Hydra XW is used for crosslinking of polysaccharide linear gel on the basis of guar and its derivatives with time lap from 10 to 30 seconds. It provides even crosslinking of linear gel without lumps or clogs.
Hydra XW-1 is a high-alkali fast-acting crosslinker and can be used at formation temperatures up to 120˚С.
Hydra XW-2 is a fast-acting crosslinker for operation at formation temperatures up to 60 ˚С. In addition, Hydra XW-2 can be used as additive improving shear properties of crosslinked gel at temperatures up to 120 ˚С.
Recommended concentration of Hydra XW-1 in frac fluids should be from 1.0 до 2.0 l/m³, the one of Hydra XW-2 - from 2.0 to 4.0 l/ m³. The gel, obtained with the use of this crosslinker, has good thermal stability in the range of temperatures from 20 to 80°С. It is recommended to conduct laboratory tests for specific well conditions.