| 高能射流式液动锤在花岗岩中的钻进研究 |
| 投稿时间：2016-01-30 修订日期：2016-05-27 点此下载全文 |
| 引用本文：孙强,杨冬冬,彭枧明,等.高能射流式液动锤在花岗岩中的钻进研究[J].钻探工程,2016,43(8):39-43.SUN Qiang,YANG Dong-dong,PENG Jian-ming,et al. Experimental Research on High Energy Liquid-jet Hammer in Granite Drilling[J]. Drilling Engineering, 2016,43(8):39-43. |
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| 基金项目:国土资源部公益性行业科研专项项目“干热岩快速钻井用高压高能射流式液动锤研究”（编号：201311112） |
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| 中文摘要:由于干热岩地层通常为火成岩，研磨性强、可钻性差，现有常规工艺方法钻进效率低，为此专门研制了用于干热岩钻进用的SC-86H型高能射流式液动锤，并对该高能射流式液动锤样机进行了地面钻进试验。试验采用可钻性等级为10级的完整花岗岩作为钻进对象，观测了冲锤质量、活塞行程和泵量对机械钻速的影响。试验结果表明：增大冲锤质量、活塞行程和泵量有利于提高机械钻速。试验过程中获得的最大机械钻速为5.19 m/h，较常规回转钻进机械钻速提升显著。 |
| 中文关键词:干热岩 钻进 可钻性 花岗岩 高能 射流式液动锤 机械钻速 |
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| Experimental Research on High Energy Liquid-jet Hammer in Granite Drilling |
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| Abstract:Hot dry rock strata usually are of igneous rocks with strong abrasion and poor drillability. Because of the low drilling efficiency of conventional drilling methods, SC-86H high energy liquid-jet hammer was specially developed for hot dry rock strata drilling, and the ground drilling tests were carried out on the prototype. Intact granite with drillability of grade X was taken as simulation strata, the effects of hammer mass, piston stroke and inputting flow rate on the drilling efficiency were studied. The test results show that increasing the hammer mass, piston stroke and inputting flow rate are beneficial to improve the drilling efficiency. The maximum ROP obtained in the tests is 5.19m/h, which is significantly more than that of conventional rotary drilling machines. |
| keywords:hot dry rock drilling drillability granite high energy liquid-jet hammer rate of penetration |
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