Project Introduction：
Dagang Chenghai Oilfield is located in the east sea area of Zhangjuhe Village, Nanpaihe Town, Huanghua City, Hebei Province. It is about 5.0km northeast of Chenghai 2-2 Island in Tanhai New Area, with an average water depth of 4.8-6.4m. 2 submarine cables shall be laid from the entry point of Chenghai 2-2 Artificial Island to CH1-1P, specifications: 35kV, 3Cx150mm2+24C, the single loop length is about 17.5km.
KP3.8- KP0.88 post- trenching(2.92 km in shallow water area), KP7- KP3.8 post-trenching(6.4 km in deep water area) crossing over point treatment and concrete block installation(36pcs), backfilling with excavated material(53,280 m3) and cement sandbag(454 m3) backfilling in nearshore section.
