Abstract: The foamer XN with better saltresistance property is taken to correlate the foambility of the three types of foam stabilizer HXYP, YPA, PAM with better saltresistance property seprately and in pair under the conditions of 80℃ and the salility of 20.3×104 gm/L. The experimental result shows, under the condition of same toatl concentration of foamer and stablizer, the single stablizer system and the composite foam stablizer system of YPA and PAM can not produce steady foam, and the composite foam stablizer systems of HXYP, YAP and PAM are of best saltresistance property when the composite ratio is 9∶1. Optimization of the total amount of foamer and stablizer is done to the two types of composite foam stablizer systems, two types of receipts of foam systems are determined under the condition ,(1) stablizer:HXYP1800 mg/l+YAP200mg/L, foamer: 2000mg/L; (2) stablizer:HXYP1800mg/l+PAM200mg/L,foamer:XN2000mg/L. The foam quality and dispersation of the two systems are 68%, 59.7min and 67.7%, 64.1min respectively, and the property of high saltresistance is excellent.

Key words: high salinity, composite foam stabilizer, foam system, stability, oil displacement