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  • 2017 Yilong successfully developed Peru market.
  • 2017 Yilong successfully completed the first high sulfur horizontal well production logging operation in the world.
  • 2017 Yilong successfully completed the four kinds of abandoned well operation with the highest level of operation difficulty in the world for Shell.
  • 2016 Yilong successfully developed Algerian workover market.
  • 2016 Yilong and Shell performed in-depth cooperation in Sichuan abandoned well project.
  • 2016 Yilong successfully developed Kazakhstan coiled tubing acid fracturing market.
  • 2016 Yilong completed the first highly difficult Type II abandoned well operation in the world.
  • 2015 Yilong completed the first successful domestic application of built-in coiled tubing completion string technology.
  • 2014 Longyuan Hengtong Petroleum Technology Co. Ltd., a joint venture company formed by Tong Oil ToolsCompany (China Stock Code 300164) and Beijing YilongHengye, to further expand overseas business.
  • 2013 Dragon Oil Technologies was registered in US and put into successful operation.
  • 2013 Yilong entered into the SiChuan, Northwest Bureau. Tarim Oilfield and Xinjiang Oilfield Market .
  • 2012 Yilong started overseas oilfield services in Kazakhstan and Myanmar, the Middle East, Africa.
  • 2011 Yilong entered into Yanchang, SinopecJianghan, Sinopec Nanyang and Sinopec East China.
  • 2010 Yilong entered into Sinopec Shengli, Jiangsu and PetroChina Changqing.
  • 2009 Yilong entered into Sinopec Northeast.
  • 2008 Yilong entered into Sinopec North China.
  • 2006 Yilong entered into Sinopec Puguang.
  • 2005 Yilong entered into Sinopec Zhongyuan .
  • 2005 Yilong was founded in Beijing.