Southwest Petroleum University

Yezhong Wang

Yang Liu

Tianshou Ma

Xingyun Xiang

Sitong Chen

Yingjie Chen

Gui Wang

Pei Zhang

Lei Gao

Disclosed is a fracture plugging simulation experimental device and an experimental method thereof. The device comprises a simulated wellbore, a simulated formation, a simulated fracture, a plurality of pressure sensors and vales, a mixing barrel, a liquid injection port and a pressurization port, a liquid collection tank, a plugging fluid storage tank, a heating device, etc. The method comprises: loading the simulated formation with the simulated fracture in the simulated wellbore, closing the second valve and turning on the mixing device, injecting a lost circulation material into the mixing barrel, closing the liquid injection port and turning on the heating device and pressurizing, stopping pressurizing and opening the second valve to establish a plugging process, turning on the plunger pump to continue pressurizing, and collecting a fluid pressure change of the simulated fracture in the plugging process; and calculating a pressure-bearing capacity of plugged fracture.

Fracture plugging simulation experimental device and experimental method thereof

Disclosed is a system for optimizing a particle size distribution of a lost circulation material. The system comprises a data acquisition module, a communication module, an experimental module, a particle size distribution optimization module, and a plugging and filling module. The data acquisition module is configured to obtain a target feature particle size. The experimental module is configured to obtain the target feature particle size, and set a plurality of experimental schemes for fracture plugging; conduct fracture plugging experiments to obtain experimental results; evaluate a plurality of fracture plugging effects of each of the plurality of experimental schemes. The particle size distribution optimization module is configured to obtain the plurality of fracture plugging effects, determine a particle size distribution rule, and obtain optimized particle size distribution data by optimizing the particle size distribution of the lost circulation material. The plugging and filling module is configured to perform a plugging operation.

System for optimizing particle size distribution of lost circulation materials

Growing community of inventors

Chengdu, China

Yezhong Wang