Warning: include(static/qqimg/class.php) [function.include]: failed to open stream: No such file or directory in /www/users/HA200025/WEB/system/common.inc.php on line 17

Warning: include() [function.include]: Failed opening 'static/qqimg/class.php' for inclusion (include_path='.:/usr/local/zend/lib/php') in /www/users/HA200025/WEB/system/common.inc.php on line 17
 coal seam gas_information search-Oilfield Downhole tools,packer,bridge plug Suppliers - Puyang Kerui Mechanical engineering technology Co., Ltd.
home > about coal seam gas information:

  • belongs:【Casestime:2012ear 11onth 21ay
    Vacuum return sand pump is successfully applied to 48 wellsShanxi Fanzhuang area of Hubei oilfieldJuly 2011 to April 2012. The time of operation is decreased5-8 to 1., while the coal powder, coal dustquartz sand are fished out. Reduce the time of column u
总计:1条 每页20条 当前第:1页 首页 上一页 下一页 尾页