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19
2019-11
Principle of Directional Drilling Technology of Kilometer Drilling Rig
Principle of Kilometer Directional Drill Drilling Technology
2019-11-19
11
2019-11
New technology of beneficial mining technology-reverse circulation dust fixed-point sampling device
The reverse circulation dust fixed-point sampling device adopts advanced multi-stage ejection technology in accordance with the sampling requirements specified in GB/T23250 "Direct Determination Method of Coal Seam Gas Content Downhole" and "Detailed Rules for Prevention and Control of Coal and Gas Outburst" to realize fixed-point sampling while drilling without withdrawing drill pipe, and can realize fast fixed-point sampling at any point within 100m or more of the coal seam within 20 minutes. It is a complete set of equipment with advanced concept and high sampling success rate in China. Our company has applied for patent technology. This process is mainly used for sampling measurement in dust monitoring process, pre-drilling and post-reverse circulation sampling of coal powder gas content and fixed-point dust sampling.
2019-11-11
10
2019-11
10
2019-11
