Application of low concentration guar gum crosslinking agent(HK-8)in Yanchang Oilfield

Low concentrations of guar gum crosslinking agent(HK-8)can be extended in the formation fracturing fluid temperature guar gum concentration from 0.38% to 0.28%; application of low concentrations of guar gum crosslinking agent(HK-8)of the fracturing fluid has as good as the original recipe sand carrying properties,temperature shear resistance and broken plastic properties, can reduce the formation damage rate of more than50%; field trials proved that low concentrations of guar gum crosslinking agent(HK-8)can be replaced by organic boron crosslinker, to meet the requirements of fracturing.