Since early 2000, exploration for oil had been well underway in the
Tarim basin region where the Wushi sag and Wensu uplift are located. Research by the Petro China institute for oil exploration had found that the compression anticlines that had formed during the late Himalayan tectonic movement had made the Wushi sag a favorable site for petroleum accumulation. In 2010, CNOOC started to auction oil blocks in the Wushi basin to national as well as international companies when a total of thirteen oil blocks were auctioned for joint development. Block 23/07 lying in the Wushi Sag and partly on Qixi Massif of Beibuwan Basin was auctioned in 2010 to foreign companies who wanted to develop it jointly with CNOOC. This was the first batch of open blocks in China being auctioned to foreign companies. In 2011, Block 23/08 lying in the western part of the Wushi sag in a depth of 15 to 30m and covering an area of 1,210 square kilometers was auctioned. By then, Two wells had already been drilled in this block. As further exploration was undertaken in the region, the first commercial discovery of Wushi 17-2 was made in Wushi Sag in the Western part of South China Sea. In 2014, CNOOC made a further appraisal of Wushi 17-2 which was declared "mid-sized oil and gas structure". In 2016, CNOOC and the Zhanjiang government allocated 63 billion yuan ($9.2 billion) for projects around Zhanjiang during the 13th Five-Year Plan period (2016–20). This includes the Wushi 17-2 oil field in Wushi Sag, Wushi oil field. The Wushi oil field project is the first oilfield under Zhanjiang's administration and also Guangdong's first offshore oil and gas field in shallow waters. Phase 1 of the technical proposal passed review in February 2016 and the
environmental impact assessment received the national government's approval in 2017. Zhanjiang city and Wushi oil field are expected to be part of China's
Belt and Road Initiative and is expected to provide clean energy to the residents of Guangdong. Though traditionally, oil companies assign code names to offshore prospects early in the exploration effort to help ensure secrecy, Wushi oil field was named by the holding companies CNOOC and COOEC in relation to its location as well as a reference to Chinese culture and aspirations. == Oil wells in Wushi oil field ==