纳米SiO2/酚醛树脂复合材料裂纹扩展行为分析及力学性能研究.

Sand production in Wells is the main contradiction facing the explo让ation of unconsolidated sandstone oil and gas reservoirs・ Resin consolidated artificial wellbore is the most widely used chemical sand control method in oil fields at present because of its excellent effect on fine sand control, which can achieve screen-free sand control under complex well conditions ・ The extended finite element method (XFEM) was used to simulate the crack passing through a single particle, a pair of particles and a plurality of evenly distributed particles, and the influence of nanoparticles on the crack growth path and damage dissipation energy was studied・ It was found that the influence range of nano-SiO2 on the crack was 5 nanoparticle diameters, and the best mass fraction of nano-SiO2 was 3% of the resin matrix. The results of measuring the impact strength of resin spline and the compressive strength of resin sand control body show that when the mass fraction of nano-SiO2 is 3%, the impact strength of resin spline increases about 39% and the compressive strength of resin sand control body increases about 36%, which significantly improves the mechanical properties of phenolic resin. [ABSTRACT FROM AUTHOR]