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从电化学加工的角度对国外正流式电化学射孔器和新研制的侧流式电化学射孔器的结构特点做了分析和比较。针对侧流式射孔器在射孔过程中加工区局部出现死水区的缺点 ,对其阴极流场设计做了改进 :将通液槽由平底改为中间高两端槽口低的凸起曲面 ,中间凸起处为阴极加工面。有一定起伏坡度的通液槽对加工区起引流作用 ,从而改善该处的液流状况。在对比试验中 ,原阴极流场加工 3 6min未打通孔 ,改进后仅用 5min即打通。还做了 2次打 2 0孔的试验 ,打通率均在 90 %以上。试验证明侧流式射孔器在地面条件下是可行的 ,但要应用到井下还需进一步研究。
From the perspective of electrochemical machining, the structure characteristics of foreign positive-flow electrochemical perforators and newly developed side-flow electrochemical perforators were analyzed and compared. Aiming at the shortcomings that the side-flow perforator has a dead zone in the processing area during the perforation process, the design of the cathode flow field is improved. The convexity surface , The middle convex at the cathode processing surface. There is a certain degree of ups and downs through the groove on the processing zone drainage, thereby improving the flow of liquid conditions. In the comparative test, the original cathode flow processing 36min did not hit the hole, improved after only 5min that is open. Also made 2 times hit 20 hole test, get through rates are above 90%. Experiments show that side-flow perforators are feasible under the ground conditions, but further research is needed to be applied to the well.