Evaluation of new fracturing fluid system

The studies of new fracturing fluid are carried out in order to take the place of guar gum due to increasing cost. Based on the comprehensive evaluation of fracturing fluid system of modified xanthan gum and high polymer, the laboratory recipes of fracturing fluid of modified xanthan gum slippery water and high polymer are proposed. The fracturing fluid of modified xanthan gum has some shortcomings such as poor resistance for high temperature and long-time shearing and high content of glue residue. The fracturing fluid of high polymer is in high content of thickener, and it is difficult to balance delayed cross-linking performance and high temperature performance. The new fracturing fluid system can be applied in field works after further improvement.