Shale Inhibitor PSH, a new type of high-performance water-base drilling fluid shale inhibitor of my company, is liquid polyamine. I acts as a clay hydration suppressant and provide excellent shale inhibition and cutting condition. Advantages prevent from hydration swelling, brittle shale from peeling off the wall and bit balling for its excellent inhibition. Excellent lubricant capacity, it can be applied to directional and horizontal wells; Resistant effectively to salt, calcium and magnesium and can be applied to fresh water, brine and sea water drilling &completion fluids; High temperature resistance, also used in deep well and ultra-deep wells; Non-poisonous, biodegradable and environmental friendly; Low freezing point makes it applied to cold area; It has a good cutting condition at the shakes during drilling. Technical Data Appearance Clear, colorless Liquid Density 1.05-1.2 Efficiency to Recover Shale Cuttings ≥90% pH ≥ 7