CHONGQING (CQNEWS) -- Chongqing University has worked out new multi-phase oscillation jet drilling, sewing and ant-reflection technology and multi-phase oscillation jet equipment with independent intellectual property right being widely promoted in more than 30 coal mines in Nantong Chongqing, Huayingshan Sichuan and Liuzhi Guizhou, according to Chongqing Development and Reform Commission on April 8, 2011.
Up to now, the multi-phase oscillation jet technology and equipment have been well applied in key coal bed gas control projects. The pre-extracted gas concentration and gas extraction volume have been respectively improved by 20 times and 15 times compared with the traditional technology, while the optimal period has been reduced by 30%-40%. (Translated by Tan Hongxia, Fathom Language Limited)
