Study On The Temperature-Resistant And Salt-Resistant Cross Linked Polymer Flooding

The second and third class of high temperature and high salt reservoir are 67.4 percent of total reservoir volume. However, the water flooding recovery was very low for the high temperature and high salt characteristic. The conventional polymer flooding method was not suit for this reservoir. As the oilfield development comes into later stage, the study of flooding system on this reservoir was necessary. The Cross Linked Polymer Flooding method was developed on the study and the application of polymer flooding. This method has become one of the enhanced oil recovery methods and improvement water flooding effective actions.Xin 50 block oilfield is a typical high temperature and high salt reservoir. In the major layer, S28, the temperature is 85oC and the total salinity is 50996.6mg/L. The Temperature-Resistant and Salt-Resistant Cross Linked Polymer flooding Pilot experiment , on Xin50 block oilfield ,results to displacement system suit to this block . It will serve as an instruction for efficient development of high temperature and high salt Reservoir in shengli oilfield .The paper mainly studys the characters and influencing factors of Cross Linked Polymer Flooding system .Its performance and applicability are also evaluated. Meanwhile ,based on the reservoir resecharacteristic and property of Xin50 block oilfield , Numerical Simulation of Cross Linked Polymer Flooding system is investigated. By the method of experiment, ploymer dry powder which is compatible is selected and injection flow and parameters are optimizd. The result is applied in the Xin50 block oilf?? Reservoir Flooding by cross linked Polymer ,achieving a favorable effect .It provides technical support for efficient development of high temperature and high salt reservoir.