Study on Drilling Technique in Coal-bed by High Pressure Water Jet
Starting from the theory of high pressure water jet, the mechanism of coal breakage by high pressure water jet was studied, which indicated that tension, shearing, grinding etc. can work together to break coal. The appropriated parameters of the diameter of the jet nozzle, as well as the optimal structure and parameters of the drill bit were obtained through the combination of numerical analysis and experimental study. Based on this study, the equipments and technology of drilling in coal-bed by high pressure water jet were obtained. These equipments and technology had been tested in situ, and the initial success obtained. Subsequently, the potential problems of drilling in coal-bed by high pressure water jet were analyzed, the conclusions will lay a foundation for the future study in the region.
high pressure water jet drilling in coal-bed experimental study
LIANG Yunpei HU Qianting CHEN Jinhua ZHOU Weidong
College of Natural Resources and Environmental Engineering, Shandong University of Science and Techn College of Natural Resources and Environmental Engineering, Shandong University of Science and Techn Gas Department, Chongqing Branch of China Coal Research Institute, Chongqing 400037 College of Petroleum Engineering, University of petroleum, Dongying, Shandong257061
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
229-235
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）