【摘要】 针对某油田复合泡沫驱用起泡剂的性能评价,采用气流法对复合泡沫体系驱油用起泡剂的起泡性、稳泡性及其影响因素进行研究。静态试验结果表明:起泡剂浓度、地层水矿化度、气液比等因素对体系性能具有重要影响。通过对比试验发现,阴离子型起泡剂的起泡性能和稳泡性能最优,其中QP-2在不同的气液比和地层水矿化度条件下都具有较好的起泡性能和稳泡性能,并且其最佳使用浓度为0.5%,在不同气液比情况下随矿化度的增加,起泡剂的综合性能逐渐降低,但影响不大,随气液比的增大,起泡剂的起泡性和稳泡性也随之增加。更多还原

【Abstract】 Aiming at the performance evaluation of foaming agent for composite foam flooding in a certain reservoir,by using the method of gas flowing,the foamability,stability and influencing factors of foaming agent for composite foam flooding were studied. Static experiment results show that the concentration of foaming agent,formation water salinity,gas liquid ratio and other factors have a significant impact on system performance. By contrasting tests,we find that the anionic the agent has optimal foamability and stability,in which QP-2 has good foaming properties and foam stability performance in different liquid ratio and formation water salinity conditions,and the best concentration was 0. 5%. Under the condition of different gas,with the increasement of salinity,the comprehensive performance of foaming agent will reduce gradually,but the impact is not obvious. With the increase of gas-liquid ratio,the foamability and stability of foaming agent are also increased.更多还原