Ashland Aqualon Functional Ingredients' straight guar is used as a gellant to produce high, cross-linked viscosity in oil and gas drilling fracturing fluids -- it is produced from natural guar without involving any chemical modification. The resulting, crosslinked fluids have excellent carrying capacity to support proppants for the created fracturing area of oil or gas wells. Guar derivatives can be used in low-solids drilling fluids as a viscosifier and fluid loss reducer in both freshwater and brines -- and are particularly effective in spud muds.
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