مدل تحلیلی بهبود تزریق چاه با استفاده از پیش فرآیند نانوسیم

In comparison of experimental effluent particles concentration history and permeability reduction results, the accuracy of analytical solutions and the proposed theory of nanoparticles affecting fines migration are validated. In addition, the suspended, attached, and strained particle concentration profiles along the 1-D model are compared to indicate the different transport phenomenon of fine particles with or without nanoparticles preflush. Permeability impairment and an associated increase of injection pressure drop (assuming a constant injection rate) are characterized using injection index. The performance of nanoparticles to reduce fines migration and improve well injectivity are evaluated using mitigation index. The analytical solutions explain well how effectively nanoparticles can prevent the decline of permeability and well injectivity through the fixation of mobile fine particles. In practice, the series of analytical solution and hypothesized theory in this paper provide simple and quantitative approach to evaluate and optimize performance of nanoparticles pre-flush to sustain well injectivity for diverse applications.