Improvement of fracture sand control of loose sandstone in offshore oilfields

The angle of wells in Guantao Formation in Chengdao Oilfield is very high, and the reservoir is seriously depleted, so it's very easy to cause sand plug and other problems when do facture treatment. Judging the depletion degree and facture growth through sea water pretreatment and step drawdown test, use proppant to do slug, adjust treatment parameters and improve packing tools to avoid sand plug.