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Spiral sand bailing pen point capable of improving sand bailing efficiency
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Year of Publication 03.07.2020
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Two coal seam U moulded coal layers gas well well bore structure
CHANG LINGXIAO, QIN HUI, MIAO YUANYUAN, LI FENG, FAN LISHA, WANG XUEQING, HE QINGHONG, GUO SHENGQIANG
Year of Publication 10.08.2018
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Year of Publication 10.08.2018
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Double-coal-seam U-type coal-bed gas well construction method
CHANG LINGXIAO, QIN HUI, MIAO YUANYUAN, LI FENG, FAN LISHA, WANG XUEQING, HE QINGHONG, GUO SHENGQIANG
Year of Publication 29.05.2018
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Year of Publication 29.05.2018
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Method for mining coal seam gas
WANG BAOYU, TIAN YONGDONG, CHANG LINGXIAO, ZHANG YONGCHENG, ZHANG DIANKUN, LI SHENGQI, BAI JIANPING, JIN KEKE, ZHAO ZHIYOU, WANG FENGQING
Year of Publication 18.07.2012
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Year of Publication 18.07.2012
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