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喷射-由引擎发动的旋喷

84 bytes removed, 09:11, 19 October 2015
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|[[Image:Rotary rig in Chad.jpg|thumb|none|200px|Rotary rig in Chad|在乍得使用旋转钻机]]|[[Image:Self made rotary rig.jpg|thumb|none|200px|Self made rotary rig|自制旋转钻机]]|[[Image:Diagram of the LS100.jpg|thumb|none|200px|Diagram of the LS100|LS100的示意图]]|[[Image:PAT drill 201.jpg|thumb|none|200px|PAT drill 201|PAT 钻机 201]]
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===Suitable conditions 适宜条件 ===Suitable for weakly cohesive sands and silts. 适合泥沙黏度低的地方。
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! width="50%" style="background:#efefef;" | Advantages优势! style="background:#f0f8ff;" | Disadvantages劣势
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| valign="top" | - Better performance with regard to ergonomic aspects than manual jetting rigs在人类工程学方面的表现比人工钻井设备更胜一筹| valign="top" | - Does not increase speed or depth as compared to manual operate rotary jetting rigs. 并未提高速度或增加深度
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[[File: Drilling Method Selection.jpg|thumb|none|750px|This table may be used as a guide in the selection of the most appropriate drilling methods该图表可用来帮助选择最适合的钻井方法. Credit图片来源: WEDC.]]
===Construction, operations and maintenance建造、运作和维护===A self made engine-driven rotary rig is not very difficult to make, although drill bits, drill pipes and engine may have to be specially imported.自己制作由引擎发动的旋转钻井设备并不难,但是钻头、钻管和引擎可能需要专门进口。
===Costs费用===The price of these rigs depends and varies between US$ 3000 and US$ 5000. 这些钻井设备的造价在3000美元到5000美元之间。
===Field experiences实地经验===Engine operated rotary jetting is mainly used in Thailand, Laos, Cambodia, Chad, Niger, Nigeria, Burkina Faso, Tanzania, Mozambique, Zambia, Mauritania, Madagascar and Nicaragua.使用由引擎发动的旋转喷射的国家主要有泰国、老挝、柬埔寨、乍得、尼日尔、尼日利亚、布基纳法索、坦桑尼亚、莫桑比克、赞比亚、毛里塔尼亚、马达加斯加和尼加拉瓜。
===Manuals, videos and links指南、视频和链接===* [http://www.pat-drill.com PAT-Drill] - Engine powered drilling equipment and small machines. 由引擎发动的钻井设备和小型机器 * [http://www.lonestarbit.com Lone Star Bit] - Engine powered drilling equipment and small machines.由引擎发动的钻井设备和小型机器* [http://www.deeprock.com Deep Rock] - Engine powered drilling equipment and small machines.由引擎发动的钻井设备和小型机器* [http://www.drillingfab.com Drillingfab] - Engine powered drilling equipment and small machines.由引擎发动的钻井设备和小型机器
===Acknowledgements鸣谢===* [http://www.lboro.ac.uk/well/resources/technical-briefs/43-simple-drilling-methods.pdf 43. Simple drilling methods|简易钻井方法.] WEDC.
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