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2022 Yilong has completed the fracturing construction of the first offshore shale oil well in the western South China Sea of CNOOC.
2021 Yilong completed the construction of the first Snubbing pilot well in the western South China Sea of CNOOC, setting a new record for the highest displacement of offshore fracturing rate recording in China.
2020 Yilong cooperates with CNOOC for the first time to provide offshore operation services.
2019 Yilong became A-level contractor of Chevron.
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 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.