JSL-30型钻机钻进参数检测系统的研究

钻进参数检测对钻进参数优化、钻机设计、钻进工艺研究具有重要作用.结合JSL-30型钻机结构和工作原理,研制了适用于振动条件下的钻进参数检测系统.经检验,检测数据准确可靠.     

潜孔锤同心跟管钻具零件强度分析与研究

介绍了适合卵砾石地层地震勘探孔施工用的潜孔锤同心跟管钻具的结构和工作原理。针对钻具使用中出现的套管螺纹和内外钻头冲击面强度低、寿命短的问题,采用有限元方法对钻具的零件进行了强度分析,并提出了提高套管螺纹和内外钻头寿命的方法。      

Research achievements and application in anaerobic treatment of organic solid wastes—— A review

1 IntroductionSolid wastes (SW) refer to all the wastes derivedfrom human and animal activities, which are normallysolid and are discarded as useless or unwanted (Juha-Heikki Tanskanen, 2000 ). Generally, the organicfraction accounts for more than 50% -60…