Yitan 1 flowed at a stabilized rate of approximately 0.7 MMcfg/d following 10 days of testing in the Longmaxi Formation on 16 November 2018 with back flow of fracture fluid still underway. PetroChina is targeting for Yitan 1 to achieve flow rate of 2.5-2.8 MMcfg/d. Yitan 1 was spudded on 1 May 2017 and was drilled to a TD of 4,679.6m MD (TVD of approximately 3,500m) with a 1,000m horizontal section on 10 March 2018. Yitan 1 encountered five shale gas zone measuring a total of 33.1m. Yitan 1 is the first successful shale gas well to flow gas in the PetroChina operated Jingmen Block in the Jianghan Basin. Yitan 1 is geographically located in Hubei Province, Maopingchang Town, Bajiao Village. 
Yitan 1 flowed at a stabilized rate of approximately 0.7 MMcfg/d following 10 days of testing in the Longmaxi Formation with back flow of fracture fluid still underway. PetroChina is targeting for Yitan 1 to achieve flow rate of 2.5-2.8 MMcfg/d