Temporary plugging fracturing process method of multi-density temporary plugging ball combination

The invention discloses a multi-density temporary plugging ball combined temporary plugging fracturing process method, which is characterized in that temporary plugging balls with different densities and different numbers are designed according to the density of designed fracturing fluid and a reservoir transformation target. Setting the density of the fracturing fluid as rho kg/m < 3 >, taking the density of the fracturing fluid as a reference, defining that the density of the temporary plugging balls is higher than the density of the fracturing fluid as high density, and respectively preparing a certain number of temporary plugging balls with different densities such as high density, medium density and low density to plug lower, middle and upper perforations. When temporary plugging fracturing construction operation is carried out, multiple temporary plugging ball combinations with different densities are thrown, and the specific combination modes include the same density mode, the high-low density mode, th