Abstract
In the process of hydraulic jet fracturing and perforation, fracturing fluid carrying sand is injected through annulus to fracture the pay zone. The numerical simulation analysis with the software of ANSYS-Fluent was applied aiming at the problem of low quality of fracturing fluid through the nozzle jet. By means of the analysis and comparison to some important structural parameters of the nozzle, the optimum jet quality through the nozzle was obtained. The research results showed. When the nozzle outlet diameter is from 4.5mm to 4.8mm; the length of the column is from 7mm to 12mm and the inlet radius of curvature is 9mm, the optimum jet quality of the nozzle can be obtained. The jet quality through the nozzle can be improved effectively through the analysis and optimization of the structure of the nozzle, which provides effective technical support for the hydraulic jet fracturing technology.
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