| Occupy a large proportion of low-permeability oil fields in China, Hydraulic InjectionRadial Drilling Technology can increase the area of the drain of the original borehole, have agreat significance for Low-permeability oil fields yield, by Note, increase the ultimaterecovery of oil field Hydraulic Injection Radial Drilling Technology is used by hydraulic rockdrill principle of high pressure water jet. Use of small diameter and high pressure hose sentnozzle,the impact of high-speed high-pressure water rock through the front nozzle jet,recoilforce to promote the nozzle self into the high-pressure water through the back of spray nozzle,open an aperture large, deep hole, similar to the small horizontal well drilling in the radialrocks,can effectively increase the oil production. On the basis of extensive literature survey,Rsearch of the process principle of Hydraulic Injection Radial Drilling Technology, Nozzlestructure parameter optimization settings is the core question for the impact of the smoothconduct of Hydraulic Injection Radial Drilling Technology. Under the theoretical guidance,analysis of the nozzle structure parameters for the Influence of flow field characteristics bynumerical simulation. Through theoretical calculations, find the effect of the nozzle diameter,number of holes, installation angle, and the external pressure, flow to the propulsion. Thefinal design of the nozzle structure parameter optimization program.combined with the resultsof numerical simulations and theoretical calculations.The results show that under the theorye guidance,It is feasible by numerical simulationand theoretical calculation of structural parameters on the nozzle optimization settings.However, due to the rock material from different rock，it is not applies.for each nozzle，Therefore, in the specific application need to determine the actual situation of rock. |
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