Method and test system for determining sand pumping parameters based on width distribution of fracture

A method for determining sand pumping parameters based on a width distribution of a fracture, comprising the following steps:

• Step 1:
• using a plurality of sensors to acquire basic parameters of a target reservoir, using a test system to simulate a propagation of the fracture, and using the test system to obtain a propagation pattern and the width distribution of the fracture;
• Step 2:
• using the test system to determine a maximum proppant particle size for entering the fracture at all width levels according to statistical results of the width distribution of the fracture;
• Step 3:
• using the test system to determine a multi-size combination of proppants according to a mapping table for particle size vs mesh of the proppants, and determining an initial ratio of the proppants with each particle size based on a ratio of each fracture width;
• Step 4:
• using the test system to conduct a numerical simulation of proppant transportation in the fracture to determine a retention ratio of the proppants with each particle size;
• Step 5:
• using the test system to correct the initial ratio of the proppants with each particle size according to the retention ratio and obtaining a final ratio of the proppants with each particle size;
• and
• Step 6:
• using the test system to calculate an amount of the proppants with each particle size according to the final ratio and a sand pumping intensity and a fracturing interval length of the target reservoir, and using a display screen of the test system to display results of the amount of the proppants with each particle size and the propagation pattern of the fracture.