Research on Performance of High-temperature High-density Oil-based Drilling Fluids

The oil-gas exploitation techniques of super-deep formations in West China are facing a great challenge. Due to the super-high temperature, high pressure, salt formation, it brings enormous challenge to drilling engineering. To meet the need of drilling operation in the super-deep formations, a new kind of high-temperature high-density oil-based drilling fluid system is developed. This oil-based drilling fluid system has excellent comprehensive properties, and it could resolve the contradiction between safety drilling of complicated deep wells and formation complexity.