The invention relates to a high-displacement high-concentration
polymer dry powder direct distribution variable-
viscosity fracturing fluid device and process, and belongs to the technical field of
polymer fluid preparation and
dissolution quality control. The process comprises the steps that S1, a main process pipeline
system is constructed, and a mixing feeding
assembly, a shearing dispersion
assembly and an online optical detection
assembly are sequentially arranged in the flow direction of fluid; a rheodynamic
control algorithm is executed in cooperation with the control and operation unit; s2, obtaining the net
viscous resistance moment of fluid acting on the high-speed rotor, and correcting the net
viscous resistance moment into the real hydration
characteristic viscosity influenced by the decoupling rotating speed; s3, constructing a hydration evolution model and monitoring the
dissolution mass to represent the proportion of undissolved particles in the fluid; s4, deducing the stable
viscosity of the fluid reaching the
front edge of a fracturing crack through a well bottom hole, and carrying out differential adjustment on the shearing rotating speed, the method overcomes the reading deviation caused by equipment friction and rotating speed fluctuation in traditional measurement, and ensures the accuracy of judgment of the expansion degree of the
polymer molecular chain.