The development and characteristics of a drilling fluid microemulsionado the basis of glycerin.

摘要

The development and characteristics of a drilling fluid based microemulsionado glycerin the present invention refers to the composition of a drilling fluid system was developed on the basis of aEMA microemulsionado, comprising a mixture formed by three components: an aqueous phase (aqueous solution of glycerin), a phase in oil (vegetable oil) and a surfactant.The said composition, characterized as drilling fluid, presents proportions of volume of the aqueous phase which comprises at least 80% by weight of the total volume of the system microemulsionado,With proportions by volume of glycerin in the aqueous phase comprising 50% to 80% of the total volume of the aqueous phase; presents proportions by volume of oily phase comprising at least 30% by the weight of theThe total volume of the system microemulsionado; and proportions by volume of tensativo which comprises from 20% to 95% of the total volume of the system microemulsionado.In addition, are added to the system microemulsionado additives has physical and chemical characteristics and rheological of a fluid drilling.The drilling fluid to the base of the microemulsion of this invention has utilization efficiency with high tolerance to contamination by salt.High viscosity using a reduced amount of viscosificante, low loss of the filtrate, satisfactory performance at elevated temperatures.High stability and low toxicity to the environment.