationship experiments between sand and fluid to determine the fracturing parameters under different fluid characteristics, together with the radius of supporting anti-migration agent. We carried out sand prevention field test of polymer-flooding producer after fracturing and had an research on technology associated with the sand control of polymer-flooding producer to realize the purpose of sand control of polymer-flooding producer after fracturing and Production increase.