Fluidos de Perfuração e Colchões Lavadores: Uma Revisão da Literatura

Abstract

To improve the efficiency of oil well drilling, new technologies supplied are being developed for drilling fluids and preflushes, aiming, in addition to performance, low cost and lower environmental risk. Based on this, this article offers a complete review of drilling fluids and preflushes, changes to the main concepts that are taken into their formulations, and the evolution of technologies regarding these fluids. In this scenario, the following stand out: the use of microemulsified systems for sources of drilling fluids and preflushes with biodegradable characteristics; the different types of nanoparticles with the potential to be used as additives in drilling fluids, capable of improving the rheological characteristics of the mud, which can be known in high pressure and high temperature systems; the study of nanoemulsions to be used in preflushes, with the advantage of presenting a smaller amount of surfactant when compared to microemulsions.