Development and Application of a Oligomeric Emulsifier with High-Temperature Resistant
摘要
The main technical challenge of drilling fluid in deep oil and gas drilling is that the treatment agent fails at high temperatures. The shortcomings of emulsifiers used in oil-based drilling fluids under high temperature conditions included high dosage and susceptibility to failure. An oligomeric emulsifier SSRH-1 with high temperature resistant was prepared through the reaction of organic acids and organic amines and the product yield exceeded 93%. Using SSRH-1, a high temperature oil base drilling fluid was formulated with organophilic clay, xc. The density of this oil base drilling fluid was adjustable between 1.2 and 2.1 g/cm3. The oil base drilling fluid had the characteristics of good rheological performance and low filtration rate at 220°C.