Adaptability Evaluation Of Several Typical Profile Control Agent In SZ36-1 Oilfield

This paper is aimed at the problems of large effect difference in the application of profile control technology in bohai oilfield,taking the SZ36-1 oilfield as an example,using method of indoor experiment,based on the rheology,injectability,mobility,sealing and oil displacement efficiency of profile control agent,evaluated the adaptability of AP-P4 solution,AP-P4 gel and PPG and AP-P4 composite system in the target field.Experimental results show,under the experimental conditions,three kinds of profile control agent have good rheological properties,among them,AP-P4 gel has the best adhesion property,PPG can significantly increase the viscoelasticity of PPG and AP-P4 composite system;With polymer concentration,the three kinds of profile control agent have good injectability in porous media,The injectability of AP-P4 solution is better than that of AP-P4 gel and PPG and AP-P4 composite system;In mobility performance,the AP-P4 solution,PPG and AP-P4 composite system,AP-P4 gel were established a certain pressure gradient in the range of 40 cm,30cm,20 cm,respectively at the receiving end;On the sealing property,the AP-P4 gel was the best,PPG and AP-P4 composite system was the second,and the AP-P4 solution was the relative poor;On the oil displacement effect,on the basis of water flooding,the oil displacement efficiency of AP-P4 solution,AP-P4 gel and PPG and AP-P4 composite system was14.7%,17.4%,and 19.5%,respectively.Based on the above indexes,PPG and AP-P4 composite system is the ideal profile control agent.