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首页> 外文期刊>The electronic journal of geotechnical engineering >Design and Application of Multiple Swirling Jet Nozzle in Radial Horizontal Well
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Design and Application of Multiple Swirling Jet Nozzle in Radial Horizontal Well

机译：径向水平井多旋流喷头的设计与应用

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Depending on the jet nozzle which can break rock efficiently in the coal-bed methane formation, the radial horizontal well technology can form several horizontal holes with a certain diameter and length and it can increase the exposed area and improve the production of single CBM well. In order to solve the problem that the jet nozzle can’t achieve the goal of horizontal holes with large diameter and deep depth simultaneously, the multiple swirling jet nozzle with simple structure was designed. The outflow field of nozzle was simulated by SIMPLEC algorithm firstly, then the outflow field feature was analyzed. The influence law of radius of setting circle, tangential angle and inclined angle on the rock breaking effect were studied by single factor indoor experiments, and reasonable parameter combination was optimized by comprehensive rock breaking test. Preferable CBM field application effect had been achieved in Qinshui Basin of Shanxi and this also could illustrate the value of multiple swirling jet nozzle.
机译：依靠能在煤层气中有效破碎岩石的射流喷嘴，径向水平井技术可以形成若干具有一定直径和长度的水平井，可以增加裸露面积，提高单煤层气井的产量。为了解决喷嘴不能同时达到大直径，深深度的水平孔的问题，设计了结构简单的多旋流喷嘴。首先用SIMPLEC算法模拟了喷嘴的出流场，然后分析了出流场特征。通过单因素室内试验研究了落石半径，切向角和倾斜角对破碎效果的影响规律，并通过综合破碎试验优化了合理的参数组合。山西沁水盆地取得了良好的煤层气田间应用效果，这也可以说明多次旋流喷嘴的价值。

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