Special rheological auxiliary agent for clean fracturing fluid

The invention discloses a special rheological auxiliary agent for a clean fracturing fluid. The special rheological auxiliary agent for the clean fracturing fluid comprises the following components, in parts by weight: 2-4 parts of octylphenol ether, 3-5 parts of a modifier, 4-8 parts of a temperature-resistant enhancing agent, 5-7 parts of a cosolvent, 20-30 parts of a biological enzyme gel breaker galactomannanase solution, 3-7 parts of hydroxyalkyl chitosan, 2-6 parts of oktakis(tetramethylammonium)-T8-silisesquioxane, 3-6 parts of N-dimethyl-N-propylsulfonic acid betaine, 2-8 parts of cis-docosa-9-enoic acid amido propyl, and 3-9 parts of N-dimethyl carboxylic acid betaine. According to the solution provided by the invention, through the interaction of the above raw materials, the special rheological auxiliary agent with good quality for the clean fracturing fluid can be prepared, and the anti-freezing property, shear resistance and solubility of the rheological auxiliary agent areimproved; and through a