Tongtan 1 was drilled to a TD of 5,086m MD on 30 January 2019 and was suspended for further evaluations in mid-February 2019. The gas exploration well was spudded in September 2018 to drill to a PTD of 5,040m and was targeting the primary objectives of the Cambrian Longwangmiao and Maokou formations and secondary objectives of the Xixiangchi and Xixia formations. Tongtan 1 is in the PetroChina operated Liangxian-Hechuan Block in the Sichuan Basin and is geographically located in Chongqing City, Hechuan County, Sanmiao Town, Fusi Village. 
Tongtan 1 was drilled to a TD of 5,086m MD on 30 January 2019 and was suspended for further evaluations in mid-February 2019. The gas exploration well was spudded in September 2018 to drill to a PTD of 5,040m and was targeting the primary objectives of the Cambrian Longwangmiao and Maokou formations and secondary objectives of the Xixiangchi and Xixia formations. Tongtan 1 is in the PetroChina operated Liangxian-Hechuan Block in the Sichuan Basin and is geographically located in Chongqing City, Hechuan County, Sanmiao Town, Fusi Village. 