"Sichuan-Chongqing Shale Gas"

"Z203H2-1 Well 139.7mm Casing Cementing: Well depth of 7318m, setting a record for the longest single-section casing cementing in Chinese shale gas wells. The horizontal section is 2852m long, establishing a record for the longest cemented horizontal section in deep shale gas wells. The downhole temperature is 123°C, with a slurry column structure of 2.10 g/cm³ high density + 1.90g/cm³ conventional density. Cement slurry returns to the surface, achieving a high-quality cementing rate of 86.5%."