Abstract:
Aiming at Qian 43 formation characteristics of Jianghan oil region such as low permeability , high temperature and high salinity , expanded profile control agent JCYJ-1 of heat resistance and salt tolerance and delayed cross linking profile control agent JCDC-1 of good injection performance have been developed. Meanwhile , according to the formation characteristics of fracture development and serious water flood fingering , the composite profile control technology has been studied , which solved the fracture water breakthrough and plane heterogeneity caused by pore water channeling problem.Field test indicates good application results. Therefore , a set of stable profile production technology suitable for low permeability reservoirs with high temperature , high salt and high water cut in Jianghan oil region of have been formed.