A good way to help you to improve drilling technique is to use a jet chunk.

能支持你们校正钻井技术的一种好方法是利用放射式钻头。

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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。

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The equipment applies high voltage jet drilling process, with characteristics of high drilling efficiency , simple structural drilling tool and reasonable design.

该设备采用高压射流钻井工艺，具有钻进效率高、钻具结构简单、设计合理等特点。在两次现场试验中，成功地实钻了三眼定向孔。

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From engine overhauls, to drilling out rivets to fixing faulty flaps, Boeing and Airbus-made passenger jet repairs are increasingly being done in third-world countries.

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So, for example, at the announcement where I talked about offshore drilling, I did so in front of an F-18, a fighter jet, that is actually going to be run half on biomass.

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