China Petroleum & Chemical Corporation has announced that the Dongye Deep 2 key shale gas prospecting well developed by Sinopec Exploration Company in Dongxi, Chongqing, with a buried depth of 4,300 meters, has been tested to produce 412,000 cubic meters of high-quality shale gas daily. At a depth of more than 4,000 metres, the achievement marks significant progress in ultradeep shale gas exploration in China. It will increase Sinopec's shale gas production capacity in Southeast Sichuan by over 2 trillion cubic meters. The tested daily shale gas production of 412,000 cubic meters can provide fuel for 820,000 households based on a family of three's 0.5 cubic meter daily gas consumption. Following the breakthrough of the Fuling shale gas field in 2012, Sinopec has been expanding its expertise in deep shale gas. In 2018, Sinopec discovered and commercialized the Weirong shale gas field at a depth of 3,800 meters. To develop the Dongye Deep 2 Well, Sinopec Exploration Company put together a deep shale gas research and innovation team to conduct technical analysis, including target evaluation and developing deep shale gas volumetric fracturing technology to achieve a high-quality shale gas drilling rate of 100 percent. To reduce costs, all of Sinopec's equipment, tools, and materials were manufactured in China.