COMPOSITION AND USE THEREOF, OIL-BASED DRILLING FLUID AND A METHOD FOR RAISING SHEARING FORCE OF OIL-BASED DRILLING FLUID

摘要

A composition and use thereof are disclosed herein. The composition comprises at least two selected from the group of amphiphilic block copolymer, polyurethane and acidic ionic compound. Also an oil-based drilling fluid comprising the composition and a method improving shearing force of oil-based drilling fluid are disclosed. The composition disclosed herewith can raise the shearing force of oil-based drilling fluid.