Directional drilling 1,2 has been widely used in coal seam gas extraction, water exploration, and geological prospecting during mine pre-water exploration. Due to the long drilling distances and ...
Based on “Improved Drilling Operations and Wired Drill Pipe and Along-String Measurements – Learning and Highlights from Multiple North Sea Deployments,” SPE/IADC-204029-MS, SPE/IADC International ...
Coal seam gas extraction is an important link in the process of coal mining, and the drilling depth plays a vital role in improving the efficiency of gas extraction and reducing the safety hazard 1.
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