Experimental Study on Optimization of Fracturing Fluid in Offshore Low Permeability Gas Reservoir
In the face of the unfavorable conditions of large working area,sparse wells and strong heterogeneity in the East China Sea target area,combined with the existing fracturing methods,the control variable method is used to determine the drag reduction performance,surface tension,anti-swelling performance,rheological properties,compatibility of gel breaking fluid,demulsification rate of gel breaking fluid and damage evaluation of fracturing fluid for different fracturing fluid formulation systems,and the fracturing fluid formulation system suitable for low permeability gas reservoirs is optimized.According to the experimental results,0.54%hydroxypropyl guar gum and 0.1%cleanup additive A and 0.1%cleanup additive B and 0.05%clay stabilizer A and 0.1%clay stabilizer B and 0.1%pH regulator and 0.24%high temperature gel breaker A was selected as the best fracturing fluid formulation system for East China Sea A gas reservoir.
low permeability-tight sandstone gas reservoirfracturing fluid systemfracturing fluid damagewettability after pressingcontrol variable method
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