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Drilling Fluid Grade – An important characteristic of Gilsonit is its softening-point temperature. In oil-base muds. It use as fluid-loss control agent because it`s hydrocarbon properties. It`s naturally wetted by oil. In water base mud, it is used as a shale-stabilizer additive and is difficult to evaluate unless tested at or above its softening point. As a hydrocarbon, powder must be coupled to water by using a glycol or similar water-wetter. commercial@pub-ltd.com