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关于支柱法天井防尘问题之浅见
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作者 邓子香 李运华 《劳动保护科学技术》 1990年第6期32-36,共5页
关键词 支柱法 天井作业 防尘 矿山 粉尘
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A review of light amplification by stimulated emission of radiation in oil and gas well drilling 被引量:4
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作者 OLALEYE B M 《Mining Science and Technology》 EI CAS 2010年第5期752-757,共6页
The prospect of employing Light Amplification by Stimulated Emission of Radiation(LASER) for well drilling in oil and gas industry was examined.In this work,the experimental works carried out on various oil well drill... The prospect of employing Light Amplification by Stimulated Emission of Radiation(LASER) for well drilling in oil and gas industry was examined.In this work,the experimental works carried out on various oil well drilling operations was discussed.The results show that,LASER or LASER-aided oil and gas well drilling has many potential advantages over conventional rotary drilling,including high penetration rate,reduction or elimination of tripping,casing,bit costs,enhanced well control,as well as perforating and side-tracking capabilities.The investigation also reveals that modern infrared LASERs have a higher rate of rock cuttings removal than that of conventional rotary drilling and flame-jet spallation.It also reveals that LASER can destroy rock without damaging formation permeability but rather,it enhances or improves permeability and that permeability and porosity increases in all rock types.The paper has therefore provided more knowledge on the potential value to drilling operations and techniques using LASER. 展开更多
关键词 LASER OIL GAS well drilling simulation specific energy SPALLATION
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