Fracturing fluid in-seam drag reduction performance testing device and method based on flow field testing

The invention discloses a fracturing fluid in-seam drag reduction performance testing device and method based on flow field testing, and belongs to the technical field of testing of the resistance reduction performance in the fracturing fluid seams. The device comprises a liquid preparation tank, a visualized crack plate device, a drive pump, a laser transmitter, a camera; and a processing unit which is used for comparing the first average vorticity field data S (i, j, k) of the fracturing fluid in all query areas of a j test area under Qi with the second average vorticity field data T (i, j, k) of clear water in all query areas of the j test area under Qi, and calculating the drag reduction rate D (i, j) of the fracturing fluid in the j test area under Qi; and the arithmetic mean value of the p*m resistance reduction rates is calculated, and the calculated resistance reduction rate D of the fracturing fluid is obtained. The invention further discloses a fracturing fluid in-seam drag reduction performance tes