This paper provided basis for application of rotary abrasive jet in drilling radial horizontal Wells.
该试验研究为磨料旋转射流应用于径向水平钻井提供了基础。
As one of radial horizontal drilling techniques, high pressure water jet drilling technology is capable of using mechanical or water jet apparatus to make a cavity at the selected coal seam.
高压水射流径向水平孔钻进技术是水平孔施工技术之一，它是在垂直瓦斯抽放或煤层气勘探钻孔布置机械或水力扩孔装置，对准选定的煤层部位进行扩孔。
The equations of the density function of residence time distribution, the axial growth of the velocity half - radius, the axial decay of radial maximum jet ve...
给出了停留时间分布密度函数、无因次半速度半径轴向增长、径向射流最大速度轴向衰减和径向速度分布计算公式。
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