Block Shen 84 is an oil gas accumulation fault block in Shasan formation located in the middle of Jing an bao oil gas pay zone and north area of Shen 84 An 12 anticline.

• 沈84块是指静安堡复式油气聚集带中段、沈84-安12断裂背斜构造北部的沙三油气富集断块。