气动潜孔锤钻进井口密封除尘装置研发与应用

Development and application of wellhead sealing dust removal device in pneumatic DTH drilling

通过介绍气动潜孔锤钻进工艺的特点以及对环境、工人健康带来的污染和危害,说明了潜孔锤钻进时进行除尘密封的必要性,阐述了井口密封除尘装置的功能、结构、工作原理、密封原理、技术参数、试验效果。实验表明:研发的井口密封除尘装置能够很好地解决使用四方主动钻杆进行气动潜孔锤钻进时的粉尘污染问题,密封效果达95%以上。

By introducing the characteristics of pneumatic DTH drilling technology as well as the pollution and harm to environment and workers in the drilling,the necessity of wellhead sealing dust removal in pneumatic DTH drilling was illustrated,and the function,structure,working principle,sealing principle,technical parameters and test effect of the wellhead sealing dust removal device were expounded. The experimental result shows that the wellhead sealing dust removal device can well solve the problem of dust pollution in the pneumatic DTH drilling with square kelly,and the sealing effect is above 95%.